Non-Fouling Ceramic Membranes for Treatment of Metastable Oil/Water Emulsions

*希金斯9501443这一小型企业创新研究第二阶段项目旨在开发更好的方法，通过陶瓷横流过滤处理稳定性较差的(亚稳定)油/水乳状液，膜具有高度抗污染和相对较低的相关成本。该计划的总体目标包括：(A)更全面和更基本地了解生产废水和类似进料流的横流过滤所固有的膜污染过程，以及它们对奶油膜性能的依赖，以及(B)开发高抗污染的低成本陶瓷组件上的膜。实验工作将包括修改和优化第一阶段工作中发现的膜制造方法，对活的和模拟的油/水乳状液进行膜的长期横流过程测试，以及对制成的膜、污染的膜和主要污染物进行彻底的物理和化学表征。预计，除了在亚稳态油/水乳液处理过程中具有高度抗污染能力的商业可行的陶瓷膜外，该项目还将产生与膜污染机理及其与陶瓷膜特性的关系相关的有用知识。该计划将开发的高度耐污染的膜将很容易扩展到工业规模的低成本陶瓷模块，并将在亚稳态油/水乳状液分离的经济性和有效性方面提供显著的好处。这些分离器可以通过大量的废水，如油井产生的污水、原油洗涤产生的脱盐底水、船上的舱底和油罐清洗废物、车辆洗涤水等。关键词：陶瓷膜、油/水乳液、耐污染膜*p：/SBIR/yhashimi/9501443a.doc

*** Higgins 9501443 This Small Business Innovation Research Phase II project is aimed towards the development of improved methods of treating poorly stabilized (metastable) oil/water emulsions via ceramic crossflow filtration with membranes that are highly resistant to fouling and that have relatively low associated costs. The overall objectives of this program include: (a) development of a more comprehensive and fundamental understanding of membrane fouling processes inherent to crossflow filtration of produced waters and similar feed streams, and their dependence on creamic membrane properties, and (b) development of membranes on low-cost ceramic modules that are highly fouling-resistant. Experimental work will encompass modification and optimization of membrane fabrication approaches scouted in Phase I work, long-term crossflow process testing of membranes on both live and simulated oil/water emulsion streams, and thorough physical and chemical characterization of as-fabricated membranes, fouled membranes, and predominant foulant species. It is anticipated that useful knowledge related to membrane fouling mechanisms and their relationship with ceramic membrane characteristics will result from this program, in addition to commercially viable ceramic membranes that are highly fouling-resistant during metastable oil/water emulsion processing. The highly fouling-resistant membranes to be developed in this program will be readily scalable to industrial-scale low-cost ceramic modules, and should provide significant benefits in both the economy and effectiveness of metastable oil/water emulsion separations. These separations ecompass a wide range of very high volume wastewaters such as produced water from oil wells, desalter bottoms from crude oil washing, shipboard bilge and tank cleaning wastes, vehicle washwaters, and others. Keywords: ceramic membranes, oil/water emulsions, fouling-resistant membranes *** p:/sbir/yhashimi/9501443a.doc