ORCID Profile
0000-0003-0455-3254
Current Organisation
Iran University of Science and Technology
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Publisher: Elsevier BV
Date: 2012
Publisher: Elsevier BV
Date: 03-2008
Publisher: Springer Science and Business Media LLC
Date: 23-11-2015
Publisher: Informa UK Limited
Date: 10-2012
Publisher: Hindawi Limited
Date: 2013
DOI: 10.1155/2013/509023
Abstract: In this work, the nanostructured anatase mesoporous membranes were prepared for water ultrafiltration (UF) process with photocatalytic and physical separation capabilities. A macroporous substrate was synthesized from α -Al 2 O 3 , then a colloidal titania sol was used for the preparation of the intermediate layer. Also, the membrane top layer was synthesized by deposition and calcination of titania polymeric sol on the intermediate layer. The characterization was performed by DLS, TG-DTA, XRD, BET, FESEM, TEM, and AFM techniques. Also, the filtration experiments were carried out based on separation of methyl orange from aqueous solution by a membrane setup with a dead-end filtration cell. Photocatalytic activity of the membranes was evaluated by methyl orange photodegradation using UV-visible spectrophotometer. The mean particle size of the colloidal and polymeric sols was 14 and 1.5 nm, respectively. The anatase membranes exhibited homogeneity, with the surface area of 32.8 m 2 /g, the mean pore size of 8.17 nm, and the crystallite size of 9.6 nm. The methyl orange removal efficiency by the mesoporous membrane based on physical separation was determined to be 52% that was improved up to 83% by a coupling photocatalytic technique. Thus, the UF membrane showed a high potential due to its multifunctional capability for water purification applications.
Publisher: Elsevier BV
Date: 12-2023
Publisher: Elsevier BV
Date: 2010
Publisher: Elsevier BV
Date: 05-2016
Publisher: Springer Science and Business Media LLC
Date: 03-12-2014
Publisher: Elsevier BV
Date: 08-2021
Publisher: American Chemical Society (ACS)
Date: 31-03-2017
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 09-2012
Publisher: Avestia Publishing
Date: 04-2016
Publisher: Elsevier BV
Date: 11-2016
Publisher: Elsevier BV
Date: 08-2009
Publisher: Informa UK Limited
Date: 25-02-2009
Publisher: Elsevier BV
Date: 08-2015
Publisher: Informa UK Limited
Date: 12-12-2018
Publisher: Elsevier BV
Date: 08-2015
Publisher: American Chemical Society (ACS)
Date: 16-09-2009
DOI: 10.1021/JE9001762
Publisher: Elsevier BV
Date: 05-2010
Publisher: Elsevier BV
Date: 08-2004
Publisher: Elsevier BV
Date: 02-2013
Publisher: Elsevier BV
Date: 06-2018
Publisher: Elsevier BV
Date: 06-2022
Publisher: Wiley
Date: 19-03-2021
DOI: 10.1002/APP.50749
Publisher: Elsevier BV
Date: 05-2021
Publisher: Informa UK Limited
Date: 2010
Publisher: Elsevier BV
Date: 10-2013
Publisher: Elsevier BV
Date: 05-2013
Publisher: Elsevier BV
Date: 03-2008
Publisher: Elsevier BV
Date: 04-2020
Publisher: Elsevier
Date: 2019
Publisher: American Chemical Society (ACS)
Date: 03-02-2023
Publisher: Elsevier BV
Date: 11-2018
Publisher: Wiley
Date: 19-04-2017
DOI: 10.1002/APP.45158
Publisher: Springer Science and Business Media LLC
Date: 16-08-2017
Publisher: Elsevier
Date: 2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA13609A
Abstract: A facile strategy for the synthesis of binary fumed silica–POSS nanofillers based nanocomposite membranes was developed.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7RA03566G
Abstract: Herein response surface methodology (RSM) is employed to optimize the fabrication of polyethersulfone (PES) nanofiltration (NF) membranes via phase inversion.
Publisher: Wiley
Date: 14-11-2018
DOI: 10.1002/PEN.25009
Publisher: Informa UK Limited
Date: 02-12-2014
Publisher: Springer Science and Business Media LLC
Date: 04-09-2019
Publisher: Elsevier BV
Date: 06-2005
Publisher: Elsevier BV
Date: 11-2009
Publisher: Elsevier BV
Date: 07-2009
Publisher: Informa UK Limited
Date: 06-2012
Publisher: American Chemical Society (ACS)
Date: 31-07-2014
DOI: 10.1021/IE501929M
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 2012
Publisher: Informa UK Limited
Date: 2012
Publisher: Wiley
Date: 06-03-2017
Publisher: Elsevier BV
Date: 08-2019
Publisher: Informa UK Limited
Date: 12-09-2014
Publisher: Elsevier BV
Date: 03-2008
Publisher: Elsevier BV
Date: 11-2008
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA12266C
Abstract: Membrane pore blockage is a great concern during membrane processes in oily water treatment.
Publisher: Elsevier BV
Date: 10-2019
Publisher: Elsevier BV
Date: 02-2017
Publisher: Wiley
Date: 15-04-2011
DOI: 10.1002/PAT.1551
Publisher: Elsevier BV
Date: 09-2010
Publisher: Springer Science and Business Media LLC
Date: 2014
DOI: 10.2478/S11696-013-0506-6
Abstract: The separation of Cd(II) and Ni(II) ions was studied in an aqueous sulphate medium using supported liquid membrane (SLM). D2EHPA/M2EHPA was used as a mobile carrier, microporous hydrophobic PTFE film was used as a solid support for the liquid membrane, and the strip phase was sulphuric acid. The effects of different parameters such as feed concentration, carrier concentration, feed phase pH, and strip phase pH on the separation factor and flux of Cd(II) and Ni(II) ions were studied. The optimum values obtained to achieve the maximum flux were 5.0 for feed pH, 40 vol. % for D2EHPA/M2EHPA concentration in the membrane phase, 0.5 for strip pH, and 0.012 mass % for feed concentration. Under these optimum conditions, the flux values of Cd(II) and Ni(II) were 15.7 × 10−7 kg m−2 s−1 and 2.6 × 10−7 kg m−2 s−1, respectively. The separation factors of Cd(II) over Ni(II) were studied under different experimental conditions. At a carrier concentration of 10 vol. % and feed concentration of 0.012 mass %, the maximum value of 185.1 was obtained for the separation factor of Cd(II) over Ni(II). After 24 h, the percentages of the extracted Cd(II) and Ni(II) were 83.3 % and 0.45 %, respectively.
