HDTMA-膨润土改性黄土对重金属和有机污染物的吸附研究  

Adsorption of Heavy Metals and Organic Pollutants by HDTMA-Bentonite Modified Loess

作　　者：马常泉 张明 马强 马淑栩 MA Changquan;ZHANG Ming;MA Qiang;MA Shuxu(Henan Urban and Rural Water Research Institute Co.Ltd.,Zhengzhou 450000,China;School of Civil Engineering and Architecture,Zhengzhou University of Aeronautics,Zhengzhou 450015,China;Faculty of Art,Design and Architecture,Monash University,Melbourne 3800,Australia;Shanghai Jian Qiao University,Shanghai 200120,China)

机构地区：[1]河南省城乡水务研究院有限公司,郑州450000 [2]郑州航空工业管理学院土木建筑学院,郑州450015 [3]蒙纳士大学艺术设计与建筑学院,澳大利亚墨尔本3800 [4]上海建桥学院,上海200120

出　　处：《河南科学》2023年第7期994-1001,共8页Henan Science

基　　金：河南省科技攻关项目(212102310968,222102320137);河南省高等学校重点科研项目(21A410004);河南省住房城乡建设科技计划项目(HNJS-2020-k25);中国博士后科学基金第72批面上项目(2022M721046)。

摘　　要：以河南三门峡地区马兰黄土为基础,用阳离子表面活性剂十六烷基三甲基氯化铵(HDTMA)和膨润土改性黄土做吸附剂,选用重金属Cu^(2+)、Zn^(2+)和可离子化有机物苯酚为吸附质,通过批平衡实验法,分析HDTMA-膨润土改性黄土对重金属和有机污染物的吸附效果.结果表明:与纯黄土相比,膨润土的掺加能显著提高材料对有机污染物的去除率,掺加HDTMA亦可改善黄土对污染物的吸附能力.HDTMA-膨润土改性黄土混合吸附材料对Cu^(2+)和苯酚的等温吸附与Freundlich模型的相关性最好,而HDTMA-膨润土改性黄土混合吸附材料对Zn^(2+)的等温吸附与Langmuir模型的相关性最好,本研究为黄河流域固体废物处置场改性黄土衬垫层和盖层材料开发提供数据支撑.Based on Malan loess in Sanmenxia area of Henan Province,using the cationic surfactant hexadecyl ammonium chloride(HDTMA)and bentonite modified loess as adsorbents,and using heavy metals Cu^(2+),Zn^(2+) and ionizable organic phenol as adsorbates,the adsorption effect of heavy metals and organic pollutants by HDTMA-bentonite modified loess is studied by batch equilibrium experiment method.The results show that compared with pure loess,the addition of bentonite can improve the removal rate of organic pollutants by loess,and the adsorption capacity of pure loess is enhanced after adding HDTMA.The isothermal adsorption of Cu^(2+) and phenol by HDTMA-bentonite modified loess mixed adsorbent material has the best correlation with the Freundlich model,while the isothermal adsorption of Zn^(2+)by HDTMA-bentonite modified loess mixed adsorbent has the best correlation with the Langmuir model.This study provides data support for the development of modified loess liner and cover materials for solid waste disposal sites in the Yellow River Basin.

关 键 词：黄土 膨润土 十六烷基三甲基氯化铵 污染物吸附 固体废物处置场 

分 类 号：P642[天文地球—工程地质学] X705[天文地球—地质矿产勘探]