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J Environ Sci (China)

Title:		Chemical and olfactive impacts of organic matters on odor emission patterns from the simulated construction and demolition waste landfills
Author(s):		Jiang K; Cheng Z; Lou Z; Wang L; Lu H; Xu B; Jin N;
Address:		"College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China. School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China; School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai 200092, China; Institute for Urban Governance, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: louworld12@sjtu.edu.cn. College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China. Electronic address: wangluochun@shiep.edu.cn. Shanghai Environment Group co., Ltd, Shanghai 200336, China. Shanghai Environmental Sanitation Engineering Design Institute Co., Ltd, Shanghai 200001, China"
Journal Title:		J Environ Sci (China)
Year:		2021
Volume:		20201116
Issue:
Page Number:		196 - 206
DOI:		10.1016/j.jes.2020.10.016
ISSN/ISBN:		1001-0742 (Print) 1001-0742 (Linking)
Abstract:		"The explosive increase of construction and demolition waste (CDW) caused the insufficient source separation and emergency disposal at domestic waste landfills in many developing countries. Some organic fractions were introduced to the CDW landfill process and resulted in serious odor pollution. To comprehensively explore the impacts of organic matters on odor emission patterns, five CDW landfills (OIL), with organic matters/ inert CDW components (O/I) from 5% to 30%, and the control group only with inert components (IL) or organics (OL) were simulated at the laboratory. The chemical and olfactive characters of odors were evaluated using the emission rate of 94 odorants content (ER(total)), theory odor concentration (TOC(total)), and e-nose concentration (ER(ENC)), and their correlations with waste properties were also analyzed. It was found that the main contributors to ER(total) (IL: 93.0% NH(3); OIL: 41.6% sulfides, 31.0% NH(3), 25.9% oxygenated compounds) and TOC(total) (IL: 64.1% CH(3)SH, 28.2% NH(3); OIL: 71.7% CH(3)SH, 24.8% H(2)S) changed significantly. With the rise of O/I, ER(total), TOC(total), and ER(ENC) increased by 10.9, 20.6, and 2.1 times, respectively. And the organics content in CDW should be less than 10% (i.e., DOC<101.3 mg/L). The good regressions between waste properties (DOC, DN, pH) and ER(ENC-) (r=0.86, 0.86, -0.88, p<0.05), TOC(total-) (r=0.82, 0.79, -0.82, p<0.05) implied that the carbon sources and acidic substances relating to organics degradation might result in that increase. Besides, the correlation analysis results (ER(ENC-)vs.TOC(total-), r=0.96, p<0.01; vs.ER(total-), r=0.86, p<0.05) indicated that e-nose perhaps was a reliable odor continuous monitoring tool for CDW landfills"
Keywords:		*Air Pollutants/analysis Odorants/analysis *Refuse Disposal Waste Disposal Facilities Construction and demolition waste landfills Emission rate Organic matters Theory odor concentration Volatile odor compounds;
Notes:		"MedlineJiang, Kunyu Cheng, Zhaowen Lou, Ziyang Wang, Luochun Lu, Hailin Xu, Bijun Jin, Ningben eng Netherlands 2021/03/22 J Environ Sci (China). 2021 May; 103:196-206. doi: 10.1016/j.jes.2020.10.016. Epub 2020 Nov 16"