Publisher: Periodica Polytechnica Budapest University of Technology and Economics
Date: 22-11-2017
DOI: 10.3311/PPCH.11459
Abstract: Submerged ceramic membrane bioreactors (SCMBRs) are more efficient combinations of traditional activated hazardous sludge and new membrane separation processes in wastewater treatment. Suspended solids are separated from hazardous effluent using microfilter ceramic membranes in SCMBRs. A high loaded wastewater was treated using an SCMBR employing a homemade tubular ceramic membrane in laboratory scale. Hydraulic Retention Time (HRT) was 32 h and COD range was varied from 2000 to 5000 mg/l. COD removal was evaluated to be more than 90% after a week and the lab scale SCMBR showed desired performance for the wastewater treatment. Mixed Liquor Suspended Solid (MLSS) was increased from 2000 to 4000 mg/L during the SCMBR operation time.
Publisher: Informa UK Limited
Date: 26-11-2014
Publisher: Wiley
Date: 10-2007
Publisher: Wiley
Date: 19-08-2011
DOI: 10.1002/APP.32862
Publisher: Elsevier BV
Date: 2015
Publisher: Informa UK Limited
Date: 08-05-2015
Publisher: Elsevier BV
Date: 2013
Publisher: Elsevier BV
Date: 12-2022
Publisher: Elsevier BV
Date: 03-2013
Publisher: Springer Science and Business Media LLC
Date: 12-02-2013
Publisher: Springer Science and Business Media LLC
Date: 04-04-2015
Publisher: Springer Science and Business Media LLC
Date: 07-2018
Publisher: Informa UK Limited
Date: 06-08-2016
Publisher: Informa UK Limited
Date: 03-12-2015
Publisher: Springer Science and Business Media LLC
Date: 17-11-2017
Publisher: Elsevier BV
Date: 07-2019
Publisher: Elsevier BV
Date: 10-1997
Publisher: Elsevier BV
Date: 03-2015
Publisher: Springer International Publishing
Date: 2017
Publisher: Desalination Publications
Date: 2019
Publisher: Elsevier BV
Date: 11-2012
Publisher: Elsevier BV
Date: 10-2016
Publisher: Wiley
Date: 25-11-2008
DOI: 10.1002/APP.29354
Publisher: Elsevier BV
Date: 10-2009
Publisher: Elsevier BV
Date: 10-2011
Publisher: Informa UK Limited
Date: 03-06-2014
Publisher: Springer Science and Business Media LLC
Date: 2021
Publisher: Elsevier BV
Date: 12-2009
Publisher: Wiley
Date: 08-01-2014
Publisher: Elsevier BV
Date: 09-2017
Publisher: Informa UK Limited
Date: 05-03-2010
Publisher: Springer Science and Business Media LLC
Date: 2015
DOI: 10.1515/CHEMPAP-2015-0097
Abstract: Methylene blue (MB) removal using eco-friendly, cost-effective, and freely available Urtica was investigated. The morphology of the adsorbent surface and the nature of the possible Urtica and MB interactions were examined using SEM analysis and the FTIR technique, respectively. Various factors affecting MB adsorption such as adsorption time, initial MB concentration, temperature, and solution pH were investigated. The adsorption process was analysed using different kinetic models and isotherms. The results showed that the MB adsorption kinetic follows a pseudo-second-order kinetic model and the isotherm data fit the Langmuir isotherm well. Thermodynamic parameters, such as ΔG°, ΔH°, and ΔS°, were also evaluated, and the results indicated that the adsorption process is endothermic and spontaneous in nature. The MB adsorption capacity of Urtica was found to be as high as 101.01 mg g
Publisher: Informa UK Limited
Date: 02-2012
Publisher: American Chemical Society (ACS)
Date: 04-08-2023
Publisher: Informa UK Limited
Date: 22-09-2014
Publisher: Elsevier BV
Date: 06-2023
Publisher: Elsevier BV
Date: 11-2019
Publisher: Croatian Society of Chemical Engineers/HDKI
Date: 07-07-2017
Publisher: Springer Science and Business Media LLC
Date: 06-2011
Publisher: IWA Publishing
Date: 04-2011
DOI: 10.2166/WST.2011.383
Abstract: In this research, results of an experimental investigation on separation of oil from a real oily wastewater using an ultrafiltration (UF) polymeric membrane are presented. In order to enhance the performance of UF in API separator effluent treatment and to get more permeation flux (PF), effects of operating factors on the yield of PF were studied. Five factors at four levels were investigated: trans-membrane pressure (TMP), temperature (T), cross flow velocity (CFV), pH and salt concentration (SC). Taguchi method (L16 orthogonal array (OA)) was used. Analysis of variance (ANOVA) was applied to calculate sum of square, variance, error variance and contribution percentage of each factor on response. The optimal levels thus determined for the four influential factors were: TMP, 3 bar T, 40˚C CFV, 1.0 m/s SC, 25 g/L and pH, 8. The results showed that CFV and SC are the most and the least effective factors on PF, respectively. Increasing CFV, TMP, T and pH caused the better performance of UF membrane process due to enhancement of driving force and fouling residence. Also, effects of oil concentration (OC) in the wastewater on PF and total organic carbon (TOC) rejection were investigated. Finally, the highest TOC rejection was found to be 85%.
