Enhancing the hydrolysis and methane production potential of mixed food waste by an effective enzymatic pretreatment

Kiran, Esra Uckun and Trzcinski, Antoine P. and Liu, Yu (2015) Enhancing the hydrolysis and methane production potential of mixed food waste by an effective enzymatic pretreatment. Bioresource Technology, 183. pp. 47-52. ISSN 0960-8524

Abstract

In this study, a fungal mash rich in hydrolytic enzymes was produced by solid state fermentation (SSF) of waste cake in a simple and efficient manner and was further applied for high-efficiency hydrolysis of mixed food wastes (FW). The enzymatic pretreatment of FW with this fungal mash resulted in 89.1 g/L glucose, 2.4 g/L free amino nitrogen, 165 g/L soluble chemical oxygen demand (SCOD) and 64% reduction in volatile solids within 24 h. The biomethane yield and production rate from FW pretreated with the fungal mash were found to be respectively about 2.3 and 3.5-times higher than without pretreatment. After anaerobic digestion of pretreated FW, a volatile solids removal of 80.4 ± 3.5% was achieved. The pretreatment of mixed FW with the fungal mash produced in this study is a promising option for enhancing anaerobic digestion of FW in terms of energy recovery and volume reduction.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 25 May 2016 04:52
Last Modified: 01 Aug 2016 01:52
Uncontrolled Keywords: food waste; fungal mash; enzymatic pretreatment; solid state fermentation; anaerobic digestion
Fields of Research : 05 Environmental Sciences > 0502 Environmental Science and Management > 050205 Environmental Management
Identification Number or DOI: 10.1016/j.biortech.2015.02.033
URI: http://eprints.usq.edu.au/id/eprint/28557

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