摘要
由于生活和工业生产的含油废水、污水不断增多,海上原油泄漏事故频繁发生,处理污染水体的油水混合物迫在眉睫。膜分离技术可实现工业级别的油水分离要求,现已成为油水分离领域的研究热点。以十八烷基三氯硅烷(OTS)作为表面改性剂,在建立两层海藻酸钠(SA)涂层的亲水聚酰胺微滤膜上进行界面聚合改性反应,从而制备亲水-疏水双面Janus膜。通过AFM、接触角、XPS等进行膜表面形貌、化学结构表征,并将膜应用于油水分离截留实验。结果表明:SA涂层具有较强锁水性,可促进表面改性均匀。OTS表面改性达到接触角大于150°超疏水标准,改性膜对不同油水乳液截留率达到99%以上。
Due to the increase of oil-containing wastewater and sewage in domestic and industrial production,frequent occurrence of offshore crude oil leakage accidents,it is urgent to treat oil-water mixture in polluted water bodies.Membrane separation technology can realize the requirements of industrial-level oil and water separation and has become a research hotspot in the field of oil and water separation.In this paper,octadecyltrichlosilane(OTS)was used as a surface modifier to perform interfacial polymerization modification on a hydrophilic polyamide microfiltration membrane with two layers of sodium alginate(SA)coating,to prepare a hydrophilic and hydrophobic double-sided Janus membrane.The surface morphology and chemical structure of the membrane were characterized by AFM,contact angle,XPS,etc.,and the membrane was applied to the oil-water separation and retention experiment.The results showed that SA coating had strong water-locking properties and could promote uniform surface modification.The surface modification of OTS reached the super hydrophobic standard with contact angle greater than 150°,and the retention rate of the modified film for different oil-water emulsions wasmore than 99%.
作者
李增强
岩征
桂召龙
刘新亮
王明
LI Zengqiang;YAN Zheng;GUI Zhaolong;LIU Xinliang;WANG Ming(Sinopec Shengli Oilfield BranchSafety and Environmental Quality Management Department,Dongying Shandong 257000,China;Sinopec Petroleum Engineering Design Co.,Ltd.,Dongying Shandong 257000,China;Advanced Chemical Engineering and Energy Materials Research Center,China University of Petroleum(East China),Qingdao Shandong 266580,China;State Key Laboratory of Heavy Oil Processing,China University of Petroleum(East China),Qingdao Shandong 266580,China)
出处
《当代化工》
2025年第1期9-15,共7页
Contemporary Chemical Industry
基金
国家自然科学基金项目(项目编号:21908247)。
关键词
Janus膜
十八烷基三氯硅烷
疏水改性
油水分离
Janus membrane
Octadecyltrichlorosilane
Hydrophobic modification
Oil-water separation
