Anaerobic digestion and biogas potential: simulation of lab and industrial-scale processes

Hamawand, Ihsan and Baillie, Craig (2015) Anaerobic digestion and biogas potential: simulation of lab and industrial-scale processes. Energies, 8 (1). pp. 454-474.

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Abstract

In this study, simulation was carried out using BioWin to test the capability of the software in predicting biogas potential for two different anaerobic systems. The two scenarios included; 1) a laboratory scale batch reactor and 2) an industrial scale anaerobic continuous lagoon digester. Measured data relating to operating conditions, reactor design parameters, and chemical properties of influent wastewater were entered into BioWin. A sensitivity analysis was carried out to identify the sensitivity of the most important default parameters in the software's models. BioWin was then calibrated by matching the predicted data with measured data and used to simulate other parameters which were unmeasured or deemed uncertain. In addition, statistical analyses were carried out using evaluation indices such as coefficient of determination (R-squared), correlation coefficient (r) and its significance (P value), general standard deviation (SD) and Willmott index of agreement to evaluate the agreement between the software prediction and the measured data. The results have shown that after calibration, BioWin can be used reliably to simulating both small scale batch reactors and industrial scale digesters with an absolute relative error less than 10% and very good indexes' values. Also, by changing the default parameters in BioWin, which is a way of calibrating the models in the software as well, it may provide information about the performance of the digester. Furthermore, the results of this study showed there may be an over estimation for biogas generated from industrial scale digesters. More sophisticated analytical devices may be required for reliable measurements of biogas quality and quantity.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source. Made available through Creative Commons Attribution License.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - No Department
Date Deposited: 09 Feb 2015 07:00
Last Modified: 15 Sep 2016 06:12
Uncontrolled Keywords: wastewater; anaerobic digestion; biogas; BioWin; meat industry; simulation
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090403 Chemical Engineering Design
09 Engineering > 0904 Chemical Engineering > 090405 Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
09 Engineering > 0904 Chemical Engineering > 090409 Wastewater Treatment Processes
Socio-Economic Objective: B Economic Development > 85 Energy > 8503 Preparation and Production of Energy Sources > 850309 Production of Biofuels (Biomass)
Identification Number or DOI: 10.3390/en8010454
URI: http://eprints.usq.edu.au/id/eprint/26616

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