吸附
废水
过滤(数学)
化学工程
纤维素
材料科学
水溶液中的金属离子
柠檬酸
多孔性
饮用水净化
金属
化学
有机化学
复合材料
环境工程
冶金
环境科学
统计
工程类
数学
作者
Shan Jiang,Jianfeng Xi,Hongqi Dai,Weibing Wu,Huining Xiao
标识
DOI:10.1016/j.ijbiomac.2022.03.017
摘要
The rapid and efficient treatment of complex wastewater remains challenging. Herein, green paper-based materials with high wet strength, good oil-water separation property and high heavy metal ion adsorption capacity were prepared via a facile, cost-effective process. The introduction of amphoteric functional groups not only met the requirements for heavy metal ion adsorption, but also maintained the stable underwater superoleophobic properties of materials a wide pH range. The covalent crosslinking between cellulose fibers induced by polyethyleneimine and citric acid significantly improved the wet strength (up to 26.0 Nm/g) and the porosity. The membrane flux was increased up to 3515 L/(m2·h) and the separation efficiencies were higher than 98%. Moreover, the theoretical maximum adsorption capacities for Cd(II) and Pb(II) reached 73.29 and 93.75 mg/g, respectively. Combined with filtration technology, the materials can realize the continuous and efficient purification of complex wastewater.
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