厌氧颗粒污泥藻酸盐对铜离子的吸附研究  

Copper recovery by bacterial alginate extracted from anaerobic granular sludge

作　　者：王琳[1] 张海玲[1] 林跃梅[1] 

机构地区：[1]中国海洋大学环境科学与工程学院,青岛266100

出　　处：《环境工程学报》2010年第1期31-34,共4页Chinese Journal of Environmental Engineering

基　　金：山东省自然科学基金资助项目(Z2007B07);山东省优秀中青年科学家奖励基金(2008BS06013)

摘　　要：从厌氧颗粒污泥中成功提取出细菌藻酸盐并制备成藻酸钙吸附剂,研究其对水中Cu^(2+)的吸附性能。实验结果表明,接触时间、Cu^(2+)初始浓度和溶液初始pH是影响Cu^(2+)吸附性能的重要因素。吸附等温线研究表明,Langmuir模型比Freundlich模型能更好地描述吸附过程。Cu^(2+)在藻酸钙上的吸附动力学过程可以很好地用Pseudo二级动力学方程来描述。以100 mmol/L HCI为解吸剂,可有效洗脱藻酸钙上95%的Cu^(2+),实现Cu^(2+)的回收。The biosorption property of copper by the dried Ca-alginate extracted from anaerobic granular sludge was investigated in batch system. The experimental results showed that the contact time, Cu^2＋ initial concentration and solution initial pH had significant effects on Cu^2＋ biosorption capacity. Accumulation of Cu^2＋ followed Langmuir adsorption isotherm better than Freundlich adsorption isotherm. The biosorption kinetics was described by the Pseudo-second-order equation quite well. The Ca-sludge alginate bio-adsorbent could be regenerated by 100 mmol/L HC1 with 95% Cu^2＋ recovery.

关 键 词：铜 细菌藻酸盐 生物吸附 厌氧颗粒污泥 

分 类 号：X703.1[环境科学与工程—环境工程]