Publisher: Elsevier BV
Date: 12-2007
Publisher: Elsevier BV
Date: 2007
Publisher: Elsevier BV
Date: 02-2018
Publisher: Elsevier BV
Date: 06-2020
Publisher: Elsevier BV
Date: 04-2016
Publisher: Elsevier BV
Date: 09-2010
Publisher: Informa UK Limited
Date: 17-02-2016
Publisher: Elsevier BV
Date: 11-2010
Publisher: Elsevier BV
Date: 12-2019
Publisher: Elsevier BV
Date: 02-2011
Publisher: Elsevier BV
Date: 11-2012
Publisher: Elsevier BV
Date: 04-2013
Publisher: Elsevier BV
Date: 10-2011
Publisher: Wiley
Date: 08-2014
Abstract: Mitochondrial biogenesis in skeletal muscle results from the cumulative effect of transient increases in mRNA transcripts encoding mitochondrial proteins in response to repeated exercise sessions. This process requires the coordinated expression of both nuclear and mitochondrial (mt) DNA genomes and is regulated, for the most part, by the peroxisome proliferator-activated receptor γ coactivator 1α. Several other exercise-inducible proteins also play important roles in promoting an endurance phenotype, including AMP-activated protein kinase, p38 mitogen-activated protein kinase and tumour suppressor protein p53. Commencing endurance-based exercise with low muscle glycogen availability results in greater activation of many of these signalling proteins compared with when the same exercise is undertaken with normal glycogen concentration, suggesting that nutrient availability is a potent signal that can modulate the acute cellular responses to a single bout of exercise. When exercise sessions are repeated in the face of low glycogen availability (i.e. chronic training), the phenotypic adaptations resulting from such interventions are also augmented.
Publisher: Elsevier BV
Date: 07-2020
Publisher: Mark Allen Group
Date: 11-2006
Publisher: Springer Science and Business Media LLC
Date: 2013
DOI: 10.2478/S11696-013-0374-0
Abstract: An experimental study on the pertraction of methylene blue (MB) through a supported liquid membrane (SLM) using a mixture of mono-(2-etylhexyl) ester of phosphoric acid (M2EHPA) and bis-(2-etylhexyl) ester of phosphoric acid (D2EHPA) and sesame oil as the liquid membrane (LM) was performed. Parameters affecting the pertraction of MB such as initial MB concentration, carrier concentration, feed phase pH, and stripping phase concentration were analyzed. Optimal experimental conditions for MB pertraction (permeability of 5.63 × 10−6) were obtained after a 7 h separation with the MB concentration in the feed phase of 80 mg L−1, D2EHPA/M2EHPA concentration in membrane phase of 40 vol. %, feed pH of 6, and acetic acid concentration in the stripping phase of 0.4 mol L−1. Kinetics of transport and stability of the SLM system were also studied and the mass transfer coefficient for this system was evaluated. Scanning electron microscopy (SEM) was used to morphologically characterize the membrane surface.
Publisher: Wiley
Date: 03-2008
Publisher: Springer Science and Business Media LLC
Date: 09-07-2018
Publisher: Elsevier BV
Date: 12-2009
Publisher: Informa UK Limited
Date: 13-04-2014
Publisher: MDPI AG
Date: 04-11-2022
DOI: 10.3390/SU142114527
Abstract: The management of global carbon dioxide (CO2) emissions is considered one of the main environmental problems facing the modern world. One of the potential techniques for CO2 capture is absorption, using membrane contactor modules. Most of the previous research that dealt with membrane contactor simulations considered the whole membrane surface as the active reaction surface. However, in this paper, a more realistic model of the membrane-contactor module is presented, taking into account the effects of the pore size and surface porosity. CO2 absorption into the monoethanolamine (MEA) solution in hollow fiber membrane-contactor modules was numerically investigated. A computational fluid dynamics simulation was established using essential basic fluid dynamics and mass transfer equations in reactive mode. An algorithmic function was used to present the relations between the CO2 absorption flux and the hollow fiber length, membrane surface pore size, and porosity. The simulation results were compared to previously obtained experimental results without using any fitting parameters, and a good agreement was found with an average error of 8.5%. The validated simulation was then used to predict the effects of the MEA inlet velocity and concentration, the membrane surface pore size, and porosity on the total CO2 absorption flux. A maximum absorption flux of about 1.8 mol/m2·s was achieved at an MEA concentration of 4 M with a pore size of 0.2 microns, a surface porosity of 1%, and an inlet velocity of 0.25 m/s. The extrapolation technique was then used to predict the values of the absorption flux at longer fiber lengths. The concentration profiles around the pores at the gas–liquid contact surface of the membrane were obtained and presented. The proposed model exhibited excellent potential to evaluate the effective reaction surface in hollow fiber membrane contactors. This model could be considered the first step to obtaining accurate predictions of the membrane contactor gas absorption performance based on its surface structure.
