Biological treatment of tannery wastewater by using salt-tolerant bacterial strains
BACKGROUND: High salinity (1–10% w/v) of tannery wastewater makes it difficult to be treated by conventional biological treatment. Salt tolerant microbes can adapt to these saline conditions and degrade the organics in saline wastewater. RESULTS: Four salt tolerant bacterial strains isolated from ma...
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Formato: | Texto |
Lenguaje: | English |
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BioMed Central
2008
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2397378/ https://www.ncbi.nlm.nih.gov/pubmed/18445252 http://dx.doi.org/10.1186/1475-2859-7-15 |
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author | Sivaprakasam, Senthilkumar Mahadevan, Surianarayanan Sekar, Sudharshan Rajakumar, Susheela |
author_facet | Sivaprakasam, Senthilkumar Mahadevan, Surianarayanan Sekar, Sudharshan Rajakumar, Susheela |
author_sort | Sivaprakasam, Senthilkumar |
collection | PubMed |
description | BACKGROUND: High salinity (1–10% w/v) of tannery wastewater makes it difficult to be treated by conventional biological treatment. Salt tolerant microbes can adapt to these saline conditions and degrade the organics in saline wastewater. RESULTS: Four salt tolerant bacterial strains isolated from marine and tannery saline wastewater samples were identified as Pseudomonas aeruginosa, Bacillus flexus, Exiguobacterium homiense and Staphylococcus aureus. Growth factors of the identified strains were optimized. Tannery saline wastewater obtained from a Common Effluent Treatment Plant (CETP) near Chennai (southern India) was treated with pure and mixed consortia of four salt tolerant bacterial strains. Experiments with optimized conditions and varying salt content (between 2 and 10% (w/v) were conducted. Salt inhibition effects on COD removal rate were noted. Comparative analysis was made by treating the tannery saline wastewater with activated sludge obtained from CETP and with natural habitat microbes present in raw tannery saline wastewater. CONCLUSION: Salt tolerant bacterial mixed consortia showed appreciable biodegradation at all saline concentrations (2%, 4%, 6%, 8% and 10% w/v) with 80% COD reduction in particular at 8% salinity level the consortia could be used as suitable working cultures for tannery saline wastewater treatment. |
format | Text |
id | pubmed-2397378 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2008 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-23973782008-05-29 Biological treatment of tannery wastewater by using salt-tolerant bacterial strains Sivaprakasam, Senthilkumar Mahadevan, Surianarayanan Sekar, Sudharshan Rajakumar, Susheela Microb Cell Fact Research BACKGROUND: High salinity (1–10% w/v) of tannery wastewater makes it difficult to be treated by conventional biological treatment. Salt tolerant microbes can adapt to these saline conditions and degrade the organics in saline wastewater. RESULTS: Four salt tolerant bacterial strains isolated from marine and tannery saline wastewater samples were identified as Pseudomonas aeruginosa, Bacillus flexus, Exiguobacterium homiense and Staphylococcus aureus. Growth factors of the identified strains were optimized. Tannery saline wastewater obtained from a Common Effluent Treatment Plant (CETP) near Chennai (southern India) was treated with pure and mixed consortia of four salt tolerant bacterial strains. Experiments with optimized conditions and varying salt content (between 2 and 10% (w/v) were conducted. Salt inhibition effects on COD removal rate were noted. Comparative analysis was made by treating the tannery saline wastewater with activated sludge obtained from CETP and with natural habitat microbes present in raw tannery saline wastewater. CONCLUSION: Salt tolerant bacterial mixed consortia showed appreciable biodegradation at all saline concentrations (2%, 4%, 6%, 8% and 10% w/v) with 80% COD reduction in particular at 8% salinity level the consortia could be used as suitable working cultures for tannery saline wastewater treatment. BioMed Central 2008-04-29 /pmc/articles/PMC2397378/ /pubmed/18445252 http://dx.doi.org/10.1186/1475-2859-7-15 Text en Copyright © 2008 Sivaprakasam et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Sivaprakasam, Senthilkumar Mahadevan, Surianarayanan Sekar, Sudharshan Rajakumar, Susheela Biological treatment of tannery wastewater by using salt-tolerant bacterial strains |
title | Biological treatment of tannery wastewater by using salt-tolerant bacterial strains |
title_full | Biological treatment of tannery wastewater by using salt-tolerant bacterial strains |
title_fullStr | Biological treatment of tannery wastewater by using salt-tolerant bacterial strains |
title_full_unstemmed | Biological treatment of tannery wastewater by using salt-tolerant bacterial strains |
title_short | Biological treatment of tannery wastewater by using salt-tolerant bacterial strains |
title_sort | biological treatment of tannery wastewater by using salt-tolerant bacterial strains |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2397378/ https://www.ncbi.nlm.nih.gov/pubmed/18445252 http://dx.doi.org/10.1186/1475-2859-7-15 |
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