Effect of alkali addition on sulfur transformation during low temperature pyrolysis of sewage sludge
© 2016 by The Combustion Institute. Published by Elsevier Inc.Odorous sulfur-containing gases released during sewage sludge processing cause significant environmental pollution. This study investigates the effect of alkali addition on sulfur transformation as well as the release of the sulfur-contai...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
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Combustion Institute
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/52881 |
| _version_ | 1848759034350403584 |
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| author | Cheng, S. Qiao, Y. Huang, J. Cao, L. Yang, H. Liu, H. Yu, Yun Xu, M. |
| author_facet | Cheng, S. Qiao, Y. Huang, J. Cao, L. Yang, H. Liu, H. Yu, Yun Xu, M. |
| author_sort | Cheng, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2016 by The Combustion Institute. Published by Elsevier Inc.Odorous sulfur-containing gases released during sewage sludge processing cause significant environmental pollution. This study investigates the effect of alkali addition on sulfur transformation as well as the release of the sulfur-containing gases during sewage sludge pyrolysis at 150-450°C. The presence of alkali can promote the transformation of unstable organic aliphatic and aromatic sulfurs into more stable sulfoxides and sulphonic acid at low temperatures (i.e., 250°C). Alkalis also fix the inorganic sulfide and sulphate in char. Therefore, the release of the sulfur-containing gases can be greatly reduced with alkali addition. Stronger alkalis show more significant effect on the reduction of sulfur-containing gases, likely because of more OH radicals generated for the transformation of organic sulfurs. |
| first_indexed | 2025-11-14T09:53:28Z |
| format | Journal Article |
| id | curtin-20.500.11937-52881 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:53:28Z |
| publishDate | 2015 |
| publisher | Combustion Institute |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-528812017-09-13T15:40:02Z Effect of alkali addition on sulfur transformation during low temperature pyrolysis of sewage sludge Cheng, S. Qiao, Y. Huang, J. Cao, L. Yang, H. Liu, H. Yu, Yun Xu, M. © 2016 by The Combustion Institute. Published by Elsevier Inc.Odorous sulfur-containing gases released during sewage sludge processing cause significant environmental pollution. This study investigates the effect of alkali addition on sulfur transformation as well as the release of the sulfur-containing gases during sewage sludge pyrolysis at 150-450°C. The presence of alkali can promote the transformation of unstable organic aliphatic and aromatic sulfurs into more stable sulfoxides and sulphonic acid at low temperatures (i.e., 250°C). Alkalis also fix the inorganic sulfide and sulphate in char. Therefore, the release of the sulfur-containing gases can be greatly reduced with alkali addition. Stronger alkalis show more significant effect on the reduction of sulfur-containing gases, likely because of more OH radicals generated for the transformation of organic sulfurs. 2015 Journal Article http://hdl.handle.net/20.500.11937/52881 10.1016/j.proci.2016.06.124 Combustion Institute restricted |
| spellingShingle | Cheng, S. Qiao, Y. Huang, J. Cao, L. Yang, H. Liu, H. Yu, Yun Xu, M. Effect of alkali addition on sulfur transformation during low temperature pyrolysis of sewage sludge |
| title | Effect of alkali addition on sulfur transformation during low temperature pyrolysis of sewage sludge |
| title_full | Effect of alkali addition on sulfur transformation during low temperature pyrolysis of sewage sludge |
| title_fullStr | Effect of alkali addition on sulfur transformation during low temperature pyrolysis of sewage sludge |
| title_full_unstemmed | Effect of alkali addition on sulfur transformation during low temperature pyrolysis of sewage sludge |
| title_short | Effect of alkali addition on sulfur transformation during low temperature pyrolysis of sewage sludge |
| title_sort | effect of alkali addition on sulfur transformation during low temperature pyrolysis of sewage sludge |
| url | http://hdl.handle.net/20.500.11937/52881 |