Effective removal of microcystins using carbon nanotubes embedded with bacteria

查看全文 作　　者：YANHai PANGang ZOUHua LiXianliang [1]CHENHao

机构地区：[1]StateKeyLaboratoryofEnvironmentalAquaticChemistry,ResearchCenterforEco-environmentalSciences,ChineseAcademyofSciences,Beijing100085,China

出　　处：《Chinese Science Bulletin》索引2004年第49卷第16期,共5页

摘　　要：Adsorption of microcystins (MCs) by carbon nanotubes (CNTs) and clay materials was studied. Compared with various clays tested, CNTs showed a much stronger ability to adsorb MC-RR and LR that were two typical types of microcystins found in China. At initial 21.0 mg/L of MC-RR and 9.5 mg/L of MC-LR in solution, the adsorption amounts of MC-RR and LR by CNTs were 14.8 and 6.7 mg/g that were about five times higher than those by the clay ma-terials of sepiolite, kaolinite and talc, etc. In the presence of CNTs and the bacterial Ralstonia solanacearum that was firstly isolated and used for the biodegradation of MCs by the authors, a remarkable removal of MCs from water were observed. The mechanism was that CNTs could absorb large amount of both MCs and the embedded R. solanacearum so that, even when diluted by a large amount of water, the con-centrations of both organic pollutants and the added bacteria could be largely enhanced on the surface of CNTs where a concerted biodegradation reaction was effectively conducted. This finding could be important for the further development of practical techniques to eliminate MCs from polluted drinking waters. 关键词：微藻素吸附碳纳米管细菌植入粘土 Ralstonia SOLANACEARUM 茄科青枯雷尔氏菌废水处理

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Effective removal of microcystins using carbon nanotubes embedded with bacteria

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