| 有机膨润土在Pb2+和p-硝基苯酚复合污染中的吸附及机理 |
| 摘要点击 2375 全文点击 2020 投稿时间：2003-05-13 修订日期：2003-08-17 |
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| 中文关键词 有机膨润土 Pb2+ p-硝基苯酚 吸附 |
| 英文关键词 organobentonites Pb2+ p-nitrophenol adsorption |
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| 中文摘要 |
| 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.
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| 英文摘要 |
| 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. |