Publisher: Wiley
Date: 03-11-2012
DOI: 10.1002/APP.35313
Publisher: Elsevier
Date: 2020
Publisher: Elsevier BV
Date: 11-2009
Publisher: Wiley
Date: 06-04-2020
Publisher: Elsevier BV
Date: 03-2021
Publisher: Elsevier BV
Date: 10-2020
Publisher: Elsevier BV
Date: 2011
Publisher: Wiley
Date: 04-08-2021
DOI: 10.1002/APP.49718
Publisher: Wiley
Date: 11-2006
Publisher: Elsevier BV
Date: 08-2016
Publisher: Informa UK Limited
Date: 29-07-2015
Publisher: Elsevier BV
Date: 06-2020
Publisher: Elsevier BV
Date: 03-2009
Publisher: Elsevier BV
Date: 11-2016
Publisher: Wiley
Date: 17-02-2012
DOI: 10.1002/PAT.1888
Publisher: Wiley
Date: 06-02-2013
Publisher: Wiley
Date: 03-01-2015
DOI: 10.1002/ADV.21494
Publisher: Elsevier BV
Date: 08-2011
Publisher: Wiley
Date: 14-01-2010
DOI: 10.1002/APP.31645
Publisher: Elsevier BV
Date: 07-2013
Publisher: Elsevier BV
Date: 05-2014
Publisher: Elsevier BV
Date: 08-2022
Publisher: Elsevier BV
Date: 08-2010
Publisher: Elsevier BV
Date: 03-2008
Publisher: Walter de Gruyter GmbH
Date: 06-2009
Publisher: Elsevier BV
Date: 11-2005
Publisher: Elsevier BV
Date: 10-2002
Publisher: Elsevier BV
Date: 2011
DOI: 10.1016/J.JHAZMAT.2010.09.008
Abstract: Removal of some alent heavy metal ions (Cu(2+), Zn(2+), Pb(2+), Cd(2+), Co(2+)) from aqueous solutions using carbon nanotube (CNT) sheets was performed. CNT sheets were synthesized by chemical vapor deposition of cyclohexanol and ferrocene in nitrogen atmosphere at 750°C, and oxidized with concentrated nitric acid at room temperature and then employed as adsorbent for water treatment. Langmuir and Freundlich isotherms were used to describe the adsorption behavior of heavy metal ions by oxidized CNT sheets. The obtained results demonstrated that the oxidized CNT sheets can be used as an effective adsorbent for heavy metal ions removal from water. It was found out that kinetics of adsorption varies with initial concentration of heavy metal ions. Preference of adsorption onto the oxidized CNT sheets can be ordered as Pb(2+)>Cd(2+)>Co(2+)>Zn(2+)>Cu(2+). Using the oxidized CNT sheets, waste water treatment without CNT leakage into water is economically feasible. Therefore, CNT sheets have good potential application in environmental protection.
Publisher: Wiley
Date: 30-03-2010
DOI: 10.1002/APP.31180
Publisher: Elsevier BV
Date: 09-2010
Publisher: Wiley
Date: 08-07-2011
Publisher: Springer Science and Business Media LLC
Date: 04-2017
Publisher: Wiley
Date: 11-2017
DOI: 10.1002/CJCE.22686
Publisher: Elsevier BV
Date: 08-2009
Publisher: Elsevier BV
Date: 11-1995
Publisher: Elsevier BV
Date: 08-2014
Publisher: Elsevier BV
Date: 12-2015
Publisher: Elsevier BV
Date: 08-2003
Publisher: Mark Allen Group
Date: 12-2006
Publisher: Springer Science and Business Media LLC
Date: 18-12-2022
Publisher: Informa UK Limited
Date: 15-06-2015
Publisher: Springer Science and Business Media LLC
Date: 22-04-2017
Publisher: Elsevier BV
Date: 2003
Publisher: Desalination Publications
Date: 2017
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier BV
Date: 09-2008
Publisher: American Chemical Society (ACS)
Date: 03-09-2008
DOI: 10.1021/IE071493K
Publisher: Springer Science and Business Media LLC
Date: 1997
Publisher: Elsevier BV
Date: 03-2012
Publisher: Elsevier BV
Date: 03-2012
Publisher: Wiley
Date: 13-12-2012
DOI: 10.1002/PEN.23410
Publisher: Elsevier BV
Date: 08-2020
Publisher: Elsevier BV
Date: 02-2018
Publisher: IWA Publishing
Date: 25-01-2022
DOI: 10.2166/WST.2022.024
Abstract: Polyacrylonitrile (PAN) adsorptive membrane incorporated with nanosize-goethite (α-FeO(OH)) hydrous metal oxide particles (GNPs), prepared with optimal flux and Cu(II) removal in the previous study, was used to evaluate the process parameter on the Cu(II) removal. Box-Behnken Design (BBD) based on the Response Surface Methodology (RSM) was employed to evaluate the impact of Cu(II) feed solution characteristics such as pH, initial concentration of metal ion, and transmembrane pressure (TMP) on copper removal efficiency. The outcomes indicated that the RSM optimization technique could be utilized as an applicable method to find the optimum condition for the maximum Cu(II) removal with slight variance compared with the experimentally measured data. The effect of each process parameter and the coupling effect of parameters on the Cu(II) removal was assessed. Finally, the optimum condition of pH, Cu(II) concentration, and transmembrane pressure (TMP) to obtain high copper removal efficiency was decided. In the optimum condition of the Cu(II) removal, the removal of lead (Pb(II)) metal ion was evaluated by the same membrane.
