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  5. 期刊论文
Effects of Cd(2+) and Pb(2+) on the substrate biofilms in the integrated vertical-flow constructed wetland

文献类型：期刊论文

作者Zhang Jinlian1,2; Cheng Shuiping1; He Feng1; Liang Wei1; Wu Zhenbin1
刊名JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
出版日期2008
卷号20期号:8页码:900-906
关键词Cd(2+) Pb(2+) biofilms dehydrogenase activity polysaccharide content integrated vertical-flow constructed wetland (IVCW)
ISSN号1001-0742
英文摘要The effects of single Cd(2+) and Pb(2+), and combined Cd(2+) and Pb(2+) on dehydrogenase activity and polysaccharide content of the substrate biofilms in the integrated vertical-flow constructed wetland (IVCW) were studied. Dehydrogenase activities decreased linearly with the increasing concentrations of Cd(2+) and Pb(2+) at different times (6, 24, 72, and 120 h). The activities at both 6 and 24 h were significantly higher than that at 72 and 120 h in the case of single and combined treatments. The single Cd(2+) and Pb(2+) treatments significantly inhibited dehydrogenase activities at concentrations in excess of 20 mu mol/L Cd(2+) and 80 mu mol/L Pb(2+), respectively. The inhibitory effect of Cd(2+) was much greater than that of Pb(2+). At the same time, the combined treatment of Cd(2+) and Pb(2+) Significantly inhibited dehydrogenase activities at all five concentrations studied and the lowest combined concentration was 1.25 mu mol/L Cd(2+) and 5 mu mol/L Pb(2+). A synergistic effect of Cd(2+) and Pb(2+) was observed. On the other hand, polysaccharide contents varied unpredictably with the increasing concentrations of Cd(2+) and Pb(2+) and extended experimental time. There were no significant statistical differences within the range of concentration and time studied, whether singly or in combination. These results implied that the effects of heavy metals on biofilms should be a concern for the operation and maintenance of constructed wetlands.
WOS标题词Science & Technology ; Life Sciences & Biomedicine
类目[WOS]Environmental Sciences
研究领域[WOS]Environmental Sciences & Ecology
关键词[WOS]RESPIRING BACTERIA ; HEAVY-METALS ; REMOVAL ; NUTRIENT
收录类别SCI
语种英语
WOS记录号WOS:000258460100002
公开日期2015-12-27
源URL[http://ir.ihb.ac.cn/handle/342005/27365]  
专题水生生物研究所_水环境工程研究中心_期刊论文
作者单位1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhang Jinlian,Cheng Shuiping,He Feng,et al. Effects of Cd(2+) and Pb(2+) on the substrate biofilms in the integrated vertical-flow constructed wetland[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2008,20(8):900-906.
APA Zhang Jinlian,Cheng Shuiping,He Feng,Liang Wei,&Wu Zhenbin.(2008).Effects of Cd(2+) and Pb(2+) on the substrate biofilms in the integrated vertical-flow constructed wetland.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,20(8),900-906.
MLA Zhang Jinlian,et al."Effects of Cd(2+) and Pb(2+) on the substrate biofilms in the integrated vertical-flow constructed wetland".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 20.8(2008):900-906.

入库方式： OAI收割

来源：水生生物研究所

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