β-环糊精/膨润土处理高含量重金属废弃钻井液  

The treatment of high-heavy metal ion-containing waste drilling fluid by β-cyclodextrin/bentonite

作　　者：董汶鑫 蒲晓林[1] 翟玉芬 尹启新 Dong Wenxin;Pu Xiaolin;Zhai Yufeng;Yin Qixin(Petroleum Engineering School,Southwest Petroleum University,Chengdu 610500,China;School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]西南石油大学化学化工学院,四川成都610500

出　　处：《工业水处理》2020年第3期27-30,共4页Industrial Water Treatment

基　　金：“十三五”国家重大专项(2011ZX05020-004);国家重点基础研究发展计划(2013CB228003);国家自然科学基金青年科学基金项目(51804263);西南石油大学研究生科研创新基金(2019cxyb024)

摘　　要：针对重金属含量严重超标的废弃钻井液,提出以β-环糊精与膨润土联合制备高效重金属吸附剂。β-环糊精/膨润土对Cd(Ⅱ)与Cr(Ⅲ)的吸附行为高度符合D-R方程,符合准二级动力学模型,吸附过程受化学及离子交换吸附控制。室温(25℃)下β-环糊精/膨润土投加质量浓度为9 g/L,处理结果可达《地表水环境质量标准》(GB 3838-2002)Ⅱ类水体标准,吸附平衡时间为9 min。The highly effective heavy metal adsorbent was prepared with β-cyclodextrin and bentonite to treat the heavy metal-containing waste drilling fluid. The adsorption behavior of β-cyclodextrin/bentonite for Cd ( Ⅱ ) and Cr (Ⅲ ) is highly fitted to D-R equation,and the adsorption kinetics is in accordance with the quasi-second-order kinetic model. The adsorption process is controlled by chemical and ion exchange adsorption. When the dosage of β-cyclodextrin/bentonite is 9 g/L at room temperature(25 ℃),the heavy metal content of waste drilling fluid can meet the limit of Environmental Quality Standard for Surface Water(GB 3838-2002) and the adsorption equilibrium time is 9 min.

关 键 词：废弃钻井液 Β-环糊精 膨润土 吸附 重金属 

分 类 号：X741[环境科学与工程—环境工程]