Evidence of soluble microbial products accelerating chloramine decay in nitrifying bulk water samples
The discovery of a microbially derived soluble product that accelerates chloramine decay is described. Nitrifying bacteria are believed to be wholly responsible for rapid chloramine loss in drinking water systems. However, a recent investigation showed that an unidentified soluble agent significantl...
| Main Authors: | , , |
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| Format: | Journal Article |
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IWA Publishing
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/17768 |
| _version_ | 1848749552571514880 |
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| author | Bal Krishna, K Sathasivan, Arumugam Sarker, Dipok |
| author_facet | Bal Krishna, K Sathasivan, Arumugam Sarker, Dipok |
| author_sort | Bal Krishna, K |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The discovery of a microbially derived soluble product that accelerates chloramine decay is described. Nitrifying bacteria are believed to be wholly responsible for rapid chloramine loss in drinking water systems. However, a recent investigation showed that an unidentified soluble agent significantly accelerated chloramine decay. The agent was suspected to be either natural organic matter (NOM) or soluble microbial products (SMPs). A laboratory scale reactor was fed chloraminated reverse osmosis (RO) treated water to eliminate the interference from NOM. Once nitrification had set in, experiments were conducted on the reactor and feed waters to determine the identity of the component. The study showed the presence of SMPs released by microbes in severely nitrified waters. Further experiments proved that the SMPs significantly accelerated chloramine decay, probably through catalytic reaction. Moreover, application of common protein denaturing techniques stopped the reaction implying that the compound responsible was likely to be a protein. This significant finding will pave the way for better control of chloramine in the distribution systems. |
| first_indexed | 2025-11-14T07:22:45Z |
| format | Journal Article |
| id | curtin-20.500.11937-17768 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:22:45Z |
| publishDate | 2012 |
| publisher | IWA Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-177682017-09-13T15:42:44Z Evidence of soluble microbial products accelerating chloramine decay in nitrifying bulk water samples Bal Krishna, K Sathasivan, Arumugam Sarker, Dipok Chloramine decay Nitrification Soluble microbial products Catalytic reaction Chloramine Nitrite oxidation Auto-decomposition Protein The discovery of a microbially derived soluble product that accelerates chloramine decay is described. Nitrifying bacteria are believed to be wholly responsible for rapid chloramine loss in drinking water systems. However, a recent investigation showed that an unidentified soluble agent significantly accelerated chloramine decay. The agent was suspected to be either natural organic matter (NOM) or soluble microbial products (SMPs). A laboratory scale reactor was fed chloraminated reverse osmosis (RO) treated water to eliminate the interference from NOM. Once nitrification had set in, experiments were conducted on the reactor and feed waters to determine the identity of the component. The study showed the presence of SMPs released by microbes in severely nitrified waters. Further experiments proved that the SMPs significantly accelerated chloramine decay, probably through catalytic reaction. Moreover, application of common protein denaturing techniques stopped the reaction implying that the compound responsible was likely to be a protein. This significant finding will pave the way for better control of chloramine in the distribution systems. 2012 Journal Article http://hdl.handle.net/20.500.11937/17768 10.1016/j.watres.2012.05.026 IWA Publishing restricted |
| spellingShingle | Chloramine decay Nitrification Soluble microbial products Catalytic reaction Chloramine Nitrite oxidation Auto-decomposition Protein Bal Krishna, K Sathasivan, Arumugam Sarker, Dipok Evidence of soluble microbial products accelerating chloramine decay in nitrifying bulk water samples |
| title | Evidence of soluble microbial products accelerating chloramine decay in nitrifying bulk water samples |
| title_full | Evidence of soluble microbial products accelerating chloramine decay in nitrifying bulk water samples |
| title_fullStr | Evidence of soluble microbial products accelerating chloramine decay in nitrifying bulk water samples |
| title_full_unstemmed | Evidence of soluble microbial products accelerating chloramine decay in nitrifying bulk water samples |
| title_short | Evidence of soluble microbial products accelerating chloramine decay in nitrifying bulk water samples |
| title_sort | evidence of soluble microbial products accelerating chloramine decay in nitrifying bulk water samples |
| topic | Chloramine decay Nitrification Soluble microbial products Catalytic reaction Chloramine Nitrite oxidation Auto-decomposition Protein |
| url | http://hdl.handle.net/20.500.11937/17768 |