Comparison of the co-gasification of sewage sludge and food wastes and cost-benefit analysis of gasification- and incineration-based waste treatment schemes

You, S. , Wang, W., Dai, Y., Tong, Y. W. and Wang, C.-H. (2016) Comparison of the co-gasification of sewage sludge and food wastes and cost-benefit analysis of gasification- and incineration-based waste treatment schemes. Bioresource Technology, 218, pp. 595-605. (doi:10.1016/j.biortech.2016.07.017)

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Abstract

The compositions of food wastes and their co-gasification producer gas were compared with the existing data of sewage sludge. Results showed that food wastes are more favorable than sewage sludge for co-gasification based on residue generation and energy output. Two decentralized gasification-based schemes were proposed to dispose of the sewage sludge and food wastes in Singapore. Monte Carlo simulation-based cost-benefit analysis was conducted to compare the proposed schemes with the existing incineration-based scheme. It was found that the gasification-based schemes are financially superior to the incineration-based scheme based on the data of net present value (NPV), benefit-cost ratio (BCR), and internal rate of return (IRR). Sensitivity analysis was conducted to suggest effective measures to improve the economics of the schemes.

Item Type:Articles
Additional Information:This research program is funded by the National Research Foundation (NRF), Prime Minister’s Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) program. Grant Number R-706-001-101-281, National University of Singapore.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:You, Dr Siming
Authors: You, S., Wang, W., Dai, Y., Tong, Y. W., and Wang, C.-H.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Bioresource Technology
Publisher:Elsevier
ISSN:0960-8524
ISSN (Online):1873-2976
Published Online:07 July 2016
Copyright Holders:Copyright © 2016 Elsevier Ltd.
First Published:First published in Bioresource Technology 218: 595-605
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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