黄原酸化膨润土的制备及脱除亚甲基蓝的性能研究  

Preparation of xanthated bentonite and its removal behavior for methylene-blue

作　　者：王荣民[1] 李慧茹[1] 李芳蓉[1] 何玉凤[1] 王华[1] 

机构地区：[1]生态环境相关高分子材料教育部重点实验室甘肃省高分子材料重点实验室西北师范大学化学化工学院,兰州730070

出　　处：《化工新型材料》2012年第3期134-137,共4页New Chemical Materials

基　　金：国家自然科学基金(20964002);甘肃省高校基本科研业务费专项资金项目(2010-176)

摘　　要：对膨润土进行改性制得黄原酸化膨润土(XB),通过FT-IR、TG、SEM、粒度分析对XB进行了表征,结果表明,碳硫键接到了膨润土表面,使其亲水性降低,表面积增大。通过XB对亚甲基蓝的吸附试验,表明XB是一种环境友好型吸附剂。考察了亚甲基蓝初始浓度、吸附时间、温度、pH值、吸附剂用量对其吸附性能的影响。结果表明:在25℃,pH=7～8,亚甲基蓝初始浓度100mg/L,XB用量为2g/L,吸附30min时,XB对亚甲基蓝的脱色率达到99.93%,处理后废水可达标排放。Xanthate was successfully grafted onto bentonite.The obtained xanthated bentonite（XBent） was characterized by FT-IR,spectrophotometer,thermogravimetric analysis（TG）,scanning electron microscopy（SEM） and particle size analysis.The results showed that the surface area was increased after modified and hydrophilicity was reduced.XBent acting as a type of environmentally friendly adsorbent was applied to remove methylene blue from aqueous solutions.The main factors of removal methylene blue by XBent were studied in details.The optimum conditions were as follows： the pH value was 7-8,initial concentration of methylene blue was 100 mg/L,XBent = 2g/L,oscillating 30 min at 25℃.The removal rate of methylene blue was up to 99.93%,wastewater which being treated can be discharged directly.

关 键 词：黄原酸化膨润土 亚甲基蓝 吸附 

分 类 号：X703[环境科学与工程—环境工程]