| 有机膨润土在Pb2+和p-硝基苯酚复合污染中的吸附及机理 |
| |
| 引用本文： | 沈学优,卢瑛莹,吴双双,孙俊杰,朱利中.有机膨润土在Pb2+和p-硝基苯酚复合污染中的吸附及机理[J].环境科学,2004,25(3):168-170. |
| |
| 作者姓名： | 沈学优 卢瑛莹 吴双双 孙俊杰 朱利中 |
| |
| 作者单位： | 1. 浙江大学环境科学系,杭州,310028
2. 浙江省环境保护科学设计研究院,杭州,310007 |
| |
| 基金项目： | 国家自然科学基金资助项目(29777005;20277032);浙江省自然科学基金资助项目(GJ0202) |
| |
| 摘 要： | 以Pb2+、p-硝基苯酚为代表污染物,用实验室模拟法研究了有机膨润土在重金属-有机物混合污染体系中的吸附行为.结果表明,在有机膨润土/Pb2+/p-硝基苯酚体系中,溶液中共存Pb2+会延缓p-硝基苯酚在有机膨润土上的吸附速率;Pb2+与p-硝基苯酚产生竞争吸附,竞争作用的大小与溶液中p-硝基苯酚和Pb2+的浓度比c(酚/Pb)以及有机膨润土对污染物的吸附机制有关,相对于吸附机制以分配作用为主的100CTMAB-膨润土,Pb2+与p-硝基苯酚在以表面吸附为主的100TMAB-膨润土上的竞争吸附更强.
|
| 关 键 词： | 有机膨润土 Pb2+ p-硝基苯酚 吸附 |
| 文章编号： | 0250-3301(2004)03-0168-03 |
| 收稿时间： | 2003/5/13 0:00:00 |
| 修稿时间： | 2003/8/17 0:00:00 |
Adsorption Behavior and Mechanisms in Dual-solutes of Pb2+ and p-Nitrophenol by Organobentonites |
| |
| SHEN Xue-you,LU Ying-ying,WU Shuang-shuang,SUN Jun-jie and ZHU Li-zhong.Adsorption Behavior and Mechanisms in Dual-solutes of Pb2+ and p-Nitrophenol by Organobentonites[J].Chinese Journal of Environmental Science,2004,25(3):168-170. |
| |
| Authors: | SHEN Xue-you LU Ying-ying WU Shuang-shuang SUN Jun-jie and ZHU Li-zhong |
| |
| Institution: | Department of Environmental Science, Zhejiang University, Hangzhou 310028, China. |
| |
| Abstract: | The sorption behavior for organobentonites to sorb organic pollutants from metal-organic pollutant systems were investigated.The results suggested that in organobentonite/Pb2+/p-nitrophenol solute systems,Pb2+ can slow the sorption velocity of organobentonite to adsorb p-nitrophenol from water.Pb2+ and p-nitriphenol exhibit a competitive effect.The competitive effects were relevant to ration of p-nitrophenol and Pb2+ and adsorption mechanisms of organobentonites.Bentonite modified with TMAB adsorbing contaminants primarily by a adsorption process,and the process exhibits a stonger competitive effect in multi-solute systemms. |
| |
| Keywords: | organobentonites Pb2+ p-nitrophenol adsorption |
| 本文献已被 CNKI 维普 万方数据 PubMed 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
