Abstract：
:Direct interspecies electron transfer (DIET) was considered to replace interspecies H2 transfer to enhance syntrophic metabolism during the anaerobic digestion. The graphite felt with excellent electrical conductivity was added into a semi-continuous reactor as a conductive material, strengthening DIET in enhancing the degradation of propionate and butyrate. The final average CH4 production rate increased by 19.1% and 16.7%, respectively, during the propionate and butyrate degradation. Microbial community analysis revealed that the relative abundance of the microflora that could participate in DIET, like Geobacter, Methanosaeta and Methanosarcina species, was greatly improved in the presence of graphite felt. Further experiments showed that the high H2 partial pressure had no obvious effect on the degradation of propionate and butyrate in the graphite felt-supplement reactors.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Zhang M,Ma Y,Ji D,Li X,Zhang J,Zang Ldoi
10.1016/j.biortech.2019.121373subject
Has Abstractpub_date
2019-09-01 00:00:00pages
121373eissn
0960-8524issn
1873-2976pii
S0960-8524(19)30603-0journal_volume
287pub_type
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