蒸发器
废水
海水
乳状液
乙烯醇
饮用水净化
絮凝作用
污水
材料科学
污水处理
制浆造纸工业
废物管理
环境科学
化学工程
化学
环境工程
工程类
聚合物
有机化学
热交换器
复合材料
地质学
物理
海洋学
热力学
作者
Wei Yao,Jian Tan,Xiaodong Zhu,Guanglei Liu,Zhenglong Xu,Mingxin Ye,Jianfeng Shen
标识
DOI:10.1016/j.xcrp.2022.101020
摘要
Wastewater containing organic pollutants, such as emulsion, soluble organic sewage, oily seawater, and acid/alkali corrosive sewage, poses a grand challenge to the existing membrane separation technology for obtaining freshwater. Inspired by leaf structure, here we report a carbon felt/poly(vinyl alcohol) (PVA) solar-driven device to separate versatile oily wastewater. This evaporator exhibits superior full-spectrum solar energy absorption (88%) and steady vapor release capacity (1.3–1.4 kg m−2 h−1) under 1.0 sun irradiation. The carbon felt/PVA foam with strong underwater superoleophobicity cannot only achieve efficient separation of oil-in-water but also purify extra high oil/water ratio emulsion directly with high efficiency of 99.99%. It is noteworthy, for seawater-emulsion and water-soluble organic sewage, that the purification efficiency of carbon felt/PVA foam can exceed 99.86%. More importantly, strong acid and alkali water do not affect the operation of carbon felt/PVA foam. This work provides a feasible method to purify versatile wastewater in a harsh environment.
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