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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Main Authors: Veksha, Andrei, Giannis, Apostolos, Yuan, Guoan, Tng, Jiahui, Chan, Wei Ping, Chang, Victor Wei-Chung, Lisak, Grzegorz, Lim, Teik-Thye
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/151281
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Institution: Nanyang Technological University
Language: English
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spelling 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.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Environmental engineering
Gasification
Municipal Solid Waste
spellingShingle 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
description 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.
author2 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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