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Inhibiting effect of textile wastewater on the activity of sludge from the biological treatment process of the activated sludge plant
Textile industry represents an important source of toxic substances rejected in environment. Indeed, effluent of these industries contains dyes and chemicals. They are rejected in environment without any treatment. The aim of this work is to evaluate ecotoxicological effect of industrial textile eff...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6864186/ https://www.ncbi.nlm.nih.gov/pubmed/31762654 http://dx.doi.org/10.1016/j.sjbs.2018.06.003 |
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author | Gebrati, L. El Achaby, M. Chatoui, H. Laqbaqbi, M. El Kharraz, J. Aziz, F. |
author_facet | Gebrati, L. El Achaby, M. Chatoui, H. Laqbaqbi, M. El Kharraz, J. Aziz, F. |
author_sort | Gebrati, L. |
collection | PubMed |
description | Textile industry represents an important source of toxic substances rejected in environment. Indeed, effluent of these industries contains dyes and chemicals. They are rejected in environment without any treatment. The aim of this work is to evaluate ecotoxicological effect of industrial textile effluents on the sludge harvested from activated sludge treatment plant of Marrakech city (Morocco). For this, we are interested in determining the inhibition condition that corresponds to 50% decrease of bacterial activity in sludge. Obtained results showed that inhibition percentage of bacterial activity depends narrowly on contact time and on added effluent volume, until a limit concentration where there is no degradation of substratum. In fact, substratum degradation speed shows about 65 times decrease when 80% (v/v) of textile wastewater is added, in comparison with the controlled one. Consequently the inhibition constant (Ki) that corresponds to 50% of bacterial inhibition activity is estimated to 0.65 mg l(−1) of dye. These studies confirm a real ecotoxicological risk of these effluents. Therefore, a treatment is mandatory before their rejection in environment. |
format | Online Article Text |
id | pubmed-6864186 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-68641862019-11-22 Inhibiting effect of textile wastewater on the activity of sludge from the biological treatment process of the activated sludge plant Gebrati, L. El Achaby, M. Chatoui, H. Laqbaqbi, M. El Kharraz, J. Aziz, F. Saudi J Biol Sci Article Textile industry represents an important source of toxic substances rejected in environment. Indeed, effluent of these industries contains dyes and chemicals. They are rejected in environment without any treatment. The aim of this work is to evaluate ecotoxicological effect of industrial textile effluents on the sludge harvested from activated sludge treatment plant of Marrakech city (Morocco). For this, we are interested in determining the inhibition condition that corresponds to 50% decrease of bacterial activity in sludge. Obtained results showed that inhibition percentage of bacterial activity depends narrowly on contact time and on added effluent volume, until a limit concentration where there is no degradation of substratum. In fact, substratum degradation speed shows about 65 times decrease when 80% (v/v) of textile wastewater is added, in comparison with the controlled one. Consequently the inhibition constant (Ki) that corresponds to 50% of bacterial inhibition activity is estimated to 0.65 mg l(−1) of dye. These studies confirm a real ecotoxicological risk of these effluents. Therefore, a treatment is mandatory before their rejection in environment. Elsevier 2019-11 2018-06-15 /pmc/articles/PMC6864186/ /pubmed/31762654 http://dx.doi.org/10.1016/j.sjbs.2018.06.003 Text en © 2018 Production and hosting by Elsevier B.V. on behalf of King Saud University. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Article Gebrati, L. El Achaby, M. Chatoui, H. Laqbaqbi, M. El Kharraz, J. Aziz, F. Inhibiting effect of textile wastewater on the activity of sludge from the biological treatment process of the activated sludge plant |
title | Inhibiting effect of textile wastewater on the activity of sludge from the biological treatment process of the activated sludge plant |
title_full | Inhibiting effect of textile wastewater on the activity of sludge from the biological treatment process of the activated sludge plant |
title_fullStr | Inhibiting effect of textile wastewater on the activity of sludge from the biological treatment process of the activated sludge plant |
title_full_unstemmed | Inhibiting effect of textile wastewater on the activity of sludge from the biological treatment process of the activated sludge plant |
title_short | Inhibiting effect of textile wastewater on the activity of sludge from the biological treatment process of the activated sludge plant |
title_sort | inhibiting effect of textile wastewater on the activity of sludge from the biological treatment process of the activated sludge plant |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6864186/ https://www.ncbi.nlm.nih.gov/pubmed/31762654 http://dx.doi.org/10.1016/j.sjbs.2018.06.003 |
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