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Multiwall carbon nanotubes increase the microbial community in crude oil contaminated fresh water sediments.

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Title: Multiwall carbon nanotubes increase the microbial community in crude oil contaminated fresh water sediments.
Authors: Abbasian, Firouz1,2 Firouz.abbasian@gmail.com, Lockington, Robin3 Robin.Lockington@unisa.edu.au, Palanisami, Thavamani1,2 Thava.Palanisami@newcastle.edu.au, Megharaj, Mallavarapu1,2 Megh.Mallavarapu@newcastle.edu.au, Naidu, Ravi1,2 Ravi.Naidu@newcastle.edu.au
Source: Science of the Total Environment. Jan2016, Vol. 539, p370-380. 11p.
Subjects: Multiwalled carbon nanotubes, Petroleum & the environment, Water pollution, Sediments, Hazardous waste sites, Bioremediation, Hydrocarbons & the environment
Abstract: Since crude oil contamination is one of the biggest environmental concerns, its removal from contaminated sites is of interest for both researchers and industries. In situ bioremediation is a promising technique for decreasing or even eliminating crude oil and hydrocarbon contamination. However, since these compounds are potentially toxic for many microorganisms, high loads of contamination can inhibit the microbial community and therefore reduce the removal rate. Therefore, any strategy with the ability to increase the microbial population in such circumstances can be of promise in improving the remediation process. In this study, multiwall carbon nanotubes were employed to support microbial growth in sediments contaminated with crude oil. Following spiking of fresh water sediments with different concentrations of crude oil alone and in a mixture with carbon nanotubes for 30 days, the microbial profiles in these sediments were obtained using FLX-pyrosequencing. Next, the ratios of each member of the microbial population in these sediments were compared with those values in the untreated control sediment. This study showed that combination of crude oil and carbon nanotubes can increase the diversity of the total microbial population. Furthermore, these treatments could increase the ratios of several microorganisms that are known to be effective in the degradation of hydrocarbons. [ABSTRACT FROM AUTHOR]
Copyright of Science of the Total Environment is the property of Elsevier B.V. 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: Engineering Source
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DbLabel: Engineering Source
An: 110101459
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Multiwall carbon nanotubes increase the microbial community in crude oil contaminated fresh water sediments.
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  Data: <searchLink fieldCode="AR" term="%22Abbasian%2C+Firouz%22">Abbasian, Firouz</searchLink><relatesTo>1,2</relatesTo><i> Firouz.abbasian@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Lockington%2C+Robin%22">Lockington, Robin</searchLink><relatesTo>3</relatesTo><i> Robin.Lockington@unisa.edu.au</i><br /><searchLink fieldCode="AR" term="%22Palanisami%2C+Thavamani%22">Palanisami, Thavamani</searchLink><relatesTo>1,2</relatesTo><i> Thava.Palanisami@newcastle.edu.au</i><br /><searchLink fieldCode="AR" term="%22Megharaj%2C+Mallavarapu%22">Megharaj, Mallavarapu</searchLink><relatesTo>1,2</relatesTo><i> Megh.Mallavarapu@newcastle.edu.au</i><br /><searchLink fieldCode="AR" term="%22Naidu%2C+Ravi%22">Naidu, Ravi</searchLink><relatesTo>1,2</relatesTo><i> Ravi.Naidu@newcastle.edu.au</i>
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  Data: <searchLink fieldCode="JN" term="%22Science+of+the+Total+Environment%22">Science of the Total Environment</searchLink>. Jan2016, Vol. 539, p370-380. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Multiwalled+carbon+nanotubes%22">Multiwalled carbon nanotubes</searchLink><br /><searchLink fieldCode="DE" term="%22Petroleum+%26+the+environment%22">Petroleum & the environment</searchLink><br /><searchLink fieldCode="DE" term="%22Water+pollution%22">Water pollution</searchLink><br /><searchLink fieldCode="DE" term="%22Sediments%22">Sediments</searchLink><br /><searchLink fieldCode="DE" term="%22Hazardous+waste+sites%22">Hazardous waste sites</searchLink><br /><searchLink fieldCode="DE" term="%22Bioremediation%22">Bioremediation</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrocarbons+%26+the+environment%22">Hydrocarbons & the environment</searchLink>
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  Data: Since crude oil contamination is one of the biggest environmental concerns, its removal from contaminated sites is of interest for both researchers and industries. In situ bioremediation is a promising technique for decreasing or even eliminating crude oil and hydrocarbon contamination. However, since these compounds are potentially toxic for many microorganisms, high loads of contamination can inhibit the microbial community and therefore reduce the removal rate. Therefore, any strategy with the ability to increase the microbial population in such circumstances can be of promise in improving the remediation process. In this study, multiwall carbon nanotubes were employed to support microbial growth in sediments contaminated with crude oil. Following spiking of fresh water sediments with different concentrations of crude oil alone and in a mixture with carbon nanotubes for 30 days, the microbial profiles in these sediments were obtained using FLX-pyrosequencing. Next, the ratios of each member of the microbial population in these sediments were compared with those values in the untreated control sediment. This study showed that combination of crude oil and carbon nanotubes can increase the diversity of the total microbial population. Furthermore, these treatments could increase the ratios of several microorganisms that are known to be effective in the degradation of hydrocarbons. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science of the Total Environment is the property of Elsevier B.V. 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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        Value: 10.1016/j.scitotenv.2015.09.031
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      – Code: eng
        Text: English
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        PageCount: 11
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        Type: general
      – SubjectFull: Petroleum & the environment
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      – SubjectFull: Water pollution
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      – SubjectFull: Sediments
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      – SubjectFull: Bioremediation
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      – SubjectFull: Hydrocarbons & the environment
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      – TitleFull: Multiwall carbon nanotubes increase the microbial community in crude oil contaminated fresh water sediments.
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              Text: Jan2016
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