膜科学与技术

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Removing water from water-in-oil emulsions using hydrophobic ceramic membranes

Authors： LI Mei, GAO Nengwen, FAN Yiqun

Units： State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China

KeyWords： water removal; ceramic membrane; hydrophobic surface；membrane separation

ClassificationCode：TQ028.8; TQ028.4

year,volume(issue):pagination： 2012,32(3):86-90

Abstract：

Hydrophobic ceramic membranes with the average pore size of 50 nm were employed to remove water from water-in-oil emulsions, in which isooctane and distilled water were selected as continuous and dispersed phase, respectively. The effects of transmembrane pressure, crossflow velocity and feed water content on permeate flux and water rejection were systematically investigated. Either increasing the transmembrane pressure or decreasing the feed water content could improve the permeate flux, and with the increase of crossflow velocity, the permeate flux initially raised and then decreased. The optimal operating conditions were obtained with transmembrane pressure of 0.1 MPa and crossflow velocity of 1.67 m/s, and the water rejection was stable and as high as more than 98%. It was found that, the water content in the permeate changed little with the operating conditions, owing to the hydrophobic surface of the ceramic membrane.

Funds：

国家自然科学基金(No.20776067); 江苏省科技支撑计划(No.BE2009677)

AuthorIntro：

李梅(1986-), 女, 江苏南通人, 硕士, 研究方向为膜分离. 通讯联系人, E-mail: yiqunfan@njut.edu.cn

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