« Previous AbstractEvaluation of Workplace Exposures to Volatile Chemicals During COVID-19 Building Disinfection Activities with Proton Transfer Reaction Mass Spectrometry    Next AbstractMetabolic transformation of tritium-labeled pheromone by tissues ofHeliothis virescens moths »

Waste Manag

Title:		Odor removal by and microbial community in the enhanced landfill cover materials containing biochar-added sludge compost under different operating parameters
Author(s):		Ding Y; Xiong J; Zhou B; Wei J; Qian A; Zhang H; Zhu W; Zhu J;
Address:		"Department of Environmental Engineering, Hangzhou Normal University, Hangzhou 310016, PR China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310016, PR China. Electronic address: dingying@hznu.edu.cn. Department of Environmental Engineering, Hangzhou Normal University, Hangzhou 310016, PR China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310016, PR China; Hubei Academy of Environmental Sciences, Wuhan 430070, PR China. Department of Environmental Engineering, Hangzhou Normal University, Hangzhou 310016, PR China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310016, PR China. Department of Biological & Agricultural Engineering, University of Arkansas, AR 72701, USA. Electronic address: junzhu@uark.edu"
Journal Title:		Waste Manag
Year:		2019
Volume:		20190311
Issue:
Page Number:		679 - 690
DOI:		10.1016/j.wasman.2019.03.009
ISSN/ISBN:		1879-2456 (Electronic) 0956-053X (Linking)
Abstract:		"Odor problem has become a growing concern for municipal solid waste (MSW) operators and communities located close to landfill sites. In this study, nine laboratory-scale landfill reactors were used to simulate in-situ odor control by a novel landfill cover material consisting of biochar-added sludge compost under various operating parameters. Characterization of odor removal and microbial community in the cover layer under various operating parameters was conducted using gas chromatograph-mass spectrometry and 454 high-throughput pyrosequencing, respectively. Results showed that H(2)S (76.9-86.0%) and volatile organic sulfur compounds (VOSCs) (12.3-21.7%) were dominant according to their theoretical generated odor concentrations. The total odor REs calculated using the theoretical odor concentrations in the landfill reactors were different than using the measured odor values, which were ranked from high to low as: R6?ª+>?ª+R5?ª+>?ª+R7?ª+>?ª+R4?ª+>?ª+R8?ª+>?ª+R9?ª+>?ª+R3?ª+>?ª+R2?ª+>?ª+R1, showing the largest discrepancy of 25.3%. The optimum combination of operating parameters based on the theoretical odor concentration was different with that based on the measured odor concentrations. Moreover, although Firmicutes (12.21-91.48%), Proteobacteria (3.55-51.03%), and Actinobacteria (4.01-47.39%) were in general the three major bacterial phyla found in the landfill covers, the detailed bacterial communities in the cover materials of the simulated reactors varied with various operating parameters. Alicyclobacillus and Tuberibacillus showed positive correlations with the removal efficiencies (REs) of chlorinated compounds, H(2)S, aromatic compounds, volatile organic sulfur compounds (VOSCs), and organic acids. The correlations of Rhodanobacter, Gemmatimonas, Flavisolibacter and Sphingomonas were strongly positive with ammonia RE and relatively positive with REs of organic acids, VOSCs, and aromatic compounds. These findings are instrumental in understanding the relationship between the structure of microbial communities and odor removal performances, and in developing techniques for in-situ odor control at landfills"
Keywords:		Charcoal *Composting *Microbiota Odorants *Refuse Disposal Sewage Waste Disposal Facilities Canonical correlation analysis High throughput sequencing In-situ odor control Municipal solid waste landfill Theoretical odor concentration;
Notes:		"MedlineDing, Ying Xiong, Junsheng Zhou, Bowei Wei, Jiaojiao Qian, Aiai Zhang, Hangjun Zhu, Weiqin Zhu, Jun eng 2019/05/22 Waste Manag. 2019 Mar 15; 87:679-690. doi: 10.1016/j.wasman.2019.03.009. Epub 2019 Mar 11"