期刊
BIORESOURCE TECHNOLOGY
卷 299, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.122629
关键词
Wood waste; Sewage; Volatile fatty acids; Polyhydroxyalkanoate; Microbial community
资金
- Tianjin Natural Science Foundation [18JCYBJC90100]
- National Natural Science Foundation of China [31870564, 31270607, 30901133]
- Innovation Project of Excellent Doctorial Dissertation of Tianjin University of Science and Technology [2019008]
Production of polyhydroxyalkanoate (PHA) via mixed microbial consortia is a potential economic alternative responding to the current demand for functional greener materials to replace traditional petroleum-based polymers. The goal of this study was to synthesize PHA using volatile fatty acids (VFAs) obtained from the co-fermentation of pretreated wood waste and sewage as carbon source. High PHA yield of 0.71 g COD PHA/g COD VFAs and PHA content of 50.3 g PHA/100 g VSS were obtained at VFAs ratio (even:odd) of 88:12 after seven cycles cultivation. Even acids were more suitable for accumulating PHA as the preferred carbon source than odd acids, resulting in 3-hydroxybutyrate being the main monomer. PHA production achieved to the highest value of about 2639 mg COD/L at 1400 mg COD/L VFAs concentration. The bacterial genera displayed a highly diverse of the microbial community for the synthesis of PHA.
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