Cargando…
Experimental design approach to the optimization of PAHs bioremediation from artificially contaminated soil: application of variables screening development
BACKGROUND: The effectiveness of bioremediation systems for PAH-contaminated soil may be constrained by physicochemical properties of contaminants and environmental factors. Information on what is the most effective factor in bioremediation process is essential in the decision of what stimulations c...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2015
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4381363/ https://www.ncbi.nlm.nih.gov/pubmed/25834738 http://dx.doi.org/10.1186/s40201-015-0178-y |
_version_ | 1782364439519952896 |
---|---|
author | Ravanipour, Masoumeh Kalantary, Roshanak Rezaei Mohseni-Bandpi, Anoushiravan Esrafili, Ali Farzadkia, Mahdi Hashemi-Najafabadi, Samireh |
author_facet | Ravanipour, Masoumeh Kalantary, Roshanak Rezaei Mohseni-Bandpi, Anoushiravan Esrafili, Ali Farzadkia, Mahdi Hashemi-Najafabadi, Samireh |
author_sort | Ravanipour, Masoumeh |
collection | PubMed |
description | BACKGROUND: The effectiveness of bioremediation systems for PAH-contaminated soil may be constrained by physicochemical properties of contaminants and environmental factors. Information on what is the most effective factor in bioremediation process is essential in the decision of what stimulations can be taken to assist the biodegradation efficacy. METHODS: In this study, four factors of surfactant (Tween 80), humic acid (HA), salinity and nutrients in a 2(4) full factorial design were screened in bioremediation of phenanthrene contaminated soil by using a consortium of bacteria. RESULTS: Between the employed levels of the factors only salinity had not significant effect. Optimal concentrations of surfactant, HA and nutrient were obtained by a response surface design. For phenanthrene biodegradation, a central composite face centred design (CCFD) showed that nutrient, surfactant and HA concentrations had highly significant, significant and insignificant effects, respectively. The best conditions with 87.1% phenanthrene biodegradation were 150 mg HA/Kg soil, 12.68 μg/L surfactant, and nutrients as K(2)HPO(4), 0.8; KH(2)PO(4), 0.2 and KNO(3), 1 g/L. A high similarity was between the model prediction and experimental results. CONCLUSIONS: This study showed that nutrient with 81.27% efficiency could be considered as the most effective factor for practical implications of bioremediation process for PAHs contaminated soil cleanup strategies. |
format | Online Article Text |
id | pubmed-4381363 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-43813632015-04-02 Experimental design approach to the optimization of PAHs bioremediation from artificially contaminated soil: application of variables screening development Ravanipour, Masoumeh Kalantary, Roshanak Rezaei Mohseni-Bandpi, Anoushiravan Esrafili, Ali Farzadkia, Mahdi Hashemi-Najafabadi, Samireh J Environ Health Sci Eng Research Article BACKGROUND: The effectiveness of bioremediation systems for PAH-contaminated soil may be constrained by physicochemical properties of contaminants and environmental factors. Information on what is the most effective factor in bioremediation process is essential in the decision of what stimulations can be taken to assist the biodegradation efficacy. METHODS: In this study, four factors of surfactant (Tween 80), humic acid (HA), salinity and nutrients in a 2(4) full factorial design were screened in bioremediation of phenanthrene contaminated soil by using a consortium of bacteria. RESULTS: Between the employed levels of the factors only salinity had not significant effect. Optimal concentrations of surfactant, HA and nutrient were obtained by a response surface design. For phenanthrene biodegradation, a central composite face centred design (CCFD) showed that nutrient, surfactant and HA concentrations had highly significant, significant and insignificant effects, respectively. The best conditions with 87.1% phenanthrene biodegradation were 150 mg HA/Kg soil, 12.68 μg/L surfactant, and nutrients as K(2)HPO(4), 0.8; KH(2)PO(4), 0.2 and KNO(3), 1 g/L. A high similarity was between the model prediction and experimental results. CONCLUSIONS: This study showed that nutrient with 81.27% efficiency could be considered as the most effective factor for practical implications of bioremediation process for PAHs contaminated soil cleanup strategies. BioMed Central 2015-03-20 /pmc/articles/PMC4381363/ /pubmed/25834738 http://dx.doi.org/10.1186/s40201-015-0178-y Text en © Ravanipour et al.; licensee BioMed Central. 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Article Ravanipour, Masoumeh Kalantary, Roshanak Rezaei Mohseni-Bandpi, Anoushiravan Esrafili, Ali Farzadkia, Mahdi Hashemi-Najafabadi, Samireh Experimental design approach to the optimization of PAHs bioremediation from artificially contaminated soil: application of variables screening development |
title | Experimental design approach to the optimization of PAHs bioremediation from artificially contaminated soil: application of variables screening development |
title_full | Experimental design approach to the optimization of PAHs bioremediation from artificially contaminated soil: application of variables screening development |
title_fullStr | Experimental design approach to the optimization of PAHs bioremediation from artificially contaminated soil: application of variables screening development |
title_full_unstemmed | Experimental design approach to the optimization of PAHs bioremediation from artificially contaminated soil: application of variables screening development |
title_short | Experimental design approach to the optimization of PAHs bioremediation from artificially contaminated soil: application of variables screening development |
title_sort | experimental design approach to the optimization of pahs bioremediation from artificially contaminated soil: application of variables screening development |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4381363/ https://www.ncbi.nlm.nih.gov/pubmed/25834738 http://dx.doi.org/10.1186/s40201-015-0178-y |
work_keys_str_mv | AT ravanipourmasoumeh experimentaldesignapproachtotheoptimizationofpahsbioremediationfromartificiallycontaminatedsoilapplicationofvariablesscreeningdevelopment AT kalantaryroshanakrezaei experimentaldesignapproachtotheoptimizationofpahsbioremediationfromartificiallycontaminatedsoilapplicationofvariablesscreeningdevelopment AT mohsenibandpianoushiravan experimentaldesignapproachtotheoptimizationofpahsbioremediationfromartificiallycontaminatedsoilapplicationofvariablesscreeningdevelopment AT esrafiliali experimentaldesignapproachtotheoptimizationofpahsbioremediationfromartificiallycontaminatedsoilapplicationofvariablesscreeningdevelopment AT farzadkiamahdi experimentaldesignapproachtotheoptimizationofpahsbioremediationfromartificiallycontaminatedsoilapplicationofvariablesscreeningdevelopment AT hasheminajafabadisamireh experimentaldesignapproachtotheoptimizationofpahsbioremediationfromartificiallycontaminatedsoilapplicationofvariablesscreeningdevelopment |