基于CTAC改性活性炭膜包用于水溶液中Cr(Ⅵ)的吸附去除及其再生性研究  

CTAC modified activated carbon membrane-package for adsorption and removal of hexavalent chromium in aqueous solution and its regenerability

作　　者：郭晓涵 荆辉 赵曼淑 张晓龙[1] 王莉燕 李金花[2,4] 陈令新 GUO Xiaohan;JING Hui;ZHAO Manshu;ZHANG Xiaolong;WANG Liyan;LI Jinhua;CHENLingxin(School of Environmental and Material Engineering,Yantai University,Yantai 264005,China;CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Shandong Key Laboratory of Coastal Environmental Processes,Research Center for Coastal Environmental Engineering and Technology,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China;School of Environmental Science and Engineering,Shandong University,Qingdao 266237,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]烟台大学环境与材料工程学院,烟台264005 [2]中国科学院烟台海岸带研究所,中国科学院海岸带环境过程与生态修复重点实验室,山东省海岸带环境过程重点实验室,海岸带环境工程技术研究与发展中心,烟台264003 [3]山东大学环境科学与工程学院,青岛266237 [4]中国科学院大学,北京100049

出　　处：《分析试验室》2022年第5期569-575,共7页Chinese Journal of Analysis Laboratory

基　　金：山东省大学生创新创业训练项目(S202011066026);烟台市科技发展计划(2020MSGY077);山东省自然科学基金(ZR2020KC032);国家自然科学基金(21876199)资助。

摘　　要：使用多孔聚丙烯膜包覆阳离子表面活性剂十六烷基三甲基氯化铵(CTAC)改性活性炭,制成CTAC改性活性炭聚丙烯信封式膜包,用于吸附去除水中的Cr(Ⅵ),并考察了膜包材料的再生性。采用扫描电镜和红外光谱表征分别对CTAC改性活性炭进行了形貌和结构表征,考察了CTAC改性后国药粉末活性炭膜包在海水、湖水、自来水3种实际水样中的去除效果,去除率为88.5%~97.5%,相对标准偏差为0.25%~1.9%。采用NaOH溶液解吸,膜包在3次重复利用后,对Cr(Ⅵ)的平均去除率可达91.2%,在5次重复利用后,对Cr(Ⅵ)的平均去除率可达65.4%,仍有较好的去除效果。该CTAC改性结合膜包的方法有望为含铬废水治理提供普适性的吸附材料和方法。Cationic surfactant cetyltrimethylammonium chloride(CTAC)modified activated carbon envelopetype membrane was prepared by using porous polypropylene film coated with CTAC and applied for the adsorption and removal of Cr(Ⅵ)in water,as well as the regeneration of membrane-material was studied.Scanning electron microscopy and infrared spectroscopy were employed to characterize the morphology and structure of the CTAC modified activated carbon material. The application effects of CTAC modified Sinopharm powder activated carbon for adsorptive removal of Cr(Ⅵ)from seawater,lake water and tap water samples were investigated. The satisfactory removal rates were obtained of 88.5%-97.5% with the ralative standard deviations(RSDs)of 0.25%-1.9%. By desorption with sodium hydroxide solution,the average removal rate for Cr(Ⅵ)could reach 91.2% after 3 times of reuse. After 5 times of reuse,the average removal rate remained 65.4%,exhibiting a good removal effect. The method of CTAC modified membrane coating was expected to provide universal adsorption material and method for the treatment of chromium in wastewater.

关 键 词：六价铬 CTAC改性活性炭 信封式膜包 吸附去除 再生 

分 类 号：X506[环境科学与工程—环境工程]