ORCID Profile
0000-0001-8886-5540
Current Organisation
Murdoch University
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Publisher: Wiley
Date: 03-05-2018
DOI: 10.1002/JCTB.5642
Publisher: Elsevier BV
Date: 07-2018
Publisher: Wiley
Date: 03-2020
Publisher: Elsevier BV
Date: 2021
Publisher: Springer Singapore
Date: 2020
Publisher: Springer Science and Business Media LLC
Date: 13-02-2019
Publisher: Elsevier BV
Date: 08-2019
Publisher: Wiley
Date: 28-12-2016
Abstract: Microalgae growth in closed photobioreactors is greatly inhibited by elevated temperatures caused mainly by the infra-red portion of light. Current passive evaporative cooling systems for temperature control in outdoor photobioreactors are neither economical nor sustainable. Here we built a novel flat plate photobioreactor with its illumination surface customized with insulated glazing units (IGP). The IGP design enabled transmission of more than 50% of visible light while blocking 90% of ultraviolet and infrared radiations. The growth and productivity of Nannochloropsis sp. (MUR 267) in the IGP was compared against conventional flat plate photobioreactors subjected to the full spectrum (HLP) and also externally modified spectrum (CLP) of halogen lights. High temperature (up to 42°C) resulted in no growth in the HLP. Biomass productivities of Nannochloropsis sp. grown in the CLP was significantly higher than the IGP due to higher light transmission and lower temperature profiles recorded in the CLP. Lipid content of Nannochloropsis was highest in the CLP (60.23%) while protein was highest in the IGP (42.43%). All photosynthesis parameters were negatively affected in the HLP. The IGP's ability to remove infrared (heat) makes this newly developed photobioreactor a promising and sustainable cultivation system for mass algal production especially for high value products.
Publisher: Elsevier BV
Date: 03-2015
Publisher: Elsevier BV
Date: 04-2021
Publisher: Elsevier BV
Date: 05-2020
Publisher: Elsevier BV
Date: 11-2018
Publisher: Elsevier BV
Date: 10-2021
Publisher: Elsevier BV
Date: 12-2021
Publisher: Elsevier BV
Date: 07-2020
Publisher: Elsevier BV
Date: 02-2022
Publisher: Springer Science and Business Media LLC
Date: 10-02-2017
Publisher: Elsevier BV
Date: 11-2021
Publisher: Elsevier BV
Date: 12-2022
DOI: 10.1016/J.SCITOTENV.2022.158203
Abstract: Sulfur (S) is a crucial component in the environment and living organisms. This work is the first attempt to provide an overview and critical discussion on the roles, mechanisms, and environmental applications of sulfur-oxidizing bacteria (SOB). The findings reveal that key enzymes of SOB embarked on oxidation of sulfide, sulfite, thiosulfate, and elemental S. Conversion of reduced S compounds was oxidatively catalyzed by various enzymes (e.g. sulfide: quinone oxidoreductase, flavocytochrome c-sulfide dehydrogenase, dissimilatory sulfite reductase, heterodisulfide reductase-like proteins). Environmental applications of SOB discussed include detoxifying hydrogen sulfide, soil bioremediation, and wastewater treatment. SOB producing S
Publisher: Springer Science and Business Media LLC
Date: 31-05-2019
Publisher: Elsevier BV
Date: 05-2019
Publisher: Springer Science and Business Media LLC
Date: 25-09-2014
Publisher: Elsevier BV
Date: 06-2023
Publisher: Elsevier BV
Date: 08-2023
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 06-2021
Publisher: Elsevier BV
Date: 02-2022
Publisher: Elsevier BV
Date: 11-2016
Publisher: Elsevier BV
Date: 03-2023
Publisher: Elsevier BV
Date: 12-2022
DOI: 10.1016/J.JENVMAN.2022.116322
Abstract: Sufficient and reliable long-term field data on the growth, productivity and nutrient removal rates of microalgal based wastewater treatment system is essential to validate its overall techno-economic feasibility. Here, we investigated the semi-continuous microalgal cultivation of Scenedesmus sp. in anaerobically digested abattoir effluent (ADAE) for 13 months in outdoor raceway ponds operated at 20 cm depth. This study was initiated with three different cultures consisting of 1) monocultures of Chlorella sp., 2) Scenedesmus sp., and 3) an equal mixed concentration of both microalgae species. However, after 15 weeks, Scenedesmus sp. was found to be the most dominant microalgae species in all the different cultures, even completely taking over the Chlorella sp. monoculture. Over the course of summer and early autumn, the average weekly biomass productivity of Scenedesmus sp. cultures was 12.5 ± 0.6 g m
Publisher: Elsevier
Date: 2022
Publisher: CRC Press
Date: 05-09-2019
Publisher: Elsevier BV
Date: 08-2019
DOI: 10.1016/J.JES.2019.03.003
Abstract: Algal phytoremediation represents a practical green solution for treating anaerobically digested piggery effluent (ADPE). The potential and viability of combining microalgae and macroalgae cultivation for the efficient treatment of ADPE were evaluated in this study. Bioprospecting the ability of different locally isolated macroalgae species illustrated the potential of Cladophora sp. to successfully grow and treat ADPE with up to 150 mg/L NH
Publisher: Elsevier BV
Date: 03-2017
DOI: 10.1016/J.BIORTECH.2016.12.044
Abstract: Environmental consequences of high productivity piggeries are significant and can result in negative environmental impacts, hence bioremediation techniques (in particular using macroalgae) are therefore of great interest. Here, the growth potential of several freshwater macroalgae in anaerobic digestion piggery effluent (ADPE), their nutrient removal rates and biochemical composition of the biomass were investigated under outdoor climatic conditions. A consortium of two macroalgae, Rhizoclonium sp. and Ulothrix sp. was isolated and could efficiently grow in the ADPE. Maximum ammonium removal rate (30.6±6.50mg NH
Publisher: Springer Science and Business Media LLC
Date: 14-02-2023
DOI: 10.1007/S10811-023-02915-2
Abstract: Here, we evaluated the effect of culture depth on the growth and nutrient removal rate of Scenedesmus sp. grown in anaerobically digested abattoir effluent (ADAE) and cultivated semi-continuously in raceway ponds at depths of 14 cm, 17 cm, 20 cm, and 23 cm during Austral winter and summer. Culture medium pH was kept constant at pH 6.5 for all treatments throughout the experimental period using a pH–stat system. Algal cultures grown in summer had 2.3- 2.7 times higher biomass productivity than the same grown in winter. In both seasons, maximum volumetric productivity of this alga was achieved at 14 cm depth (14 cm depth⩾ 17 cm depth⩾ 20 cm depth⩾ 23 cm depth). However, areal biomass productivity of culture grown at 23 cm depth was 12% and 29% higher than that of culture grown at 14 cm depth in winter and summer, respectively. In addition, nitrogen, phosphorus and COD areal removal rates were significantly higher in cultures operated at 23 cm among all treatments in both seasons. The effective quantum yield (F q '/F m ') in summer was 23 cm depth = 20 cm depth 17 cm depth = 14 cm depth while it followed 14 cm depth⩾ 17 cm depth⩾ 20 cm depth⩾ 23 cm depth in winter, indicating significance of operational conditions on algal photosynthesis. The outcome of this study shows that, irrespective of the season, operating the culture in higher depths significantly increased areal biomass productivity as well as areal nutrient removal rates when treating ADAE.
Publisher: Elsevier BV
Date: 05-2023
Publisher: Elsevier BV
Date: 09-2022
Publisher: Elsevier BV
Date: 11-2018
No related grants have been discovered for Ashiwin Vadiveloo.