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Optimization of phenol degradation by Antarctic bacterium Rhodococcus sp.

This study focused on the ability of the Antarctic bacterium Rhodococcus sp. strain AQ5-14 to survive exposure to and to degrade high concentrations of phenol at 0.5 g l-1. After initial evaluation of phenol-degrading performance, the effects of salinity, pH and temperature on the rate of phenol deg...

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Main Authors: Tengku Marzuki, Tengku Athirrah, Subramanian, Kavilasni, Zakaria, Nur Nadhirah, Convey, Peter, Abdul Khalil, Khalilah, Lee, Gillian Li Yin, Zulkharnain, Azham, Shaharuddin, Noor Azmi, Ahmad, Siti Aqlima
格式: Article
语言:English
出版: Cambridge University Press 2020
在线阅读:http://psasir.upm.edu.my/id/eprint/87009/1/Optimization%20of%20phenol%20degradation%20by%20Antarctic%20bacterium%20Rhodococcus%20sp.pdf
http://psasir.upm.edu.my/id/eprint/87009/
https://www.cambridge.org/core/journals/antarctic-science/article/abs/optimization-of-phenol-degradation-by-antarctic-bacterium-rhodococcus-sp/F8D5DF954D20817694C3012369651D34
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spelling my.upm.eprints.870092022-01-10T08:31:11Z http://psasir.upm.edu.my/id/eprint/87009/ Optimization of phenol degradation by Antarctic bacterium Rhodococcus sp. Tengku Marzuki, Tengku Athirrah Subramanian, Kavilasni Zakaria, Nur Nadhirah Convey, Peter Abdul Khalil, Khalilah Lee, Gillian Li Yin Zulkharnain, Azham Shaharuddin, Noor Azmi Ahmad, Siti Aqlima This study focused on the ability of the Antarctic bacterium Rhodococcus sp. strain AQ5-14 to survive exposure to and to degrade high concentrations of phenol at 0.5 g l-1. After initial evaluation of phenol-degrading performance, the effects of salinity, pH and temperature on the rate of phenol degradation were examined. The optimum conditions for phenol degradation were pH 7 and 0.4 g l-1 NaCl at a temperature of 25°C (83.90%). An analysis using response surface methodology (RSM) and the Plackett-Burman design identified salinity, pH and temperature as three statistically significant factors influencing phenol degradation. The maximum bacterial growth was observed (optical density at 600 nm = 0.455), with medium conditions of pH 6.5, 22.5°C and 0.47 g l-1 NaCl in the central composite design of the RSM experiments enhancing phenol degradation to 99.10%. A central composite design was then used to examine the interactions among these three variables and to determine their optimal levels. There was excellent agreement (R2 = 0.9785) between experimental and predicted values, with less strong but still good agreement (R2 = 0.8376) between the predicted model values and those obtained experimentally under optimized conditions. Rhodococcus sp. strain AQ5-14 has excellent potential for the bioremediation of phenol. Cambridge University Press 2020-07-06 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/87009/1/Optimization%20of%20phenol%20degradation%20by%20Antarctic%20bacterium%20Rhodococcus%20sp.pdf Tengku Marzuki, Tengku Athirrah and Subramanian, Kavilasni and Zakaria, Nur Nadhirah and Convey, Peter and Abdul Khalil, Khalilah and Lee, Gillian Li Yin and Zulkharnain, Azham and Shaharuddin, Noor Azmi and Ahmad, Siti Aqlima (2020) Optimization of phenol degradation by Antarctic bacterium Rhodococcus sp. Antarctic Science, 32 (6). pp. 486-495. ISSN 0954-1020; ESSN: 1365-2079 https://www.cambridge.org/core/journals/antarctic-science/article/abs/optimization-of-phenol-degradation-by-antarctic-bacterium-rhodococcus-sp/F8D5DF954D20817694C3012369651D34 10.1017/S0954102020000358
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description This study focused on the ability of the Antarctic bacterium Rhodococcus sp. strain AQ5-14 to survive exposure to and to degrade high concentrations of phenol at 0.5 g l-1. After initial evaluation of phenol-degrading performance, the effects of salinity, pH and temperature on the rate of phenol degradation were examined. The optimum conditions for phenol degradation were pH 7 and 0.4 g l-1 NaCl at a temperature of 25°C (83.90%). An analysis using response surface methodology (RSM) and the Plackett-Burman design identified salinity, pH and temperature as three statistically significant factors influencing phenol degradation. The maximum bacterial growth was observed (optical density at 600 nm = 0.455), with medium conditions of pH 6.5, 22.5°C and 0.47 g l-1 NaCl in the central composite design of the RSM experiments enhancing phenol degradation to 99.10%. A central composite design was then used to examine the interactions among these three variables and to determine their optimal levels. There was excellent agreement (R2 = 0.9785) between experimental and predicted values, with less strong but still good agreement (R2 = 0.8376) between the predicted model values and those obtained experimentally under optimized conditions. Rhodococcus sp. strain AQ5-14 has excellent potential for the bioremediation of phenol.
format Article
author Tengku Marzuki, Tengku Athirrah
Subramanian, Kavilasni
Zakaria, Nur Nadhirah
Convey, Peter
Abdul Khalil, Khalilah
Lee, Gillian Li Yin
Zulkharnain, Azham
Shaharuddin, Noor Azmi
Ahmad, Siti Aqlima
spellingShingle Tengku Marzuki, Tengku Athirrah
Subramanian, Kavilasni
Zakaria, Nur Nadhirah
Convey, Peter
Abdul Khalil, Khalilah
Lee, Gillian Li Yin
Zulkharnain, Azham
Shaharuddin, Noor Azmi
Ahmad, Siti Aqlima
Optimization of phenol degradation by Antarctic bacterium Rhodococcus sp.
author_facet Tengku Marzuki, Tengku Athirrah
Subramanian, Kavilasni
Zakaria, Nur Nadhirah
Convey, Peter
Abdul Khalil, Khalilah
Lee, Gillian Li Yin
Zulkharnain, Azham
Shaharuddin, Noor Azmi
Ahmad, Siti Aqlima
author_sort Tengku Marzuki, Tengku Athirrah
title Optimization of phenol degradation by Antarctic bacterium Rhodococcus sp.
title_short Optimization of phenol degradation by Antarctic bacterium Rhodococcus sp.
title_full Optimization of phenol degradation by Antarctic bacterium Rhodococcus sp.
title_fullStr Optimization of phenol degradation by Antarctic bacterium Rhodococcus sp.
title_full_unstemmed Optimization of phenol degradation by Antarctic bacterium Rhodococcus sp.
title_sort optimization of phenol degradation by antarctic bacterium rhodococcus sp.
publisher Cambridge University Press
publishDate 2020
url http://psasir.upm.edu.my/id/eprint/87009/1/Optimization%20of%20phenol%20degradation%20by%20Antarctic%20bacterium%20Rhodococcus%20sp.pdf
http://psasir.upm.edu.my/id/eprint/87009/
https://www.cambridge.org/core/journals/antarctic-science/article/abs/optimization-of-phenol-degradation-by-antarctic-bacterium-rhodococcus-sp/F8D5DF954D20817694C3012369651D34
_version_ 1724075486993186816
score 13.251813

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