Publisher: Elsevier BV
Date: 08-2015
Publisher: Informa UK Limited
Date: 30-11-2009
Publisher: Elsevier BV
Date: 09-2011
Publisher: Elsevier BV
Date: 09-2018
Publisher: Wiley
Date: 10-12-2012
DOI: 10.1002/PEN.23406
Publisher: Elsevier BV
Date: 09-2001
Publisher: Elsevier BV
Date: 07-2009
Publisher: Elsevier BV
Date: 06-2015
Publisher: Informa UK Limited
Date: 25-09-2014
Publisher: Elsevier BV
Date: 07-2008
Publisher: Wiley
Date: 23-03-2018
DOI: 10.1002/APP.46419
Publisher: Elsevier BV
Date: 08-2021
Publisher: Elsevier BV
Date: 12-1996
Publisher: Elsevier BV
Date: 03-2011
Publisher: Wiley
Date: 05-05-2020
DOI: 10.1002/APP.49367
Publisher: Wiley
Date: 19-07-2011
DOI: 10.1002/PAT.2022
Publisher: Elsevier BV
Date: 10-2019
Publisher: Elsevier BV
Date: 10-2020
Publisher: Elsevier BV
Date: 10-2012
Publisher: Elsevier BV
Date: 09-2014
Publisher: Springer Science and Business Media LLC
Date: 17-03-2015
Publisher: Walter de Gruyter GmbH
Date: 06-02-2018
Abstract: Mixed matrix membranes (MMMs) with superior structural and functional properties provide an interesting approach to enhance the separation properties of polymer membranes. As a matter of fact, MMMs combine the advantages of both components polymeric continuous phase and nanoparticle dispersed phase. Generally, the separation performance of polymeric membranes suffers from an upper-performance limit. Hence, the incorporation of nanoparticles helps to overcome such limitations. Block copolymers such as poly(ether-block-amide) (PEBA) composed of immiscible soft ether segments as well as hard amide segments have been shown as excellent materials for the synthesis of membranes. Consequently, PEBA membranes have been extensively used in scientific research and industrial processes. It is thus aimed to provide an overview of PEBA MMMs. This review is especially devoted to summarizing the effects of nanoparticle loading on PEBA performance and properties such as selectivity, permeability, thermal and mechanical properties, and others. In addition, the preparation techniques of PEBA MMMs and solvent selection are discussed. This article also discusses the many types of nanoparticles incorporated into PEBA membranes. Furthermore, the future direction in PEBA MMMs research for separation processes is briefly predicted.
Publisher: American Chemical Society (ACS)
Date: 06-08-2021
Publisher: Elsevier BV
Date: 12-2016
Publisher: Springer Science and Business Media LLC
Date: 2015
DOI: 10.1515/CHEMPAP-2015-0007
Abstract: The pertraction of dysprosium (Dy) through a supported liquid membrane (SLM) system consisting of PTFE (polytetrafluoroethylene) support, D2EHPA (di-2-ethylhexyl phosphoric acid) dissolved in kerosene as membrane solution, and HNO3 solution as stripping solution, was studied. The experiments were designed by the Taguchi method in order to investigate the effects of initial Dy concentration, feed phase pH, different stripping solution concentration, and D2EHPA concentration in the membrane phase on Dy pertraction. Optimal experimental conditions for Dy pertraction were obtained using an analysis of variance (ANOVA) (feed concentration: 130 mg L
Publisher: Elsevier BV
Date: 12-2013
Publisher: Elsevier BV
Date: 09-2005
Publisher: Informa UK Limited
Date: 31-12-2015
Publisher: Informa UK Limited
Date: 2013
Publisher: Elsevier BV
Date: 02-2021
Publisher: American Chemical Society (ACS)
Date: 08-02-2018
Publisher: Elsevier BV
Date: 04-2015
Publisher: Elsevier BV
Date: 11-2006
Publisher: Elsevier BV
Date: 02-2014
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier BV
Date: 03-2010
Publisher: Elsevier BV
Date: 09-2021
Publisher: Elsevier BV
Date: 11-2020
Publisher: Elsevier BV
Date: 12-2020
Publisher: Wiley
Date: 12-11-2017
DOI: 10.1002/APP.44587
Publisher: Informa UK Limited
Date: 20-10-2015
Publisher: Informa UK Limited
Date: 04-2011
Publisher: Elsevier BV
Date: 09-2018
Publisher: Springer Science and Business Media LLC
Date: 17-02-2023
Publisher: Elsevier BV
Date: 04-2011
Publisher: Informa UK Limited
Date: 07-04-2015
Publisher: Elsevier BV
Date: 11-2006
Publisher: Informa UK Limited
Date: 08-2011
Publisher: American Chemical Society (ACS)
Date: 03-12-2020
Publisher: Elsevier BV
Date: 10-2009
Publisher: Wiley
Date: 29-10-2008
DOI: 10.1002/APP.27222
Publisher: Periodica Polytechnica Budapest University of Technology and Economics
Date: 24-04-2017
DOI: 10.3311/PPCH.9789
Abstract: The present paper investigates the simulation of carbon dioxide removal from natural gas stream by a mixture of three amines of diethanolamine (DEA), methyldiethanolamine (MDEA), and 2-amino- 2-methyl-1-propanol (AMP) in a hollow fiber membrane contactor made from polypropylene using finite volume method (FVM). The effect of structural parameters of length and thickness of membrane and diameter of shell on the removal efficiency was studied and the optimized values were calculated. The calculations were made with the assumption of two-dimensional symmetric geometry and compared with those of three-dimensional one. The effect of number and size of the meshes on the simulation results was also studied. The simulation results were validated against the experimental values from the literature. The results imply that the increase in the length and decrease in the thickness of membrane enhances the removal efficiency. As a result, higher quantities of carbon dioxide are transferred from the shell to the membrane and amine solution inside the tube which decreases the effluent CO2 of shell and increases the average concentration of CO2 in the membrane and tube sides. The changes in effluent CO2 of shell with respect to amine solution concentration and influent CO2 indicate the insignificant influence of influent CO2 concentration on the removal efficiency.
