Enhanced volatile fatty acid production from waste activated sludge by urea hydrogen peroxide: performance and mechanisms

Abstract

Urea hydrogen peroxide pretreatment promoted the production of volatile fatty acids during anaerobic fermentation by enhancing the hydrolysis of waste activated sludge.

Enhancing the Production of Volatile Fatty Acids by Potassium Permanganate from Wasted Sewage Sludge: A Batch Test Experiment

“…As the tests follow, a more acidic environment would promote the acidogenic step thus overall enhancing the whole process yield [18,19]. Recently, Wang et al [20] applied urea hydrogen peroxide (UHP) pretreatment on sludge acidogenic fermentation. UHP effect and mechanisms are comparable to those reported for KMnO 4 : the established alkaline conditions, coupled with the free radicals generated, disrupted the organics in the sludge, thus increasing VFAs production up to 8800.9 mg COD L − 1 .…”