文献类型：期刊文献

中文题名：蟹壳生物吸附剂对水中镍离子的吸附研究

英文题名：Study on the Adsorption of Nickel Ion by Crab Shell Biosorbent

作者：邱兆富[1];吕树光[1];洪丽云[1];李良[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2008

卷号：27

期号：1

起止页码：50

中文期刊名：净水技术

外文期刊名：Water Purification Technology

收录：CSTPCD

语种：中文

中文关键词：生物吸附剂;蟹壳重金属;镍离子

外文关键词：biosorbent crab shell heavy metal nickel ion

摘要：采用颗粒状蟹壳(0.25～0.80mm)对水中Ni2+的去除进行了静态吸附试验,考察了搅拌强度、吸附剂投加量、溶液初始pH值以及Zn2+或Cu2+的存在对Ni2+吸附效果的影响。试验结果表明,为保证Ni2+的去除率,搅拌强度应不小于350r/min,溶液初始pH值宜控制在4～7;Cu2+的存在对Ni2+的吸附有较大影响。经过5级静态吸附后,Ni2+的吸附量达到43.4mg/g。蟹壳对Ni2+的吸附符合Freundlich吸附等温模型。
Crab shell particles （0.25-0.80mm） were employed for Ni^2＋ removal from aqueous media in batch experiments. The effects of agitation speed, sorbent dosage, initial pH value of the adsorption media and the presence of Zn^2＋ or Cu^2＋ on Ni^2＋ removal by the crab shell were investigated. Results showed that the biosorption process should be controlled at the agitation speed of 350 r/min and pH 4.0-7.0 to attain a high efficiency of Ni^2＋ removal. The existence of Cu^2＋ had a significantly negative effect on Ni^2＋ biosorptiou in this study. Ni^2＋ uptake after 5-step sequential batch test reached 43.4mg/g. The Ni^2＋ adsorption by the crab shell was fitted well with Freundlich isotherm equation.