Publisher: Elsevier BV
Date: 10-0010
Publisher: Wiley
Date: 15-05-2011
DOI: 10.1002/PAT.1602
Publisher: Wiley
Date: 30-11-2009
DOI: 10.1002/PEN.21603
Publisher: American Chemical Society (ACS)
Date: 27-02-2019
DOI: 10.1021/ACS.LANGMUIR.8B04234
Abstract: Amyloid-carbon hybrid membranes have exceptional performance in removing heavy metal ions from water because of the presence of multiple binding sites on the amyloid fibrils, but the binding process is still not fully understood. To understand the mechanisms of amyloid-metal ion binding, we perform adsorption isotherms on a model system given by β-lactoglobulin amyloid fibrils and four representative heavy metal ions: chromium (Cr), nickel (Ni), silver (Ag), and platinum (Pt). Furthermore, to get a comprehensive thermodynamic picture of the binding process between amino acid residues and heavy metals, we here use isothermal titration calorimetry on native β-lactoglobulin monomers and amyloid fibrils exposed to the two model metal ions, that is, silver and chromium. A conclusive thermodynamic insight on the binding process emerges by direct measurements of enthalpy and entropy changes, association binding constant, and average number of binding sites of the protein monomer and amyloid fibril. As a result of the strong amyloid binding affinity between amino acids and metal ions, when the protein is converted into amyloid fibrils and assembled into membranes, the resulting amyloid-activated carbon hybrids remove all the tested heavy metals with efficiencies beyond 99%. Importantly, the efficiency remains stable during several consecutive cycles, demonstrating a high adsorption capacity and a long lifetime and reusability of the membranes. The recovery of adsorbed precious metal ions converted into elemental metals is shown to be a general feature of these membranes, with platinum and silver successfully recovered from saturated hybrid membranes by a simple thermal reduction. The separation performance, evaluated on real electroplating industrial wastewater containing chromium and nickel, is found to exceed 99% at a permeability as high as 2.92 × 10
Publisher: Elsevier BV
Date: 02-2003
Publisher: Elsevier BV
Date: 11-2017
Publisher: Elsevier BV
Date: 05-2020
Publisher: Elsevier BV
Date: 02-2007
Publisher: Elsevier BV
Date: 2020
Publisher: Mark Allen Group
Date: 03-2008
Publisher: Elsevier BV
Date: 05-2014
Publisher: Elsevier BV
Date: 2014
Publisher: Elsevier BV
Date: 03-2016
Publisher: Elsevier BV
Date: 10-2019
Publisher: Elsevier BV
Date: 02-2021
Publisher: Springer Science and Business Media LLC
Date: 2013
DOI: 10.2478/S11696-013-0310-3
Abstract: An experimental study on the removal of Cd2+ and Zn2+ through a supported liquid membrane using a mixture of mono-(2-etylhexyl) ester of phosphoric acid (M2EHPA) and bis-(2-etylhexyl) ester of phosphoric acid (D2EHPA) as carriers is presented. Parameters affecting the Cd2+ and Zn2+ pertraction such as feed concentration, carrier concentration, pH of the stripping phase, and TBP (tributyl phosphate) concentration were analyzed using the Taguchi method. Optimal experimental conditions for Cd2+ and Zn2+ pertraction were obtained using the analysis of variance (ANOVA) after a 6 h separation with the initial feed concentration of 8.9 × 10−4 mol L−1, carrier concentration of 20 vol. %, TBP concentration of 4 vol. %, and pH of 0.5. Then, under optimum conditions, a comparison of M2EHPA, D2EHPA, and bis-(2,4,4-trimethylpentyl)monothiophosphinic acid (Cyanex 302) was performed. Effective pertraction of Cd2+ and Zn2+ using these carriers was observed in the following order: mixture of M2EHPA and D2EHPA, D2EHPA, Cyanex 302. It was also found that the presence of one metal ion in the feed solution reduces the pertraction rate of the other one.
Publisher: Elsevier BV
Date: 11-2010
Publisher: Elsevier BV
Date: 2009
Publisher: Elsevier BV
Date: 06-2019
Publisher: Wiley
Date: 10-04-2019
DOI: 10.1002/APP.47841
Publisher: Elsevier BV
Date: 09-2018
Publisher: Elsevier BV
Date: 06-1970
Publisher: Wiley
Date: 25-10-2007
DOI: 10.1002/APP.25260
Publisher: Elsevier BV
Date: 10-2017
Publisher: Springer Science and Business Media LLC
Date: 24-11-2015
Publisher: Elsevier BV
Date: 11-2016
Publisher: Elsevier BV
Date: 07-1995
Publisher: Wiley
Date: 30-03-2014
DOI: 10.1002/PEN.23555
Publisher: American Chemical Society (ACS)
Date: 12-05-2022
Publisher: Wiley
Date: 17-04-2009
DOI: 10.1002/APJ.266
Publisher: Elsevier BV
Date: 08-2020
Publisher: Elsevier BV
Date: 03-2011
Publisher: Wiley
Date: 15-12-2014
DOI: 10.1002/APP.41731
Publisher: Elsevier BV
Date: 08-2003
Publisher: Elsevier BV
Date: 03-2011
Publisher: Elsevier BV
Date: 2011
Publisher: Elsevier BV
Date: 06-2011
Publisher: Elsevier BV
Date: 04-2005
Publisher: Elsevier BV
Date: 05-2015
Publisher: Elsevier BV
Date: 02-2015
Publisher: Springer Science and Business Media LLC
Date: 09-07-2009
Publisher: Wiley
Date: 19-10-2013
DOI: 10.1002/APJ.1691
Publisher: Mark Allen Group
Date: 02-2009
Publisher: Wiley
Date: 12-07-2018
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 2019
Publisher: Elsevier BV
Date: 05-2018
DOI: 10.1016/J.JENVMAN.2018.02.071
Abstract: Cationic dyes mixture pertraction experiments of Rhodamine B (RhB) and Methylene Blue (MB) using a flat sheet supported liquid membrane (SLM) were performed. Mono-(2-etylhexyl) ester of phosphoric acid (M2EHPA) and bis-(2-etylhexyl) ester of phosphoric acid (D2EHPA) mixture was used as carrier and Sesame oil to dilute the carrier due to its very high viscosity. Acetic acid (AA) was also used as stripper phase. Influences of hydrophobic and hydrophilic nanoparticles were loaded in a carrier at different loadings (from 0 to 6 mg mL
Publisher: Elsevier BV
Date: 10-2018
Publisher: Elsevier BV
Date: 10-2013
Publisher: Elsevier BV
Date: 09-2014
Publisher: Elsevier BV
Date: 08-2004
Publisher: Elsevier BV
Date: 03-2003
Publisher: Springer Science and Business Media LLC
Date: 2014
DOI: 10.2478/S11696-014-0578-Y
Abstract: A novel ion imprinted polymeric membrane (IIPM) for copper (Cu) ions transport was prepared by a ion imprinting technique via cross-linking of blended chitosan (CS) olyvinyl alcohol (PVA) using glutaraldehyde (GA) as the cross-linker and Cu ions as the template. The obtained IIPM was characterised and evaluated by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and permeation studies. Cavities of IIPM containing recognition sites for Cu ions were formed in the compact structure of the CS/PVA membrane which was prepared via the solution casting method. Under the optimum conditions, transport factor of the IIPM reached 2 when the permeation time was 18 h. Selective permeation of Cu ions versus nickel ions through the imprinted membrane was confirmed and a selectivity factor of 1.71 was obtained.
