膨润土改性及其吸附性能研究  

Study on modification and adsorption properties of bentonite

作　　者：苑丽质[1] 

机构地区：[1]唐山学院环境与化学工程系,河北唐山063000

出　　处：《应用化工》2016年第3期482-484,共3页Applied Chemical Industry

基　　金：河北省教育厅项目(Z2015007)

摘　　要：采用焙烧改性、碱改性、盐改性及表面活性剂改性对膨润土进行改性处理,并以亚甲基蓝为模拟染料污染物考察了吸附性能,优化了改性条件。结果表明,膨润土经改性后,其吸附性能较原土提高显著。适宜的改性条件是:焙烧温度为450℃,碱改性剂为氢氧化钠,盐改性剂为碳酸钠,表面活性剂为十六烷基三甲基溴化铵。当用十六烷基三甲基溴化铵改性膨润土2 g处理100 m L、1 g/L亚甲基蓝溶液时,亚甲基蓝的脱色率高达85.06%。The bentonite was modified by calcination modification,alkali modification,salt modification and surfactant modification,the adsorption property of the modified bentonite was studied by methylene blue using as the simulated reacrent,and the modified conditions were optimized. The results showed that the adsorption properties of bentonite were significantly improved after modification. The optimum conditions were that the calcination temperature was 450 ℃,the alkali modifier was sodium hydroxide,the salt modifier was sodium carbonate,and the surfactant was three alkyl sixteen methyl bromide. When the dosage of sixteen alkyl three methyl bromide modified bentonite was 2 g,the decolorization rate of methylene blue（ 100 m L,1 g / L） was 85. 06%.

关 键 词：膨润土 改性 吸附 亚甲基蓝 

分 类 号：TQ041[化学工程] TB332[一般工业技术—材料科学与工程]