Dewaterability of Anaerobic Digested Sludge with Cations and Chitosan as Dual Conditioners
Anaerobic digested sludge dewatering is very important in sludge management and disposal. In this study, flocculation and dewatering behaviour of anaerobic digested sludge were investigated using metal cations (sodium, magnesium, calcium, ferric and aluminium salts) and chitosan as dual conditioners...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Book Chapter |
| Published: |
Springer Science+Business Media New York
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/49300 |
| _version_ | 1848758210480046080 |
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| author | Lau, Shiew Wei Chong, Siew Ang, Ming Sen, Tushar Chua, Han Bing |
| author2 | Ravindra Pogaku |
| author_facet | Ravindra Pogaku Lau, Shiew Wei Chong, Siew Ang, Ming Sen, Tushar Chua, Han Bing |
| author_sort | Lau, Shiew Wei |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Anaerobic digested sludge dewatering is very important in sludge management and disposal. In this study, flocculation and dewatering behaviour of anaerobic digested sludge were investigated using metal cations (sodium, magnesium, calcium, ferric and aluminium salts) and chitosan as dual conditioners. The trivalent ferric and aluminium ions were found to be more effective than the monovalent and divalent cations in improving sludge dewaterability as measured by capillary suction time (CST). Post-addition of chitosan into the sludge precoagulated with metal cations further enhanced the sludge dewaterability. This study suggests that pre-destabilisation of sludge by coagulation with metal cations followed by chitosan addition as polymeric flocculant may improve the dewaterability of anaerobic digested sludge. |
| first_indexed | 2025-11-14T09:40:22Z |
| format | Book Chapter |
| id | curtin-20.500.11937-49300 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:40:22Z |
| publishDate | 2013 |
| publisher | Springer Science+Business Media New York |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-493002023-02-13T08:01:36Z Dewaterability of Anaerobic Digested Sludge with Cations and Chitosan as Dual Conditioners Lau, Shiew Wei Chong, Siew Ang, Ming Sen, Tushar Chua, Han Bing Ravindra Pogaku Awang Bono Christopher Chu Anaerobic digested sludge dewatering is very important in sludge management and disposal. In this study, flocculation and dewatering behaviour of anaerobic digested sludge were investigated using metal cations (sodium, magnesium, calcium, ferric and aluminium salts) and chitosan as dual conditioners. The trivalent ferric and aluminium ions were found to be more effective than the monovalent and divalent cations in improving sludge dewaterability as measured by capillary suction time (CST). Post-addition of chitosan into the sludge precoagulated with metal cations further enhanced the sludge dewaterability. This study suggests that pre-destabilisation of sludge by coagulation with metal cations followed by chitosan addition as polymeric flocculant may improve the dewaterability of anaerobic digested sludge. 2013 Book Chapter http://hdl.handle.net/20.500.11937/49300 Springer Science+Business Media New York restricted |
| spellingShingle | Lau, Shiew Wei Chong, Siew Ang, Ming Sen, Tushar Chua, Han Bing Dewaterability of Anaerobic Digested Sludge with Cations and Chitosan as Dual Conditioners |
| title | Dewaterability of Anaerobic Digested Sludge with Cations and Chitosan as Dual Conditioners |
| title_full | Dewaterability of Anaerobic Digested Sludge with Cations and Chitosan as Dual Conditioners |
| title_fullStr | Dewaterability of Anaerobic Digested Sludge with Cations and Chitosan as Dual Conditioners |
| title_full_unstemmed | Dewaterability of Anaerobic Digested Sludge with Cations and Chitosan as Dual Conditioners |
| title_short | Dewaterability of Anaerobic Digested Sludge with Cations and Chitosan as Dual Conditioners |
| title_sort | dewaterability of anaerobic digested sludge with cations and chitosan as dual conditioners |
| url | http://hdl.handle.net/20.500.11937/49300 |