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Evaluation of two different carriers in the biodegradation process of an azo dye

PURPOSE: The MBBR solution has been applied for the textile wastewater treatment. However, in order to develop cost-effective solutions, waste biomass can be used as carrier. Rice husks are agricultural waste which have been used as an adsorbent of dyes; besides, they can provide and sustain suitabl...

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Autores principales: Santos-Pereira, Graziely Cristina, Corso, Carlos Renato, Forss, Jörgen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6985336/
https://www.ncbi.nlm.nih.gov/pubmed/32030139
http://dx.doi.org/10.1007/s40201-019-00377-8
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author Santos-Pereira, Graziely Cristina
Corso, Carlos Renato
Forss, Jörgen
author_facet Santos-Pereira, Graziely Cristina
Corso, Carlos Renato
Forss, Jörgen
author_sort Santos-Pereira, Graziely Cristina
collection PubMed
description PURPOSE: The MBBR solution has been applied for the textile wastewater treatment. However, in order to develop cost-effective solutions, waste biomass can be used as carrier. Rice husks are agricultural waste which have been used as an adsorbent of dyes; besides, they can provide and sustain suitable microorganism communities for the degradation of dyes. This study aimed to evaluate the biodegradation of the azo dye Direct Red 75 in two treatment systems with different carriers. METHODS: Bioreactor A was composed by an anaerobic bioreactor filled with Kaldnes K1 carriers employed in the MBBR technology and the study was performed in 2 different temperatures, 30 ± 0.5 °C and 21 ± 2 °C. Biofilter B was composed by a sequenced anaerobic-aerobic system with rice husks as carriers and this study was performed at 21 ± 2 °C. The rice husks was also employed as a source of microorganisms in both systems. Decolourization, surface area of the carriers and other parameters were analysed. RESULTS: Biofilter B showed high rates of decolorization, mainly over 90% in all HRT tested (24, 48 and 12 h), presenting itself as a stable system, whereas Bioreactors A showed better performances with 48 h of HRT, about 85% for A at 30 ± 0.5 °C and 45% at 21 ± 2 °C. With a similar amount of carriers, analyses showed that rice husks had a much larger surface for microorganisms to grow on than Kaldnes K1. CONCLUSION: The Biofilter B is a worthwhile system to be investigated and applied for the decolourization of textile wastewater treatment; for instance, in developing countries.
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spelling pubmed-69853362020-02-06 Evaluation of two different carriers in the biodegradation process of an azo dye Santos-Pereira, Graziely Cristina Corso, Carlos Renato Forss, Jörgen J Environ Health Sci Eng Research Article PURPOSE: The MBBR solution has been applied for the textile wastewater treatment. However, in order to develop cost-effective solutions, waste biomass can be used as carrier. Rice husks are agricultural waste which have been used as an adsorbent of dyes; besides, they can provide and sustain suitable microorganism communities for the degradation of dyes. This study aimed to evaluate the biodegradation of the azo dye Direct Red 75 in two treatment systems with different carriers. METHODS: Bioreactor A was composed by an anaerobic bioreactor filled with Kaldnes K1 carriers employed in the MBBR technology and the study was performed in 2 different temperatures, 30 ± 0.5 °C and 21 ± 2 °C. Biofilter B was composed by a sequenced anaerobic-aerobic system with rice husks as carriers and this study was performed at 21 ± 2 °C. The rice husks was also employed as a source of microorganisms in both systems. Decolourization, surface area of the carriers and other parameters were analysed. RESULTS: Biofilter B showed high rates of decolorization, mainly over 90% in all HRT tested (24, 48 and 12 h), presenting itself as a stable system, whereas Bioreactors A showed better performances with 48 h of HRT, about 85% for A at 30 ± 0.5 °C and 45% at 21 ± 2 °C. With a similar amount of carriers, analyses showed that rice husks had a much larger surface for microorganisms to grow on than Kaldnes K1. CONCLUSION: The Biofilter B is a worthwhile system to be investigated and applied for the decolourization of textile wastewater treatment; for instance, in developing countries. Springer International Publishing 2019-05-29 /pmc/articles/PMC6985336/ /pubmed/32030139 http://dx.doi.org/10.1007/s40201-019-00377-8 Text en © The Author(s) 2019 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Research Article
Santos-Pereira, Graziely Cristina
Corso, Carlos Renato
Forss, Jörgen
Evaluation of two different carriers in the biodegradation process of an azo dye
title Evaluation of two different carriers in the biodegradation process of an azo dye
title_full Evaluation of two different carriers in the biodegradation process of an azo dye
title_fullStr Evaluation of two different carriers in the biodegradation process of an azo dye
title_full_unstemmed Evaluation of two different carriers in the biodegradation process of an azo dye
title_short Evaluation of two different carriers in the biodegradation process of an azo dye
title_sort evaluation of two different carriers in the biodegradation process of an azo dye
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6985336/
https://www.ncbi.nlm.nih.gov/pubmed/32030139
http://dx.doi.org/10.1007/s40201-019-00377-8
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