Publisher: Elsevier BV
Date: 03-2015
Publisher: Springer Science and Business Media LLC
Date: 06-07-2017
Publisher: Elsevier BV
Date: 04-2011
Publisher: Wiley
Date: 14-11-2019
Publisher: Springer Science and Business Media LLC
Date: 2014
DOI: 10.2478/S11696-013-0509-3
Abstract: In this study, Cu(II)-ion-imprinted membrane adsorbents were prepared via cross-linking of blended chitosan oly(vinyl alcohol) using glutaraldehyde as cross-linker and copper ions as template. The ability of IIMs to adsorb copper ions from aqueous solutions was assessed using a batch of experiments under different conditions by changing cross-linking density (0.05 mass %, 0.1 mass %, and 0.2 mass %), template content (0.2 mass %, 0.5 mass %, and 0.9 mass %), initial analyte concentration (50 mg L−1, 100 mg L−1, and 150 mg L−1), and adsorbent concentration (0.5 g L−1, 1.0 g L−1, and 2.0 g L−1). The Taguchi method was used to plan a minimum number of experiments. The following optimal levels were thus determined for the four factors: cross-linking density: 0.1 mass % template content: 0.5 mass % initial analyte concentration: 150 mg L−1 and adsorbent concentration: 0.3 g L−1.
Publisher: IWA Publishing
Date: 07-2010
DOI: 10.2166/WST.2010.184
Abstract: Investigations were carried out for purification of oily wastewater by a combined of ultrafiltration/reverse osmosis (UF/RO) processes. Laboratory-scale UF using polysulfone (PS) and polyacrylonitrile (PAN) membranes were employed with typical oily wastewater collected from API unit of Tehran refinery. The PAN membrane showed higher rejection, more permeation flux and less fouling resistance than the PS membrane. Both membranes produced permeate with oil and grease contents generally less than 5 ppm. Rejection of chemical oxygen demand (COD) and biological oxygen demand (BOD5) were found to be 65% for UF treatment. In this work, Hermia's models were used to investigate the fouling mechanism involved in UF of the oily wastewater. The results showed that the best fit to experimental data corresponds to the cake layer formation model followed by the intermediate blocking model for both the UF membranes. For further treatment of the UF permeates, RO was applied using a thin film composite polyamide membrane. The rejection of COD, BOD5 and total dissolved solid (TDS) after UF/RO treatment increased up to 98%, 98% and 95%, respectively. The results showed that the final permeate has very high quality and even better than that is currently introduced to the cooling towers in Tehran refinery.
Publisher: Elsevier BV
Date: 12-2012
Publisher: Elsevier BV
Date: 10-2008
Publisher: Informa UK Limited
Date: 11-06-2014
Publisher: Elsevier BV
Date: 12-2017
Publisher: Elsevier BV
Date: 11-2006
Publisher: Informa UK Limited
Date: 12-2011
Publisher: Elsevier BV
Date: 09-2013
Publisher: Elsevier BV
Date: 02-2007
Publisher: Elsevier BV
Date: 02-2007
Publisher: Springer Science and Business Media LLC
Date: 11-02-2015
Publisher: Elsevier BV
Date: 11-2006
Publisher: Elsevier BV
Date: 11-2009
Publisher: Springer Science and Business Media LLC
Date: 22-03-2019
Publisher: Wiley
Date: 11-2008
Publisher: Informa UK Limited
Date: 18-03-2014
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier
Date: 2019
Publisher: Elsevier BV
Date: 06-2012
Publisher: Informa UK Limited
Date: 06-2009
DOI: 10.5004/DWT.2009.480
Publisher: Springer Science and Business Media LLC
Date: 12-12-2018
Publisher: Elsevier BV
Date: 04-2018
Publisher: Elsevier BV
Date: 12-2013
Publisher: Wiley
Date: 28-07-2021
DOI: 10.1002/JCTB.6521
Publisher: Elsevier BV
Date: 2011
Publisher: Elsevier BV
Date: 11-2021
Publisher: Elsevier BV
Date: 11-2005
Publisher: Mark Allen Group
Date: 03-2009
Publisher: Wiley
Date: 30-08-2010
DOI: 10.1002/PEN.21763
Publisher: Elsevier BV
Date: 03-2016
Publisher: Elsevier BV
Date: 09-2015
Publisher: Elsevier BV
Date: 09-2011
Publisher: Elsevier BV
Date: 11-2010
Publisher: Elsevier BV
Date: 08-2013
Publisher: Elsevier BV
Date: 12-2019
Publisher: Elsevier BV
Date: 05-2021
Publisher: Informa UK Limited
Date: 03-2012
Publisher: Elsevier BV
Date: 03-2011
Publisher: Elsevier BV
Date: 2006
Publisher: Informa UK Limited
Date: 13-06-2014
Publisher: Elsevier BV
Date: 2017
Publisher: American Chemical Society (ACS)
Date: 24-10-2014
DOI: 10.1021/IE503216P
Publisher: Elsevier BV
Date: 02-2007
Publisher: Elsevier BV
Date: 04-2007
Publisher: Springer Science and Business Media LLC
Date: 2016
DOI: 10.1515/CHEMPAP-2016-0027
Abstract: In this study, a novel flat-type synergic-supported liquid membrane was evaluated with a mixture of
Publisher: Elsevier BV
Date: 2005
Publisher: Elsevier BV
Date: 08-2004
Publisher: Elsevier BV
Date: 05-2004
Publisher: Elsevier BV
Date: 04-2019
Publisher: Elsevier BV
Date: 04-2019
Publisher: Elsevier
Date: 2018
Publisher: Elsevier BV
Date: 10-2017
Publisher: Wiley
Date: 12-11-2009
DOI: 10.1002/PAT.1353
Publisher: Elsevier BV
Date: 08-2012
Publisher: Informa UK Limited
Date: 03-2013
Publisher: Wiley
Date: 18-10-2016
