Bioremediation of soils saturated with spilled crude oil

Abstract A desert soil sample was saturated with crude oil (17.3%, w/w) and aliquots were diluted to different extents with either pristine desert or garden soils. Heaps of all samples were exposed to outdoor conditions through six months, and were repeatedly irrigated with water and mixed thoroughl...

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Autores principales:	Nedaa Ali, Narjes Dashti, Majida Khanafer, Husain Al-Awadhi, Samir Radwan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ee995d9d7ae04011a0b9994da7c1b06d
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spelling	oai:doaj.org-article:ee995d9d7ae04011a0b9994da7c1b06d2021-12-02T15:23:40ZBioremediation of soils saturated with spilled crude oil10.1038/s41598-019-57224-x2045-2322https://doaj.org/article/ee995d9d7ae04011a0b9994da7c1b06d2020-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-57224-xhttps://doaj.org/toc/2045-2322Abstract A desert soil sample was saturated with crude oil (17.3%, w/w) and aliquots were diluted to different extents with either pristine desert or garden soils. Heaps of all samples were exposed to outdoor conditions through six months, and were repeatedly irrigated with water and mixed thoroughly. Quantitative determination of the residual oil in the samples revealed that oil-bioremediation in the undiluted heaps was nearly as equally effective as in the diluted ones. One month after starting the experiment. 53 to 63% of oil was removed. During the subsequent five months, 14 to 24% of the oil continued to be consumed. The dynamics of the hydrocarbonoclastic bacterial communities in the heaps was monitored. The highest numbers of those organisms coordinated chronologically with the maximum oil-removal. Out of the identified bacterial species, those affiliated with the genera Nocardioides (especially N. deserti), Dietzia (especially D. papillomatosis), Microbacterium, Micrococcus, Arthrobacter, Pseudomonas, Cellulomonas, Gordonia and others were main contributors to the oil-consumption. Some species, e.g. D. papillomatosis were minor community constituents at time zero but they prevailed at later phases. Most isolates tolerated up to 20% oil, and D. papillomatosis showed the maximum tolerance compared with all the other studied isolates. It was concluded that even in oil-saturated soil, self-cleaning proceeds at a normal rate. When pristine soil receives spilled oil, indigenous microorganisms suitable for dealing with the prevailing oil-concentrations become enriched and involved in oil-biodegradation.Nedaa AliNarjes DashtiMajida KhanaferHusain Al-AwadhiSamir RadwanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nedaa Ali Narjes Dashti Majida Khanafer Husain Al-Awadhi Samir Radwan Bioremediation of soils saturated with spilled crude oil
description	Abstract A desert soil sample was saturated with crude oil (17.3%, w/w) and aliquots were diluted to different extents with either pristine desert or garden soils. Heaps of all samples were exposed to outdoor conditions through six months, and were repeatedly irrigated with water and mixed thoroughly. Quantitative determination of the residual oil in the samples revealed that oil-bioremediation in the undiluted heaps was nearly as equally effective as in the diluted ones. One month after starting the experiment. 53 to 63% of oil was removed. During the subsequent five months, 14 to 24% of the oil continued to be consumed. The dynamics of the hydrocarbonoclastic bacterial communities in the heaps was monitored. The highest numbers of those organisms coordinated chronologically with the maximum oil-removal. Out of the identified bacterial species, those affiliated with the genera Nocardioides (especially N. deserti), Dietzia (especially D. papillomatosis), Microbacterium, Micrococcus, Arthrobacter, Pseudomonas, Cellulomonas, Gordonia and others were main contributors to the oil-consumption. Some species, e.g. D. papillomatosis were minor community constituents at time zero but they prevailed at later phases. Most isolates tolerated up to 20% oil, and D. papillomatosis showed the maximum tolerance compared with all the other studied isolates. It was concluded that even in oil-saturated soil, self-cleaning proceeds at a normal rate. When pristine soil receives spilled oil, indigenous microorganisms suitable for dealing with the prevailing oil-concentrations become enriched and involved in oil-biodegradation.
format	article
author	Nedaa Ali Narjes Dashti Majida Khanafer Husain Al-Awadhi Samir Radwan
author_facet	Nedaa Ali Narjes Dashti Majida Khanafer Husain Al-Awadhi Samir Radwan
author_sort	Nedaa Ali
title	Bioremediation of soils saturated with spilled crude oil
title_short	Bioremediation of soils saturated with spilled crude oil
title_full	Bioremediation of soils saturated with spilled crude oil
title_fullStr	Bioremediation of soils saturated with spilled crude oil
title_full_unstemmed	Bioremediation of soils saturated with spilled crude oil
title_sort	bioremediation of soils saturated with spilled crude oil
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/ee995d9d7ae04011a0b9994da7c1b06d
work_keys_str_mv	AT nedaaali bioremediationofsoilssaturatedwithspilledcrudeoil AT narjesdashti bioremediationofsoilssaturatedwithspilledcrudeoil AT majidakhanafer bioremediationofsoilssaturatedwithspilledcrudeoil AT husainalawadhi bioremediationofsoilssaturatedwithspilledcrudeoil AT samirradwan bioremediationofsoilssaturatedwithspilledcrudeoil
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Bioremediation of soils saturated with spilled crude oil

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