Dennehy, Conor and Lawlor, Peadar G. and Croize, Thomas and Jiang, Yan and Morrison, Liam and Gardiner, Gillian E. and Zhan, Xinmin (2016) Synergism and effect of high initial volatile fatty acid concentrations during food waste and pig manure anaerobic co-digestion. Waste Management, 56. pp. 173-180. ISSN 0956-053X
Full text not available from this repository. (Request a copy)Abstract
Anaerobic co-digestion of food waste (FW) and pig manure (PM) was undertaken in batch mode at 37 °C in order to identify and quantify the synergistic effects of co-digestion on the specific methane yield (SMY) and reaction kinetics. The effects of the high initial volatile fatty acid (VFA) concentrations in PM on synergy observed during co-digestion, and on kinetic modelling were investigated. PM to FW mixing ratios of 1/0, 4/1, 3/2, 2/3, 1/4 and 0/1 (VS basis) were examined. No VFA or ammonia inhibition was observed. The highest SMY of 521 ± 29 ml CH4/gVS was achieved at a PM/FW mixing ratio of 1/4. Synergy in terms of both reaction kinetics and SMY occurred at PM/FW mixing ratios of 3/2, 2/3 and 1/4. Initial VFA concentrations did not explain the synergy observed. Throughout the study the conversion of butyric acid was inhibited. Due to the high initial VFA content of PM, conventional first order and Gompertz models were inappropriate for determining reaction kinetics. A dual pooled first order model was found to provide the best fit for the data generated in this study. The optimal mixing ratio in terms of both reaction kinetics and SMY was found at a PM/FW mixing ratio of 1/4.
| Item Type: | Article |
|---|---|
| Additional Information: | Publisher Copyright: © 2016 Elsevier Ltd |
| Uncontrolled Keywords: | /dk/atira/pure/subjectarea/asjc/2300/2311 |
| Departments or Groups: | |
| Depositing User: | Admin SSL |
| Date Deposited: | 19 Oct 2022 23:09 |
| Last Modified: | 12 Aug 2023 02:00 |
| URI: | http://repository-testing.wit.ie/id/eprint/4333 |
Actions (login required)
 |
View Item |
Altmetric Rosette
Altmetric Rosette