首页|黑藻对铜离子和镍离子的生物吸附性能

黑藻对铜离子和镍离子的生物吸附性能

Bio-Adsorption Behavior of Hydrilla Verticillata for Cu2+ and Ni2+

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为了经济实用地对废水进行处理,将来源广泛的黑藻制成粉末加入到含铜、镍离子的废水中,研究了其对废水中铜、镍离子的吸附作用,考察了溶液pH值、金属离子初始浓度、吸附剂用量、吸附时间和干扰离子等因素对吸附性能的影响.结果表明:黑藻吸附2种重金属离子的速度快,30 min即达到吸附平衡,适宜的pH值为5.0~6.0,干扰离子对Ni2+的影响大于对Cu2+的影响;黑藻对2种重金属的吸附均符合Langmiur,FreunoUich和Dubinin-Radushkevich(D-R)模型,对2种金属离子的吸附能力顺序是:Cu2+>Ni2+.
The adsorption behavior of Hydrilla Verticillata for Cu2+ and Ni2+ in wastewater was studied. The effects of pH value of the wastewater, initial con-centration of metal ions, dosage of the biosorbent, contact time and interference ions on the adsorption behavior were studied. It was found that Hydrilla Verticillata was able to adsorb the two kinds of heavy metal ions, and the adsorption reached balance 30 min later. The suitable pH value for adsorption was 5.0, and mixed-metal ions had a larger effect on the adsorption behavior of Hydrilla Verticillata for Ni2+ than for Cu2+. Moreover, the ad-sorption behavior of Hydrilla Verticillata for Ni2+ and Cu2+ could be fitted by using Langmiur, Freundlich and D-R equations. The order of adsorption capacity was ranked as Cu2+ > Ni2+.

wastewater treatmentHydrilla VerticillataCu2+Ni2+isothermal adsorption model

黄灵芝、曾光明、黄丹莲、李丽峰、张玲

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湖南大学环境科学与工程学院,湖南,长沙,410082

长沙理工大学化学与生物工程学院,湖南,长沙,410077

废水处理 黑藻 生物吸附 Cu2+ Ni2+ 等温吸附模型

国家高技术研究发展计划(863计划)高技术资助项目国家重点基础研究发展规划(973计划)国家杰出青年科学基金国家杰出青年科学基金湖南省教育厅资助项目

2004AA6493702005CB724203502259265042592708C113

2010

材料保护
武汉材料保护研究所,中国腐蚀与防护学会 中国表面工程协会

材料保护

CSTPCDCSCD北大核心
影响因子:1.129
ISSN:1001-1560
年,卷(期):2010.43(3)
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