| 表面活性剂对中性氧化铝吸附甲基对硫磷的影响 |
| 摘要点击 1444 全文点击 1437 投稿时间：2006-02-21 修订日期：2006-04-17 |
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| 中文关键词 中性氧化铝 离子型表面活性剂 吸附作用 甲基对硫磷 |
| 英文关键词 neutral alumina ionic surfactant adsorption effect methyl parathion |
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| 中文摘要 |
| 分别应用离子型表面活性剂十二烷基硫酸钠(SDS)、十二烷基苯磺酸钠(SDBS)和十六烷基三甲基溴化铵(CTMAB)改性中性氧化铝对甲基对硫磷这种疏水性环境污染物进行吸附性能研究.结果表明，中性氧化铝对甲基对硫磷的吸附行为与表面活性剂的种类和浓度及环境中pH值有关.原中性氧化铝对甲基对硫磷的吸附能力较小，加入阴离子表面活性剂及调节pH值后其吸附能力增强.氧化铝对3种离子型表面活性剂的吸附性能有所不同，在中性条件下，对SDS的吸附量最大，对CTMAB的吸附量最小；当介质pH为4时，氧化铝对SDS或SDBS的吸附量都有所增大，对CTMAB的吸附量则下降.甲基对硫磷和阴离子表面活性剂同时存在于溶液中时，产生协同效应，使氧化铝对甲基对硫磷的吸附能力有所提高.而阳离子表面活性剂存在下，氧化铝对甲基对硫磷的吸附能力则逐渐下降. |
| 英文摘要 |
| The sorption of methyl parathion by neutral alumina which was modified by ionic surfactants such as SDS、SDBS and CTMAB was studied.It showed that the adsorbability of alumina to methyl parathion were related to the type and concentration of surfactant and pH of the system.The adsorbabilities of alumina on three kinds of surfactants were different.When pH=7,the adsorbance of SDS was the largest,but the adsorbance of CTMAB was the smallest.When pH=4,the adsorbance of SDS or SDBS was increased,while the adsorbance of CTMAB was decreased.The adsorbability of alumina was strengthened,not weakened,by the cooperation of pollutant and anionic surfactant,while the sorption of methyl parathion by alumina with cationic surfactant was weakened.These features had the practical value when neutral alumina is used to remove more than one contaminants from wastewater. |
