Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen recovery: A review
Sewage sludge is bio-solid with high moisture content generated from wastewater treatment plants. Due to the avoidance of energy-intensive dewatering, hydrothermal conversion of sewage sludge becomes a promising technology to simultaneously achieve energy recovery and solid waste management. In orde...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2016
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| Online Access: | https://hdl.handle.net/10356/80280 http://hdl.handle.net/10220/40468 |
| _version_ | 1811689162935369728 |
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| author | He, Chao Chen, Chia-Lung Giannis, Apostolos Yang, Yanhui Wang, Jing-Yuan |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering He, Chao Chen, Chia-Lung Giannis, Apostolos Yang, Yanhui Wang, Jing-Yuan |
| author_sort | He, Chao |
| collection | NTU |
| description | Sewage sludge is bio-solid with high moisture content generated from wastewater treatment plants. Due to the avoidance of energy-intensive dewatering, hydrothermal conversion of sewage sludge becomes a promising technology to simultaneously achieve energy recovery and solid waste management. In order to obtain an entire understanding of applicability of hydrothermal gasification for hydrogen rich gas production from sewage sludge, this review article discussed hydrothermal conversion and gasification processes in terms of fundamental principles, operating conditions, partial oxidative gasification, and detrimental effects of intermediates. Furthermore, since organic compounds in sewage sludge are mainly composed of carbohydrates, proteins, lipids, and lignin, this article comprehensively reviewed hydrogen production from these biomass model compounds and their hydrolysis products under sub- and supercritical water. Additionally, introduction of alkali salts and heterogeneous catalysts to enhance hydrogen yield under mild temperatures and pressures in hydrothermal gasification process was also discussed. Based on bench and pilot scale studies, supercritical water gasification of sewage sludge for hydrogen production is feasible in terms of technical and economic evaluation. Given issues concerning corrosion, plugging and high operating cost, a combined supercritical water gasification and catalytic hydrothermal gasification concept is proposed as a practical strategy to directly harness hydrogen from sewage sludge in future applications. |
| first_indexed | 2024-10-01T05:43:43Z |
| format | Journal Article |
| id | ntu-10356/80280 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:43:43Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/802802020-03-07T11:43:28Z Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen recovery: A review He, Chao Chen, Chia-Lung Giannis, Apostolos Yang, Yanhui Wang, Jing-Yuan School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Residues and Resource Reclamation Centre Sewage sludge treatment Hydrothermal conversion Supercritical water Wet biomass Catalyst screening Subcritical water Sewage sludge is bio-solid with high moisture content generated from wastewater treatment plants. Due to the avoidance of energy-intensive dewatering, hydrothermal conversion of sewage sludge becomes a promising technology to simultaneously achieve energy recovery and solid waste management. In order to obtain an entire understanding of applicability of hydrothermal gasification for hydrogen rich gas production from sewage sludge, this review article discussed hydrothermal conversion and gasification processes in terms of fundamental principles, operating conditions, partial oxidative gasification, and detrimental effects of intermediates. Furthermore, since organic compounds in sewage sludge are mainly composed of carbohydrates, proteins, lipids, and lignin, this article comprehensively reviewed hydrogen production from these biomass model compounds and their hydrolysis products under sub- and supercritical water. Additionally, introduction of alkali salts and heterogeneous catalysts to enhance hydrogen yield under mild temperatures and pressures in hydrothermal gasification process was also discussed. Based on bench and pilot scale studies, supercritical water gasification of sewage sludge for hydrogen production is feasible in terms of technical and economic evaluation. Given issues concerning corrosion, plugging and high operating cost, a combined supercritical water gasification and catalytic hydrothermal gasification concept is proposed as a practical strategy to directly harness hydrogen from sewage sludge in future applications. 2016-04-28T08:04:28Z 2019-12-06T13:46:23Z 2016-04-28T08:04:28Z 2019-12-06T13:46:23Z 2014 2014 Journal Article He, C., Chen, C. L., Giannis, A., Yang, Y., & Wang, J. Y. (2014). Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen production: A review. Renewable and Sustainable Energy Reviews, 39, 1127-1142. 1364-0321 https://hdl.handle.net/10356/80280 http://hdl.handle.net/10220/40468 10.1016/j.rser.2014.07.141 191139 en Renewable and Sustainable Energy Reviews © 2014 ElsevierLtd. |
| spellingShingle | Sewage sludge treatment Hydrothermal conversion Supercritical water Wet biomass Catalyst screening Subcritical water He, Chao Chen, Chia-Lung Giannis, Apostolos Yang, Yanhui Wang, Jing-Yuan Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen recovery: A review |
| title | Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen recovery: A review |
| title_full | Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen recovery: A review |
| title_fullStr | Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen recovery: A review |
| title_full_unstemmed | Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen recovery: A review |
| title_short | Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen recovery: A review |
| title_sort | hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen recovery a review |
| topic | Sewage sludge treatment Hydrothermal conversion Supercritical water Wet biomass Catalyst screening Subcritical water |
| url | https://hdl.handle.net/10356/80280 http://hdl.handle.net/10220/40468 |
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