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Sci Total Environ

Title:		Co-treatment of potassium ferrate and peroxymonosulfate enhances the decomposition of the cotton straw and cow manure mixture
Author(s):		Wang J; Cui H; Xie G; Liu B; Cao G; Xing D;
Address:		"State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China. State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China. Electronic address: dxing@hit.edu.cn"
Journal Title:		Sci Total Environ
Year:		2020
Volume:		20200330
Issue:
Page Number:		138321 -
DOI:		10.1016/j.scitotenv.2020.138321
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"Since there is high lignocellulose content in the cotton straw and cow manure mixture (MCC), the appropriate MCC pretreatment is important to promote the anaerobic digestion (AD) hydrolysis. This study mainly explored the effect of potassium ferrate (PF) and peroxymonosulfate (PMS) pretreatments on MCC decomposition. PMS + PF co-treatment showed a higher reduction of total solid and volatile solid than PF pretreatment and PMS pretreatment. Hydrolysis of treated MCC indicated that the PF pretreatment was more effective to the release of organics than the PMS pretreatment and the PMS + PF co-treatment. However, the PMS + PF co-treatment resulted in a higher lignin removal rate (40.4%-50.5%) than the PMS pretreatment (30.8%) and the PF pretreatment (21.4%). The PMS(1) + PF(2) co-treatment (molar ratio of 1:2) acquired the optimal lignin removal rate and the release of organics among the PMS + PF co-treatment with different dosing ratio. Potential mechanism was that PF reduction products activated PMS to produce free radicals (SO(4)(-), OH), which attacked lignocellulosic components and promoted MCC decomposition. The PMS(1) + PF(2) co-treatment was deduced to be the optimal pretreatment method when considering MCC decomposition, biodegradability, and mass transfer in the bioreactor"
Keywords:		Animals Cattle Female *Iron Compounds *Manure Peroxides Potassium Compounds Advanced oxidation processes Anaerobic digestion Biodegradability Delignification Mass transfer Pretreatment;
Notes:		"MedlineWang, Jing Cui, Han Xie, Guojun Liu, Bingfeng Cao, Guangli Xing, Defeng eng Netherlands 2020/05/16 Sci Total Environ. 2020 Jul 1; 724:138321. doi: 10.1016/j.scitotenv.2020.138321. Epub 2020 Mar 30"