Novel Ceramic-Polymer Composite Membranes for the Separation of Hazardous Liquid Waste

Cohen, Yoram

University of California at Los Angeles (United States)

关键词: Colloids;    Microemulsions;    Membranes;    Membrane Transport Ceramic-Polymer;    Liquid Wastes;   

DOI  :  10.2172/791375
RP-ID  :  DOE/ER/14715
RP-ID  :  FG07-96ER14715
RP-ID  :  791375

美国|英语

来源: UNT Digital Library

【 摘 要 】

The present project was conceived to address the need for robust yet selective membranes suitable for operating in harsh ph, solvent, and temperature environments. An important goal of the project was to develop a membrane chemical modification technology that would allow one to tailor-design membranes for targeted separation tasks. The method developed in the present study is based on the process of surface graft polymerization. Using essentially the same base technology of surface modification the research was aimed at demonstrating that improved membranes can be designed for both pervaporation separation and ultrafiltration. In the case of pervaporation, the present study was the first to demonstrate that pervaporation can be achieved with ceramic support membranes modified with an essentially molecular layer of terminally anchored polymer chains. The main advantage of the above approach, relative to other proposed membranes, is that the separating polymer layer is covalently attached to the ceramic support. Therefore, such membranes have a potential use in organic-organic separations where the polymer can swell significantly yet membrane robustness is maintained due to the chemical linkage of the chains to be inorganic support. The above membrane technology was also useful in developing fouling resistant ultrafiltration membranes. The prototype membrane developed in the project was evaluated for the treatment of oil-in-water microemulsions, demonstrating lack of irreversible fouling common with commercial membranes.