TREATMENT OF SALINE WASTEWATERS FROM MARINE- PRODUCTS PROCESSING FACTORIES BY ACTIVATED SLUDGE REACTOR.
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| Title: | TREATMENT OF SALINE WASTEWATERS FROM MARINE- PRODUCTS PROCESSING FACTORIES BY ACTIVATED SLUDGE REACTOR. |
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| Authors: | Khannous, L.1, Souissi, N.1, Ghorbel, B.1, Jarboui, R.1, Kallel, M.2, Nasri, M.1, Gharsallah, N.1 |
| Source: | Environmental Technology. Oct2003, Vol. 24 Issue 10, p1261-1268. 8p. |
| Subject Terms: | *Wastewater treatment, *Chemical oxygen demand, *Fisheries, *Marine resources, *Water pollution, Proteolytic enzymes |
| Abstract: | An activated sludge reactor, operated at room temperature (20-30° C) was used to treat saline wastewaters generated by marine-products industries. The system was operated continuously and the influence of the organic loading rates (OLRs), varying from 250 to 1000 mg COD 1-1 day-1, on chemical oxygen demand (COD) removal was investigated. The system, inoculated with NaCl-acclimated culture, removed up to 98% and 88% of the influent COD concentrations at OLRs of 250 and 1000 mg COD l-1 day-1, respectively. Since the organic pollution is essentially composed of proteins, microorganisms, which produced proteolytic enzymes, were isolated from the activated sludge culture. One bacterium with the highest protease activity, identified as Bacillus cereus, was chosen for protease production in fishery wastewaters of different concentrations containing combined heads and viscera powder. Protease synthesis was strongly enhanced when cells were cultivated in two times diluted fishery wastewaters. The enhancement of protease synthesis could have been due to the presence in effluent of organic matters or salts, which stimulated the growth of the strain and protease production. [ABSTRACT FROM AUTHOR] |
| Copyright of Environmental Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | GreenFILE |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 51910267 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: TREATMENT OF SALINE WASTEWATERS FROM MARINE- PRODUCTS PROCESSING FACTORIES BY ACTIVATED SLUDGE REACTOR. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Khannous%2C+L%2E%22">Khannous, L.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Souissi%2C+N%2E%22">Souissi, N.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ghorbel%2C+B%2E%22">Ghorbel, B.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jarboui%2C+R%2E%22">Jarboui, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kallel%2C+M%2E%22">Kallel, M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Nasri%2C+M%2E%22">Nasri, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Gharsallah%2C+N%2E%22">Gharsallah, N.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Environmental+Technology%22">Environmental Technology</searchLink>. Oct2003, Vol. 24 Issue 10, p1261-1268. 8p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Wastewater+treatment%22">Wastewater treatment</searchLink><br />*<searchLink fieldCode="DE" term="%22Chemical+oxygen+demand%22">Chemical oxygen demand</searchLink><br />*<searchLink fieldCode="DE" term="%22Fisheries%22">Fisheries</searchLink><br />*<searchLink fieldCode="DE" term="%22Marine+resources%22">Marine resources</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+pollution%22">Water pollution</searchLink><br /><searchLink fieldCode="DE" term="%22Proteolytic+enzymes%22">Proteolytic enzymes</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: An activated sludge reactor, operated at room temperature (20-30° C) was used to treat saline wastewaters generated by marine-products industries. The system was operated continuously and the influence of the organic loading rates (OLRs), varying from 250 to 1000 mg COD 1-1 day-1, on chemical oxygen demand (COD) removal was investigated. The system, inoculated with NaCl-acclimated culture, removed up to 98% and 88% of the influent COD concentrations at OLRs of 250 and 1000 mg COD l-1 day-1, respectively. Since the organic pollution is essentially composed of proteins, microorganisms, which produced proteolytic enzymes, were isolated from the activated sludge culture. One bacterium with the highest protease activity, identified as Bacillus cereus, was chosen for protease production in fishery wastewaters of different concentrations containing combined heads and viscera powder. Protease synthesis was strongly enhanced when cells were cultivated in two times diluted fishery wastewaters. The enhancement of protease synthesis could have been due to the presence in effluent of organic matters or salts, which stimulated the growth of the strain and protease production. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Environmental Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1080/09593330309385668 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 1261 Subjects: – SubjectFull: Wastewater treatment Type: general – SubjectFull: Chemical oxygen demand Type: general – SubjectFull: Fisheries Type: general – SubjectFull: Marine resources Type: general – SubjectFull: Water pollution Type: general – SubjectFull: Proteolytic enzymes Type: general Titles: – TitleFull: TREATMENT OF SALINE WASTEWATERS FROM MARINE- PRODUCTS PROCESSING FACTORIES BY ACTIVATED SLUDGE REACTOR. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Khannous, L. – PersonEntity: Name: NameFull: Souissi, N. – PersonEntity: Name: NameFull: Ghorbel, B. – PersonEntity: Name: NameFull: Jarboui, R. – PersonEntity: Name: NameFull: Kallel, M. – PersonEntity: Name: NameFull: Nasri, M. – PersonEntity: Name: NameFull: Gharsallah, N. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2003 Type: published Y: 2003 Identifiers: – Type: issn-print Value: 09593330 Numbering: – Type: volume Value: 24 – Type: issue Value: 10 Titles: – TitleFull: Environmental Technology Type: main |
| ResultId | 1 |
