UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Effects of organic composition on the anaerobic biodegradability of food waste

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. Green open access

[img]
Preview
Text
Borrion_BT_Biodegradability_Li et al.pdf - Accepted version

Download (825kB) | Preview

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 > 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
Downloads since deposit
267Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item