期刊论文详细信息
Water
Using Ionic Liquid Modified Zeolite as a Permeable Reactive Wall to Limit Arsenic Contamination of a Freshwater Lake—Pilot Tests
Zhaohui Li1  Lefu Mei1  Xiaoyu Wang1  Yanke Wei1  Libing Liao1  Guocheng Lv1  Yaozu Wei1  Shuliu Shi1  Haijuan Wang2  Ping Ning2 
[1] Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China;Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China;
关键词: arsenic;    ionic liquid;    modification;    permeable reactive wall;    retardation;    zeolite;   
DOI  :  10.3390/w10040448
来源: DOAJ
【 摘 要 】

Arsenic (As) contamination of surface water has long been a threat to human health. Extensive studies were made at the bench-scale for the removal of As from water. Commonly-used materials for the removal of As include Al and Fe hydroxides that will form complexes with As. Recently, modification of Earth materials to reverse their surface charge to positive to reduce the mobility of arsenite and arsenate also attracted great attention. In 2008, a severe As contamination was reported in the lake of Yangzonghai, Yunnan, China. Although the As concentration was maintained below 0.05 mg/L for the lake, after 28 months of restoration, the discharge of mine tailings from a nearby fertilizer plants was still one of the contributors to the As in the lake. In this study, zeolite was modified by ionic liquids and the modified materials were installed as a permeable reactive wall (PRW) to contain the As movement. Preliminary results showed more than an 80% reduction in As after surface water moved through the PWR over the six-month sampling period confirming the effectiveness of ionic liquid-modified Earth materials for environmental application.

【 授权许可】

Unknown   

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