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Bioresour Technol

Title:		Mitigating inhibition of undissociated volatile fatty acids (VFAs) for enhanced sludge-rice bran composting with ferric nitrate amendment
Author(s):		Shou Z; Yuan H; Shen Y; Liang J; Zhu N; Gu L;
Address:		"School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China. School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China. Electronic address: nwzhu@sjtu.edu.cn. School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China"
Journal Title:		Bioresour Technol
Year:		2017
Volume:		20170805
Issue:		Pt 1
Page Number:		672 - 678
DOI:		10.1016/j.biortech.2017.08.017
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"This study investigated the effect of ferric nitrate on mitigating the inhibition of volatile fatty acids (VFAs) during the initial phase of sewage sludge composting amended with rice bran. During the 34-day lab-scale composting, the supplementation of ferric nitrate enhanced the degradation of VFAs by up to 3 times as compared to the control. The organic matters loss (OML) rate in the treatment reactor was almost doubled with supplementation of ferric nitrate as compared to the control reactor during the initial phase. Eventually the treatment reactor achieved a 39.0% OML by the end of composting, which was 22% higher than the control. Ferric nitration addition mitigated the inhibition of VFAs by stimulating denitrification which consumed protons and VFAs. Ferric nitrate addition also decreased the electrical conductivity by 23% in the final compost product, reducing the possibility of phytotoxicity issue upon soil application. In summary, the results demonstrated that ferric nitrate addition could be an effective strategy for enhanced sludge composting"
Keywords:		"*Fatty Acids, Volatile Ferric Compounds Nitrates Oryza *Sewage Composting Denitrification Ferric nitrate Sewage sludge Volatile fatty acids disinhibition;"
Notes:		"MedlineShou, Zongqi Yuan, Haiping Shen, Yanwen Liang, Jiayun Zhu, Nanwen Gu, Lin eng England 2017/08/19 Bioresour Technol. 2017 Nov; 244(Pt 1):672-678. doi: 10.1016/j.biortech.2017.08.017. Epub 2017 Aug 5"