Distribution and modeling of tar compounds produced during downdraft gasification of municipal solid waste
Tar compounds produced during gasification of municipal solid waste (MSW) hinder downstream utilization of syngas. This study investigated the effects of operating conditions (temperature, equivalence air ratio (ER) and MSW moisture content) during gasification using air on tar emissions. Tar was qu...
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sg-ntu-dr.10356-1512812021-06-15T04:05:43Z Distribution and modeling of tar compounds produced during downdraft gasification of municipal solid waste Veksha, Andrei Giannis, Apostolos Yuan, Guoan Tng, Jiahui Chan, Wei Ping Chang, Victor Wei-Chung Lisak, Grzegorz Lim, Teik-Thye School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Residues and Resource Reclamation Centre Engineering::Environmental engineering Gasification Municipal Solid Waste Tar compounds produced during gasification of municipal solid waste (MSW) hinder downstream utilization of syngas. This study investigated the effects of operating conditions (temperature, equivalence air ratio (ER) and MSW moisture content) during gasification using air on tar emissions. Tar was quantified by gravimetric and GC-MS methods, denoted as gravimetric and collected (GC-MS) tar, respectively. Additionally, styrene evolution was studied as it is one of the main tar compounds produced from MSW. By applying the response surface methodology for modeling, it was found that tar contents quantified by the two methods are influenced similarly by ER and MSW moisture content, but differently by temperature. This discrepancy was attributed to the different composition and properties of tar fractions measured by gravimetric and GC-MS methods. Since the selection of analytical method can have impact on the quantification of tar, adoption of different methods for the characterization of tar emissions from MSW gasifiers is essential in order to provide a holistic analysis of the tar evolution process. The content of styrene in collected (GC-MS) tar from MSW gasification was 13–29%. The lower contents of styrene were favored by operating temperature between 850 and 900 °C, higher ER and higher MSW moisture content. Economic Development Board (EDB) Ministry of the Environment and Water Resources Nanyang Technological University National Environmental Agency (NEA) National Research Foundation (NRF) This research is supported by the National Research Foundation, Prime Minister's Office and the National Environment Agency, Ministry of the Environment and Water Resources, Singapore under the Waste-to-Energy Competitive Research Programme (WTE CRP 1501 105). The authors also acknowledge Nanyang Environment and Water Research Institute at Nanyang Technological University, Singapore and Economic Development Board, Singapore for the support. 2021-06-15T04:05:42Z 2021-06-15T04:05:42Z 2019 Journal Article Veksha, A., Giannis, A., Yuan, G., Tng, J., Chan, W. P., Chang, V. W., Lisak, G. & Lim, T. (2019). Distribution and modeling of tar compounds produced during downdraft gasification of municipal solid waste. Renewable Energy, 136, 1294-1303. https://dx.doi.org/10.1016/j.renene.2018.09.104 0960-1481 0000-0003-4647-0342 https://hdl.handle.net/10356/151281 10.1016/j.renene.2018.09.104 2-s2.0-85054593166 136 1294 1303 en WTE CRP 1501 105 Renewable Energy © 2018 Elsevier Ltd. All rights reserved. |
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Engineering::Environmental engineering Gasification Municipal Solid Waste Veksha, Andrei Giannis, Apostolos Yuan, Guoan Tng, Jiahui Chan, Wei Ping Chang, Victor Wei-Chung Lisak, Grzegorz Lim, Teik-Thye Distribution and modeling of tar compounds produced during downdraft gasification of municipal solid waste |
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Tar compounds produced during gasification of municipal solid waste (MSW) hinder downstream utilization of syngas. This study investigated the effects of operating conditions (temperature, equivalence air ratio (ER) and MSW moisture content) during gasification using air on tar emissions. Tar was quantified by gravimetric and GC-MS methods, denoted as gravimetric and collected (GC-MS) tar, respectively. Additionally, styrene evolution was studied as it is one of the main tar compounds produced from MSW. By applying the response surface methodology for modeling, it was found that tar contents quantified by the two methods are influenced similarly by ER and MSW moisture content, but differently by temperature. This discrepancy was attributed to the different composition and properties of tar fractions measured by gravimetric and GC-MS methods. Since the selection of analytical method can have impact on the quantification of tar, adoption of different methods for the characterization of tar emissions from MSW gasifiers is essential in order to provide a holistic analysis of the tar evolution process. The content of styrene in collected (GC-MS) tar from MSW gasification was 13–29%. The lower contents of styrene were favored by operating temperature between 850 and 900 °C, higher ER and higher MSW moisture content. |
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School of Civil and Environmental Engineering |
author_facet |
School of Civil and Environmental Engineering Veksha, Andrei Giannis, Apostolos Yuan, Guoan Tng, Jiahui Chan, Wei Ping Chang, Victor Wei-Chung Lisak, Grzegorz Lim, Teik-Thye |
format |
Article |
author |
Veksha, Andrei Giannis, Apostolos Yuan, Guoan Tng, Jiahui Chan, Wei Ping Chang, Victor Wei-Chung Lisak, Grzegorz Lim, Teik-Thye |
author_sort |
Veksha, Andrei |
title |
Distribution and modeling of tar compounds produced during downdraft gasification of municipal solid waste |
title_short |
Distribution and modeling of tar compounds produced during downdraft gasification of municipal solid waste |
title_full |
Distribution and modeling of tar compounds produced during downdraft gasification of municipal solid waste |
title_fullStr |
Distribution and modeling of tar compounds produced during downdraft gasification of municipal solid waste |
title_full_unstemmed |
Distribution and modeling of tar compounds produced during downdraft gasification of municipal solid waste |
title_sort |
distribution and modeling of tar compounds produced during downdraft gasification of municipal solid waste |
publishDate |
2021 |
url |
https://hdl.handle.net/10356/151281 |
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1703971170037006336 |