镁铝水滑石对砷和阿散酸复合地下水的治理技术与机理  

Technology and Mechanism of Treatment of Mg/Al-HTLcs on Wastewater Contaminated by As(Ⅲ)and ASA

作　　者：胡静娴 臧淑艳[1] 党璐一 王娟[1] 高嵩[1] 董毅 李文龙 HU Jing-xian;ZANG Shu-yan;DANG Lu-yi;WANG Juan;GAO Song;DONG Yi;LI Wen-long(Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学理学院,辽宁沈阳110142

出　　处：《沈阳化工大学学报》2022年第3期199-204,共6页Journal of Shenyang University of Chemical Technology

基　　金：国家自然科学基金(41773136);辽宁省创新人才项目(LR2017073);沈阳化工大学基础研究项目(XXLJ 2019007)。

摘　　要：研究了碳酸根型镁铝水滑石(Mg/Al-HTLcs)吸附剂对As(Ⅲ)和含砷有机物阿散酸(ASA)复合污染地下水中砷的去除与吸附机理.结果表明:As(Ⅲ)和ASA质量浓度均为10 mg/L时,在25℃、Mg/Al-HTLcs投加量为5 g/L、吸附时间为24 h、pH=7的条件下,砷去除效果最佳,去除率分别为36.02%和70.73%,吸附量分别为2.40 mg/g和4.72 mg/g.Freundlich等温方程能更好地描述吸附过程;动力学研究表明吸附遵循准二级吸附动力学方程,并有非常好的相关性.The removal and adsorption mechanism of AS(Ⅲ)and arsenic containing organic compound arsanic acid(ASA)from groundwater by carbonate Mg/Al-HTLcs adsorbent were studied.The results showed that when the mass concentration of AS(Ⅲ)and ASA were both 10 mg/L,the dosage of Mg/Al-HTLcs was 5 g/L at 25℃,the adsorption time was 24 h and the pH was 7,the arsenic removal effect was the best.The removal rates were 36.02%and 70.73%,respectively.The adsorption amounts were 2.40 mg/g and 4.72 mg/g,respectively.Freundlich isothermal equation can better describe the adsorption process.The kinetic study shows that the adsorption follows the quasi second-order adsorption kinetic equation and has a very good correlation.

关 键 词：Mg/Al-HTLcs As(Ⅲ) 阿散酸 复合污染废水 吸附 

分 类 号：X703.1[环境科学与工程—环境工程]