DOI: 10.1002/APP.44531
Publisher: Elsevier BV
Date: 05-2016
Publisher: No publisher found
Date: 2015
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 09-2004
Publisher: Elsevier BV
Date: 15-07-2008
Publisher: Elsevier BV
Date: 11-2013
Publisher: Elsevier BV
Date: 11-2006
Publisher: Elsevier BV
Date: 06-2023
Publisher: Elsevier BV
Date: 07-2021
Publisher: Elsevier BV
Date: 04-2020
DOI: 10.1016/J.SCITOTENV.2019.134951
Abstract: The major problem that limits the utilization of PES membranes in treatment of oily wastewater is the drastic irreversible membrane fouling due to the attachment of oil droplets onto the membrane surface. The goal of this study was to develop a novel, fast and facile post-functionalization of polydopamine (PDA) coated membranes using pre-synthesized nanoparticles for fabrication of novel organic-inorganic hybrid recoverable membranes with high hydrophilicity and underwater oleophobicity. Here, bio-inspired technique was studied because the membrane technology could separate small oil droplets (even <10 µm) with high performance if faced little fouling phenomena during the treatment process. The amino-functionalized multi-wall carbon nanotubes (N-MWCNTs) were anchored onto the PDA coated PES membranes. The membranes characteristics, with specific focus on surface morphology and wettability were investigated. The newly developed PES/PDA/N-MWCNTs membranes showed an enhanced flux (~1086%) compared to the unmodified PES membrane. This enhancement was attributed to the high hydrophilic and underwater oleophobic properties, which were found to alleviate the effect of fouling. The total fouling ratio (R
Publisher: Springer Science and Business Media LLC
Date: 15-03-2022
Publisher: Wiley
Date: 20-10-2021
DOI: 10.1002/PAT.5140
Publisher: Elsevier BV
Date: 03-2014
Publisher: Elsevier BV
Date: 05-2019
Publisher: Elsevier BV
Date: 09-2005
Publisher: Elsevier
Date: 2019
Publisher: Elsevier BV
Date: 11-2005
Publisher: Elsevier BV
Date: 02-2010
Publisher: Wiley
Date: 08-09-2009
DOI: 10.1002/APP.30814
Publisher: IWA Publishing
Date: 08-2011
DOI: 10.2166/WST.2011.655
Abstract: In this paper, results of an experimental and modeling of separation of oil from industrial oily wastewaters (desalter unit effluent of Seraje, Ghom gas wells, Iran) with mullite ceramic membranes are presented. Mullite microfiltration symmetric membranes were synthesized from kaolin clay and α-alumina powder. The results show that the mullite ceramic membrane has a high total organic carbon and chemical oxygen demand rejection (94 and 89%, respectively), a low fouling resistance (30%) and a high final permeation flux (75 L/m2 h). Also, an artificial neural network, a predictive tool for tracking the inputs and outputs of a non-linear problem, is used to model the permeation flux decline during microfiltration of oily wastewater. The aim was to predict the permeation flux as a function of feed temperature, trans-membrane pressure, cross-flow velocity, oil concentration and filtration time, using a feed-forward neural network. Finally the structure of hidden layers and nodes in each layer with minimum error were reported leading to a 4–15 structure which demonstrated good agreement with the experimental measurements with an average error of less than 2%.
Publisher: Elsevier BV
Date: 1995
Publisher: Springer International Publishing
Date: 09-2021
Publisher: Elsevier BV
Date: 05-2017
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 08-2013
Publisher: Springer Science and Business Media LLC
Date: 03-01-2021
Publisher: Elsevier BV
Date: 2013
Publisher: Elsevier BV
Date: 09-2021
Publisher: Informa UK Limited
Date: 04-2011
Publisher: Informa UK Limited
Date: 31-05-2013
Publisher: IOP Publishing
Date: 03-2020
Abstract: The Plackett—Burman method was used to identify and rank most affective parameters on hydrothermal synthesis and properties of the 13X zeolite powder with gel composition of Al 2 O 3 :aSiO 2 :bNa 2 O:cH 2 O. The affective parameters of SiO 2 /Al 2 O 3 ratio, synthesis mixture alkalinity, synthesis temperature, and water content were selected for further study of their impacts and gel composition optimization using the Taguchi method. The synthesized powders were characterized by XRD and SEM analysis. Synthesis temperature and mixture alkalinity were found as the most affecting parameters on the 13X zeolite synthesis at the best gel composition of Al 2 O 3 :5.4SiO 2 : 13Na 2 O: 840H 2 O. Then 13X zeolite membranes were synthesized on the seeded supports using the optimum gel composition and impacts of synthesis temperature and time and coating layer number on their H 2 and CO 2 permeances and ideal H 2 /CO 2 selectivity were studied. The optimum 13X zeolite membrane for H 2 /CO 2 separation was obtained by three layer coatings at 80 °C for 16 h with H 2 permeance of 2.88 cm 3 cm −2 .Pa.s and ideal H 2 /CO 2 selectivity of 4.72.
Location: Iran (Islamic Republic of)
No related grants have been discovered for Toraj Mohammadi.