An effective process for removing organic compounds from oily sludge using soluble metallic salt

This study evaluates the application of wet oxidation for the treatment of oily sludge by using hydrogen peroxide as oxidant instead of air at high temperature in a batch reactor. The experimental results show that the quantity of oxidant with 250% to theoretical oxygen demand of oily sludge is comparatively effective and economical. Adding a catalyst, Fe3+, significantly improved the COD removal. Reaction mechanism for WO of oily sludge is analyzed. Oxidation of intermediate for oily sludge is a rate-limiting step for further oxidation of oily sludge. Crown Copyright (C) 2012 Published by Elsevier B.V. on behalf of The Korean Society of Industrial and Engineering Chemistry. All rights reserved.