Determination of the hydrolysis constant in the biochemical methane potential test of municipal solid waste
Article
Article Title | Determination of the hydrolysis constant in the biochemical methane potential test of municipal solid waste |
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ERA Journal ID | 4671 |
Article Category | Article |
Authors | Trzcinski, Antoine P. (Author) and Stuckey, David C. (Author) |
Journal Title | Environmental Engineering Science |
Journal Citation | 29 (9), pp. 848-854 |
Number of Pages | 7 |
Year | 2012 |
Place of Publication | United States |
ISSN | 1092-8758 |
1557-9018 | |
Digital Object Identifier (DOI) | https://doi.org/10.1089/ees.2011.0105 |
Web Address (URL) | http://online.liebertpub.com/toc/ees/29/9 |
Abstract | This article provides the methane yield of municipal solid waste and its main constituents using the biochemical ethane potential (BMP) test. The methane yield of kitchen waste (KW), paper waste (PW), and garden waste (GW) were 357 ( – 24.7), 147 ( – 17.1), and 114 ( – 0.6) mL CH4/g VS, respectively. The hydrolysis constant in the first order kinetic model was 0.25, 0.095, and 0.121 d- 1 for KW, PW, and GW, respectively. The effect of the inoculum to substrate (I/S) ratio in the BMP test was investigated. Methane yields of 297.4 ( – 18.6), 293.5 ( – 33.9), and 378.2 ( – 10.3) mL CH4/g VS were found at I/S ratios of 1.4, 7.2, and 12.9, respectively, whereas the hydrolysis constants were 0.112, 0.151, and 0.221 d- 1. A new method based on the production of soluble chemical oxygen demand (SCOD) while selectively inhibiting methanogenesis has been used to determine the hydrolysis constant (0.25 d- 1) according to its true definition, which is the conversion of particulate COD to SCOD, showing that the method based on methane evolution can underestimate the actual value when hydrolysis is not the rate-limiting step. |
Keywords | anaerobic digestion; hydrolysis constant; municipal solid waste; inoculum to substrate (I/S) ratio |
ANZSRC Field of Research 2020 | 410404. Environmental management |
401102. Environmentally sustainable engineering | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Imperial College London, United Kingdom |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3643/determination-of-the-hydrolysis-constant-in-the-biochemical-methane-potential-test-of-municipal-solid-waste
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