Developing novel biorefineries using food waste as substrate
Paper
Paper/Presentation Title | Developing novel biorefineries using food waste as substrate |
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Presentation Type | Paper |
Authors | Kiran, Esra Uckun (Author), Trzcinski, Antoine P. (Author) and Liu, Yu (Author) |
Journal or Proceedings Title | Proceedings of the 248th ACS National Meeting & Exposition 2014 |
Year | 2014 |
Web Address (URL) of Paper | http://acselb-529643017.us-west-2.elb.amazonaws.com/chem/248nm/program/view.php?obj_id=257400&terms= |
Conference/Event | 248th American Chemical Society National Meeting & Exposition |
Event Details | 248th American Chemical Society National Meeting & Exposition Event Date 10 to end of 14 Aug 2014 Event Location San Francisco, California |
Abstract | Introduction - One third of food produced globally for human consumption is lost along the food supply chain1. In Asia, food waste is often landfilled or incinerated with other combustible municipal wastes for possible recovery of heat or other forms of energy. However, incineration is an expensive waste conversion technique and causes air pollution. In fact, due to its nutrients-rich composition food waste is a useful resource for production of energy and high-value platform chemicals through fermentation. Starch is the main biopolymer in food waste2, thus the saccharification of food waste is the most important step for its bioconversion into value-added products. The objective of this study is to maximize glucose yield from food waste enzymatically. Commercial enzyme utilization increases the operational cost due to the purchase of these enzymes on a regular basis. In order to decrease the costs, enzyme solution was produced by solid state fermentation using food wastes as sole nutrient source. Results and Discussion - In situ produced enzyme (ISPE) provided higher glucose yields in comparison to commercial enzymes, in shorter time and without any liquefaction step. Glucose concentration using ISPE reached 97 g/L after 8h hydrolysis. The enzymatic hydrolysis of food waste resulted in 51-62% solids reduction. The effect of enzymatic pretreatments on methane production potential was also tested. The lag phase was shorter using enzymatically pretreated food wastes. The cumulative methane yield improved by 36 and 39% using the commercial and in-situ enzymes, respectively. Conclusions - In conclusion, food waste can be saccharified using ISPE effectively. The glucose concentration and the saccharification degree obtained during the hydrolysis are sufficient enough to produce various kinds of biofuels and high-value platform chemicals. The utilization of food waste in an integrated biorefinery approach will provide an economical and sustainable waste management system in long term. |
ANZSRC Field of Research 2020 | 400402. Chemical and thermal processes in energy and combustion |
410404. Environmental management | |
401102. Environmentally sustainable engineering | |
Public Notes | Abstract only published online. |
Byline Affiliations | Nanyang Technological University, Singapore |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4w17/developing-novel-biorefineries-using-food-waste-as-substrate
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