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USING IONIC LIQUID MODIFIED ZEOLITE AS A PERMEABLE REACTIVE WALL TO LIMIT ARSENIC CONTAMINATION OF A FRESHWATER LAKE: PILOT TESTS
Liao, L., Z. Li, G. Lv, L. Mei, H. Wang, S. Shi, Y. Wei, X. Wang, P. Ning, and Y. Wei.
Water 10(4):448(2018)

In 2008, severe As contamination was reported in the lake of Yangzonghai, Yunnan, China. After 28 months of restoration, As concentration was maintained at <0.05 mg/L, but discharges from mine tailings at a nearby fertilizer plant continued to contribute to As in the lake. A permeable reactive barrier (PRB) of zeolite was modified by ionic liquids, and the modified materials were installed to contain As migration. Preliminary results showed >80% reduction in As after surface water moved through the PRB over a 6-month sampling period. https://www.mdpi.com/2073-4441/10/4/448/htm



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