期刊
BIORESOURCE TECHNOLOGY
卷 304, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.122980
关键词
Organic fraction of municipal solid waste (OFMSW); Paper; Food; Volatile fatty acids (VFA); Synergy
资金
- Science and Technology Innovation Major Project of Ningbo City [2108B10023]
- National Key R&D Program of China [2108YFC1902906]
This study explores individual contributions and synergistic effects of food and paper, main components of organic fraction of municipal solid waste (OFMSW) towards volatile fatty acids (VFA) fermentation under different temperatures (25, 37, 42 and 52 degrees C). Thanks to the synergism of food and paper component (FC & PC), the results revealed that OFMSW is suitable for VFA production. Maximum VFA production was noticed to be 21.5 mg/L at 42 degrees C, similar to 2.1, and 1.42 times higher than fermentation of PC and FC. Enhanced hydrolysis of PC occurred at > 37 degrees C, increasing alkalinity in leachate to 6.7 g/L at 42 degrees C, thus maintaining a stable pH (5.4-5.6) during acidogenic fermentation. Additionally, 74% of COD is hydrolyzed, of which 79% is converted to VFA based on biodegradable carbon at 42 degrees C. It is suggested that co-existence of FC and PC can enhance VFA production of OFMSW, and targeted VFA production can be maximized through process optimization.
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