Abstract:
:Food waste anaerobic fermentation was carried out under acidic conditions using inocula based on aerobic activated sludge (Inoculum AE) or anaerobic activated sludge (Inoculum AN) for volatile fatty acids (VFAs) production. The results showed that food waste hydrolysis increased obviously when Inoculum AN was used relative to Inoculum AE at any pH investigated. Hydrolysis at pH 4.0 and uncontrolled pH was higher than that at other pHs when either inoculum was used. Additionally, VFAs production at pH 6.0 was the highest, regardless of the inoculum used. The optimum VFA yields were 0.482g/gVSSremoval with Inoculum AE and 0.918g/gVSSremoval with Inoculum AN, which were observed after 4d and 20d of fermentation, respectively. VFAs composition analysis showed that butyrate acid was the prevalent acid at pH 6.0, followed by acetate acid and propionic acid.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Wang K,Yin J,Shen D,Li Ndoi
10.1016/j.biortech.2014.03.088subject
Has Abstractpub_date
2014-06-01 00:00:00pages
395-401eissn
0960-8524issn
1873-2976pii
S0960-8524(14)00393-9journal_volume
161pub_type
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