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Fast removal of cyanobacterial toxin microcystin-LR by a low-cytotoxic microgel-Fe(III) complex

文献类型：期刊论文

作者Dai, Guofei1,2; Quan, Changyun3; Zhang, Xianzheng3; Liu, Jin1; Song, Lirong1; Gan, Nanqin1; Song, LR (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China.
刊名WATER RESEARCH
出版日期2012-04-01
卷号46期号:5页码:1482-1489
关键词Microcystin-lr (Mc-lr) Removal Microgel-fe(Iii) Activated Carbon
ISSN号0043-1354
DOI10.1016/j.watres.2011.11.010
文献子类Article
英文摘要Eutrophication has become a serious environmental threat throughout the world. In particular, the presence of cyanobacteria toxins, especially microcystins (MCs), has become a severe problem. Inhibition of Microcystis growth in water resources is the most effective way to reduce MCs, but it is a long-term investment. In the present study, a microgel-Fe(III) complex was developed for the fast removal of MC-LR. The microgel-Fe(III) characteristics and the MC-LR removal dynamics in Milli-Q water and natural water were evaluated. The removal efficiency negatively correlated to the initial MC-LR concentration and pH value (2.0-11.5), but the kinetics was not significantly influenced. The presence of natural organic matter (NOM) in water slightly reduced MC-LR removal using microgel-Fe(III). In addition, microgel-Fe(III) removed 98.99% of MC-LR in 12 min, while for activated carbon, it took 15-24 h to reach equilibrium. Furthermore, methanol was found to regenerate the microgel-Fe(III) after MC-LR removal for at least five regeneration cycles. Finally, the microgel-Fe(III) material was made into a membrane so that MCs could be removed by filtration. Therefore, microgel-Fe(III) is an effective technology and has a great potential in removing MC-LR from drinking water resources. (C) 2011 Elsevier Ltd. All rights reserved.; Eutrophication has become a serious environmental threat throughout the world. In particular, the presence of cyanobacteria toxins, especially microcystins (MCs), has become a severe problem. Inhibition of Microcystis growth in water resources is the most effective way to reduce MCs, but it is a long-term investment. In the present study, a microgel-Fe(III) complex was developed for the fast removal of MC-LR. The microgel-Fe(III) characteristics and the MC-LR removal dynamics in Milli-Q water and natural water were evaluated. The removal efficiency negatively correlated to the initial MC-LR concentration and pH value (2.0-11.5), but the kinetics was not significantly influenced. The presence of natural organic matter (NOM) in water slightly reduced MC-LR removal using microgel-Fe(III). In addition, microgel-Fe(III) removed 98.99% of MC-LR in 12 min, while for activated carbon, it took 15-24 h to reach equilibrium. Furthermore, methanol was found to regenerate the microgel-Fe(III) after MC-LR removal for at least five regeneration cycles. Finally, the microgel-Fe(III) material was made into a membrane so that MCs could be removed by filtration. Therefore, microgel-Fe(III) is an effective technology and has a great potential in removing MC-LR from drinking water resources. (C) 2011 Elsevier Ltd. All rights reserved.
WOS关键词POTASSIUM-PERMANGANATE ; ENVIRONMENTAL FATE ; MASS-SPECTROMETRY ; ACTIVATED CARBON ; WATER ; DEGRADATION ; ADSORPTION ; PURIFICATION ; OXIDATION ; SEDIMENTS
WOS研究方向Engineering ; Environmental Sciences & Ecology ; Water Resources
语种英语
WOS记录号WOS:000301018700013
资助机构973 Program[2008CB418000]; Natural Science Foundation of China-Yunnan[U0833604]; National Natural Science Foundation of China[31070355] ; 973 Program[2008CB418000]; Natural Science Foundation of China-Yunnan[U0833604]; National Natural Science Foundation of China[31070355] ; 973 Program[2008CB418000]; Natural Science Foundation of China-Yunnan[U0833604]; National Natural Science Foundation of China[31070355] ; 973 Program[2008CB418000]; Natural Science Foundation of China-Yunnan[U0833604]; National Natural Science Foundation of China[31070355]
公开日期2012-09-25
源URL[http://ir.ihb.ac.cn/handle/342005/17059]  
专题水生生物研究所_藻类生物学及应用研究中心_期刊论文
通讯作者Song, LR (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China.
作者单位1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Wuhan Univ, Key Lab Biomed Polymers, Minist Educ, Dept Chem, Wuhan 430072, Peoples R China
推荐引用方式
GB/T 7714		 Dai, Guofei,Quan, Changyun,Zhang, Xianzheng,et al. Fast removal of cyanobacterial toxin microcystin-LR by a low-cytotoxic microgel-Fe(III) complex[J]. WATER RESEARCH,2012,46(5):1482-1489.
APA Dai, Guofei.,Quan, Changyun.,Zhang, Xianzheng.,Liu, Jin.,Song, Lirong.,...&Song, LR .(2012).Fast removal of cyanobacterial toxin microcystin-LR by a low-cytotoxic microgel-Fe(III) complex.WATER RESEARCH,46(5),1482-1489.
MLA Dai, Guofei,et al."Fast removal of cyanobacterial toxin microcystin-LR by a low-cytotoxic microgel-Fe(III) complex".WATER RESEARCH 46.5(2012):1482-1489.

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来源：水生生物研究所

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