Experimental Study on the Supercritical Water Co-Oxidation of Municiple Sludge with Methanol

Abstract:

The influence of methanol on the sludge removal rate of COD was investigated and the mechanism was obtained. The results show that the adding of methanol solution can improve the sludge COD removal rate, when the mass fraction of methanol is 5%, COD removal rate can be highly 99.98% compared 98.26% of that without methanol. The mechanism of co-oxidation is that methanol oxidation process can produce free radicals HO· and HO₂·, they attack intermediate phenol and acetic acid, promote acetic acid to C-C bond fracture and ring-opening of phenol.

• Periodical: Applied Mechanics and Materials (Volumes 651-653)
• Pages: 1341-1344
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.651-653.1341
• Online since: September 2014
• Authors: Sheng Wen, Shu Zhong Wang, Yan Hui Li, Yu Zhen Wang
• Keywords: COD Removal Rate, Co-Oxidation Mechanism, Municiple Sludge, Supercritical Water Oxidation

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