生态与农村环境学报2017，Vol.33Issue(8)：730-736,7.DOI:10.11934/j.issn.1673-4831.2017.08.008
壳聚糖活性污泥复合吸附剂处理铅、镉废水研究
Research on Adsorption Performance of Chitosan?Activated Sludge Composite Adsorbent to Cadmium and Lead in Wastewater
摘要
Abstract
The adsorption performance of the chitosan?activated sludge composite adsorbent on cadmium and lead in wastewater was examined, and the influencing factors, such as temperature, SCTS addition, pH, rotate speed and the con?centration of heavy metals were investigated in a single factor experiment, thus the order of influencing factors and the opti?mal combination were determined in an orthogonal experiment. The results show that the factors affecting the adsorption of lead followed the order of pH>SCTS addition>initial concentration of Pb2+>rotate speed. The optimal adsorption of Pb2+could be reached with the pH of 2, SCTS addition of 10 g·L-1, Pb2+ initial concentration of 50 mg·L-1, and rotate speed of 130 r·min-1 , and the removal rate of Pb2+ reached 95. 76%. The factors influencing the adsorption of cadmium followed the order of pH>initial concentration of Cd2+>rotate speed>SCTS addition. The optimal adsorption of Cd2+could be reached with the pH of 2, SCTS addition of 2. 5 g·L-1 , Cd2+ initial concentration of 60 mg·L-1 , and rotate speed of 130 r·min-1 , and the removal rate of Cd2+reached 96. 08%. The composite adsorbent explores a new way for reutilization of sludge and provides a new method for wastewater treatment.关键词
壳聚糖/复合吸附剂/镉/铅/废水/吸附Key words
chitosan/composite adsorbent/cadmium/lead/wastewater/adsorption分类
资源环境引用本文复制引用
赵佐平,段敏,刘智峰,汤波,同延安..壳聚糖活性污泥复合吸附剂处理铅、镉废水研究[J].生态与农村环境学报,2017,33(8):730-736,7.基金项目
国家公益性行业科研专项(201203045) （201203045）
陕西省2011协同创新中心项目〔QBXT-Z(P)-15-5〕 （P）
2016年国家级大学生创新创业训练计划(201610720009) （201610720009）
