| Title: | Differential Effect of Anaerobic Digestion on Gaseous Products from Sequential Pyrolysis of Three Organic Solid Wastes |
| Author(s): | Zou L; Song L; Li M; Wang X; Huang X; Zhang Y; Dong B; Zhou J; Li X; |
| Address: | "School of Environmental and Chemical Engineering, Key Laboratory of Organic Compound Pollution Control, Ministry of Education, Shanghai University, Shanghai 200444, China. College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. School of Civil and Environmental Engineering, University of Technology Sydney, 15 Broadway, Sydney, NSW 2007, Australia" |
| ISSN/ISBN: | 2470-1343 (Electronic) 2470-1343 (Linking) |
| Abstract: | "Studies have shown that anaerobic digestion (AD) has an effect on the liquid and solid product property of sequential pyrolysis, but its influence on the gaseous products is lacking. In this study, syngas produced by pyrolysis from three raw organic solid wastes and the corresponding digestates, i.e., food waste, vinasse, and cow manure were investigated. AD causes a decrease in the contents of volatile solid, fixed carbon, C, H, and N and an increase in the S content. The weight loss of the wastes mainly occurs at 200-550 degrees C during the pyrolysis and the loss of the food waste and vinasse is higher than that of cow manure. In the carbon (C)-containing gas, AD leads to a decrease in the CH(4) content of the syngas, implying that the heat values of the digestates are lower than that of the raw substrates. After AD, the total amount of nitrogen (N)-containing gas from the vinasse increases by 40.1%, while that from cow manure decreases by 14.1%. On the contrary, the total amount of sulfur (S)-containing groups in the syngas from vinasse drop by 22.0%, while that from cow manure increases by 9.1%. In addition, slight changes in the C-, N-, and S-containing gases are found from food waste. The results indicate that AD has a different effect on the N- and S- containing gaseous groups from different organic solid wastes, and the mechanisms deserve further investigation. The findings supply a theoretical foundation for environmental-friendly application of syngas from the digestates" |
| Notes: | "PubMed-not-MEDLINEZou, Lianpei Song, Lin Li, Man Wang, Xuan Huang, Xiang Zhang, Yaning Dong, Bin Zhou, John Li, Xiaowei eng 2021/09/10 ACS Omega. 2021 Aug 19; 6(34):22103-22113. doi: 10.1021/acsomega.1c02678. eCollection 2021 Aug 31" |
