文献类型：期刊文献

英文题名：Superhydrophilic and Superhydrophobic Quartz Sand Hybrid Filters for Efficient On-Demand Oil/Water Separation

作者：Xue, Jinwei[1]; Dai, Pinyi[1]; Liu, Yiqian[1]; Lu, Hao[1]; Yang, Qiang[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230457124)

语种：英文

外文关键词：Chemical stability - Coalescence - Drops - Efficiency - Emulsification - Emulsions - Ostwald ripening - Quartz - Sand

摘要：The development of an efficient and sustainable method for separating oily wastewater has become a major challenge for industrial development and environmental protection. At present, the special wettability materials are prone to contamination and damage in the continuous oil/water separation process. In this work, a simple green special wettability particle preparation method and the hybrid filters construction strategy is reported, which can effectively reduce material pollution and improve oil/water separation efficiency. This strategy uses a small amount of quartz sand as the active site to destroy the balance of dispersed droplets in the oil-water emulsion, induce the coalescence of dispersed droplets, and purify the oil-water emulsion through the tortuous channel. Based on the synergistic effect of "coalescence separation" and "size sieving", the special wettability particle hybrid filter with a mass ratio of 3:1 has good droplet coalescence ability, effectively improves the oil//water separation efficiency, and the separation efficiency of various kinds of oil-water emulsions by hybrid filter can reaches more than 98%. The reported hybrid filters exhibited robust mechanical and chemical stability, excellent durability, which enable them to be competent for oil/water separation in multitasking and complex environment. ? 2023, The Authors. All rights reserved.