ORCID Profile
0000-0002-6866-4474
Current Organisations
UNSW Sydney
,
University of Sydney
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Publisher: Informa UK Limited
Date: 02-10-2022
Publisher: Trans Tech Publications, Ltd.
Date: 07-10-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.356-360.1319
Abstract: Chlorophenols is a kind of environmental endocrine disrupting chemicals (EDCs) and it is hard for the common methods to degrade or remove them, so how to decompose these pollutants has attracted researches’ attention. In this paper, a novel α-Ga 2 O 3 was used to degrade 4-chlorophenol via photocatalytic reaction and degradation kinetics was investigated. The effects of main factors, such as dosage of α-Ga 2 O 3 and pH of aqueous solution, on degradation were studied, and degradation kinetics was also established. Experimental results displayed that the optimal pH of aqueous solution was about 7.8 and almost 98% 4-chlorophenol was decomposed after 2 h, when the dosage of α-Ga 2 O 3 was 0.4 g and the initial concentration of 4-chlorophenol was 20 mg/L (V=200 ml). Photocatalytic degradation of 4-chlorophenol with α-Ga 2 O 3 abided by first-order kinetics and half-life time was 20.4 min.
Publisher: Trans Tech Publications, Ltd.
Date: 07-10-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.356-360.1315
Abstract: Because of the environmental danger of heavy metal ions, how to safely and efficiently remove them has became a research hot point. Compared with common methods, adsorption is a better treatment for heavy metal ions. In this paper, Cu 2+ was removed from aqueous solution by a kind of environmentally friendly cellulosic adsorption resin and adsorption performance was investigated. The effects of factors, such as adsorbent dosage and solution pH, on adsorption were investigated. Experimental results displayed that adsorption performed well in neutral solution, and removal was about 94% when used dosage of resin was 0.6 g/L and initial concentration of Cu 2+ was 25 mg/L. Cellulosic resin owned powerful adsorption capability for other heavy metal ions, also. Adsorption behavior abided by Langmuir adsorption isothermal model, and maximum adsorption capability and equilibrium constant was 71.43 mg/g and 1.22 L/g, respectively. Resin could be regenerated by 8% ammonia and regeneration ratio was 74% after 2.5 h.
Publisher: Trans Tech Publications, Ltd.
Date: 07-10-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.356-360.2246
Abstract: A new kind of cellulosic adsorbent for heavy metal ions was prepared by grafting copolymerization in microwave irradiation field, where acrylic acid (AA) and acrylamide (AM) were used as monomers and carboxymethyl cellulose (CMC) was used as bond. The effects of factors such as microwave irradiation power and time, dosage of initiator (sodium persulfate) and crosslinker (N, N’-methylene bisacrylamide), and neutralization degree on the adsorption for Cu 2+ were investigated. Experimental results showed that the optimal conditions were as follows: microwave irradiation power and time was 360 W and 3.5 min, respectively dosage of initiator and crosslinker was 4.1 g/L and 1.9 g/L, respectively, and neutralization degree was 75%.
Publisher: Elsevier BV
Date: 03-2022
Location: No location found
No related grants have been discovered for Yuan Wei.