Effect of substrate sulfur state on MM and DMS emissions in landfill. (October 2020)

• Record Type: Journal Article
• Authors: Jin, Zhiyuan; Zhang, Siyuan; Hu, Lifang; Fang, Chengran; Shen, Dongsheng; Long, Yuyang
• Is Part Of: Waste management. Volume 116(2020)
• Page Start: 112
• Page End: 119
• Publication Date: 2020-10
• Subjects: Landfill -- Odor -- Methyl mercaptan -- Dimethyl sulfide -- Contribution rate; Hazardous wastes -- Periodicals; Refuse and refuse disposal -- Periodicals; 363.728
• DOI: 10.1016/j.wasman.2020.08.005
• Languages: English
• ISSNs: 0956-053X

Abstract

Graphical abstract: Highlights: Both inorganic and organic sulfur could generate MM and DMS in landfill. Magnitude difference existed in DMS emission from inorganic and organic sulfur. Inorganic sulfur generated more MM than DMS. Abstract: Methyl mercaptan (MM) and dimethyl sulfide (DMS) are typical landfill odorous gases that have received little attention compared with hydrogen sulfide (H2 S). In this study, landfill MM and DMS emissions were investigated regarding their origin from substrates with different sulfur states, namely, intrinsic organic sulfur and external inorganic sulfur (SO4 2− ). Substrates with high protein contents showed the highest potential for MM and DMS emissions, at 46.0 and 9.2 μL·g −1 substrate, respectively. Meanwhile, a comparable contribution by SO4 2− was achieved when the SO4 2− content comprised over 40% of the substrate. The substrate contribution to DMS emission was up to 10 times the SO4 2− contribution. Meanwhile, the SO4 2− contribution to MM emission was over 1000 times that to DMS emissions. MM and DMS can accumulate in landfill sites and then be transformed into H2 S or sulfide (S 2− ). This research offers a comprehensive understanding of MM and DMS emissions in landfill and provides a basis for classification management methods in landfill sites.