Li, Y;
Jin, Y;
Borrion, A;
Li, H;
Li, J;
(2017)
Effects of organic composition on the anaerobic biodegradability of food waste.
Bioresource Technology
, 243
pp. 836-845.
10.1016/j.biortech.2017.07.028.
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Abstract
This work investigated the influence of carbohydrates, proteins and lipids on the anaerobic digestion of food waste (FW) and the relationship between the parameters characterising digestion. Increasing the concentrations of proteins and lipids, and decreasing carbohydrate content in FW, led to high buffering capacity, reduction of proteins (52.7–65.0%) and lipids (57.4–88.2%), and methane production (385–627 mLCH4/g volatile solid), while achieving a short retention time. There were no significant correlations between the reduction of organics, hydrolysis rate constant (0.25–0.66 d-1) and composition of organics. Principal Component Analysis revealed that lipid, C, and N contents as well as the C/N ratio were the principal components for digestion. In addition, methane yield, the final concentrations of total ammonia nitrogen and free ammonia nitrogen, final pH values, and the reduction of proteins and lipids could be predicted by a second-order polynomial model, in terms of the protein and lipid weight fraction.
| Type: | Article |
|---|---|
| Title: | Effects of organic composition on the anaerobic biodegradability of food waste |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.biortech.2017.07.028 |
| Publisher version: | http://doi.org/10.1016/j.biortech.2017.07.028 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Food waste; Anaerobic digestion; Organic composition; Methane; Statistical analysis |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1563505 |
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