【摘要】 采用十六烷基三甲基氯化铵(HTMAC)作为有机改性剂制备有机改性膨润土(HTMAC-Bent),用于吸附水中六价铬(Cr(Ⅵ)),并考察了反应时间、初始p H值、投加量、初始浓度、温度等影响因素对HTMAC-Bent吸附水中Cr(Ⅵ)的影响。试验结果表明,HTMAC-Bent对水中Cr(Ⅵ)的吸附具有较好p H值适应性,去除率可达90%以上,投加量和初始浓度对吸附过程影响显著。更多还原

【Abstract】 N-Hexadecyltrimethylammon( HTMAC) was used as organic modifier,N-Hexadecyltrimethylammon modified benonite( HTMAC-Bent) was prepared and was exploited to adsorbd hexavalent chromium( Cr(Ⅵ)) in aqueous solution. The influences of reaction time,initial p H value,dosage,initial concentration and temperature on adsorption of Cr(Ⅵ) in aqueous solution using HTMAC-Bent were investigated. The results showed that adsorption of Cr(Ⅵ) in aqueous solution using HTMAC-Bent has a good adaptability with a wide range of p H value,the removal efficiency being higher than 90%. Initial concentration and dosage had a significant influence on the adsorption process.更多还原