Study on Biosorption of Cu2+, Cr6+ and Ni2+ by Waste–activated Sludge

摘要：

The waste-activated sludge as an adsorbent to remove heavy metals from aqueous solutions has been discussed in this paper. Impacts of different pH, temperature, biosorption time and concentrations on sludge adsorbent have been experimental tested, for the purpose to investigate the factors affecting the biosorption efficiency of heavy metals. And it was concluded that the influence of temperature on the biosorption of heavy metal is not significant, but pH and sludge concentration affect the bio-sorption efficiency seriously. Also it was found that the bio-sorption of heavy metal is a rapid process. At the same time, the sorption isotherms of heavy metal adsorption have been calculated. The biosorption ability of this sludge adsorbent to different heavy metals has also been studied, and the results indicated that it had higher biosorption efficiency of Cr6+ than that of Cu2+ and Ni2+.

关键词： waste-activated sludge biosorption heavy metals

作者: WANG Zhilou XIE Xuehui LIU Jianshe LIU Guizhen XIAO Shengmu SHI Qili

作者单位: College of environmental Science &Engineering,Donghua University,Shanghai 201620,China

会议类型: 国际会议

会议名称: 2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)

会议地点: 上海

会议语种:英文

页码: 1720-1723

在线出版日期: 2009-06-02（万方平台首次上网日期，不代表论文的发表时间）