| Title: | Emission of volatile sulfur compounds during composting of municipal solid waste (MSW) |
| Author(s): | Zhang H; Schuchardt F; Li G; Yang J; Yang Q; |
| Address: | "Beijing Building Materials Academy of Science Research/State Key Laboratory of Solid Waste Reuse for Building Material, Beijing 100041, China" |
| DOI: | 10.1016/j.wasman.2012.11.008 |
| ISSN/ISBN: | 1879-2456 (Electronic) 0956-053X (Linking) |
| Abstract: | "Volatile sulfur compounds (VSCs) are the main source for malodor from composting plants. In this study, the VSCs generated from composting of 15-80 mm municipal solid waste (T0), kitchen waste (T1) and kitchen waste mixed dry cornstalks (T2) were measured in 60 L reactors with forced aeration for a period of 30 days. The VSCs detected in all treatments were hydrogen sulfide (H2S), methyl mercaptan (MM), dimethyl sulfide (DMS), carbon bisulfide (CS2) and dimethyl disulfide (DMDS). Over 90% of the VSCs emissions occurred during the first 15 days, and reached their peak values at days 4-7. The emission profiles of five VSCs species were significantly correlated with internal materials temperature and outlet O2 concentration (p<0.05). Total emissions of the VSCs were 216.1, 379.3 and 126.0 mg kg(-1) (dry matter) for T0, T1 and T2, respectively. Among the five VSCs, H2S was the most abundant compound with 39.0-43.0% of total VSCs released. Composting of kitchen waste from separate collection posed a negative influence on the VSC and leachate production because of its high moisture content. An addition of dry cornstalks at a mixing ratio of 4:1 (wet weight) could significantly reduce the VSCs emissions and avoid leachate. Compared to pure kitchen waste, VSCs were reduced 66.8%" |
| Keywords: | Biomass *Garbage Oxygen/analysis Refuse Disposal Soil/*chemistry Sulfur Compounds/*analysis Temperature Volatile Organic Compounds/*analysis Zea mays; |
| Notes: | "MedlineZhang, Hongyu Schuchardt, Frank Li, Guoxue Yang, Jinbing Yang, Qingyuan eng Comparative Study Evaluation Study Research Support, Non-U.S. Gov't 2013/01/15 Waste Manag. 2013 Apr; 33(4):957-63. doi: 10.1016/j.wasman.2012.11.008. Epub 2013 Jan 9" |
