Catalytic membranes for the treatment of oily wastewater

Abstract

Abstract Oily wastewater is generated in large amounts by different industry segments, such as food and beverage, oil and gas, cosmetics, and metal processing. Its incorrect disposal causes soil and water contamination, generating environmental and public health problems. In this sense, the use of membranes able to remove the oil present in the wastewater has shown to be a promising technology that can treat a larger range of oily wastewaters than conventional systems without losing the high oil removals. Catalytic membrane processes can combine the separation and catalyzed degradation of the oil, minimizing fouling and increasing the membrane lifespan. Thus, this chapter aims to approach the main aspects of oily wastewater treatment by catalytic membranes, including enzymatic and advanced oxidation processes, as photocatalysis, electrocatalysis, and Fenton-like processes. The chapter is organized in six sections: introduction, oily wastewater, membranes for oily wastewater treatment, catalytic membranes, conclusions, and future trends.