Factors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts

The discharge of hydrocarbons and their derivatives to environments due to human and/or natural activities cause environmental pollution (soil, water, and air) and affect the natural functioning of an ecosystem. To minimize or eradicate environmental pollution by hydrocarbon contaminants, studies sh...

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Autores principales:	Gessesse Kebede, Tekle Tafese, Ebrahim M. Abda, M. Kamaraj, Fassil Assefa
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/06343bf669f74a3a8e19bee96f5b80f4
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spelling	oai:doaj.org-article:06343bf669f74a3a8e19bee96f5b80f42021-11-29T00:55:49ZFactors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts2090-907110.1155/2021/9823362https://doaj.org/article/06343bf669f74a3a8e19bee96f5b80f42021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/9823362https://doaj.org/toc/2090-9071The discharge of hydrocarbons and their derivatives to environments due to human and/or natural activities cause environmental pollution (soil, water, and air) and affect the natural functioning of an ecosystem. To minimize or eradicate environmental pollution by hydrocarbon contaminants, studies showed strategies including physical, chemical, and biological approaches. Among those strategies, the use of biological techniques (especially bacterial biodegradation) is critically important to remove hydrocarbon contaminants. The current review discusses the insights of major factors that enhance or hinder the bacterial bioremediation of hydrocarbon contaminants (aliphatic, aromatic, and polyaromatic hydrocarbons) in the soil. The key factors limiting the overall hydrocarbon biodegradation are generally categorized as biotic factors and abiotic factors. Among various environmental factors, temperature range from 30 to 40°C, pH range from 5 to 8, moisture availability range from 30 to 90%, carbon/nitrogen/phosphorous (C/N/P; 100:20:1) ratio, and 10–40% of oxygen for aerobic degradation are the key factors that show positive correlation for greatest hydrocarbon biodegradation rate by altering the activities of the microbial and degradative enzymes in soil. In addition, the formation of biofilm and production of biosurfactants in hydrocarbon-polluted soil environments increase microbial adaptation to low bioavailability of hydrophobic compounds, and genes that encode for hydrocarbon degradative enzymes are critical for the potential of microbes to bioremediate soils contaminated with hydrocarbon pollutants. Therefore, this review works on the identification of factors for effective hydrocarbon biodegradation, understanding, and optimization of those factors that are essential and critical.Gessesse KebedeTekle TafeseEbrahim M. AbdaM. KamarajFassil AssefaHindawi LimitedarticleChemistryQD1-999ENJournal of Chemistry, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemistry QD1-999
spellingShingle	Chemistry QD1-999 Gessesse Kebede Tekle Tafese Ebrahim M. Abda M. Kamaraj Fassil Assefa Factors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts
description	The discharge of hydrocarbons and their derivatives to environments due to human and/or natural activities cause environmental pollution (soil, water, and air) and affect the natural functioning of an ecosystem. To minimize or eradicate environmental pollution by hydrocarbon contaminants, studies showed strategies including physical, chemical, and biological approaches. Among those strategies, the use of biological techniques (especially bacterial biodegradation) is critically important to remove hydrocarbon contaminants. The current review discusses the insights of major factors that enhance or hinder the bacterial bioremediation of hydrocarbon contaminants (aliphatic, aromatic, and polyaromatic hydrocarbons) in the soil. The key factors limiting the overall hydrocarbon biodegradation are generally categorized as biotic factors and abiotic factors. Among various environmental factors, temperature range from 30 to 40°C, pH range from 5 to 8, moisture availability range from 30 to 90%, carbon/nitrogen/phosphorous (C/N/P; 100:20:1) ratio, and 10–40% of oxygen for aerobic degradation are the key factors that show positive correlation for greatest hydrocarbon biodegradation rate by altering the activities of the microbial and degradative enzymes in soil. In addition, the formation of biofilm and production of biosurfactants in hydrocarbon-polluted soil environments increase microbial adaptation to low bioavailability of hydrophobic compounds, and genes that encode for hydrocarbon degradative enzymes are critical for the potential of microbes to bioremediate soils contaminated with hydrocarbon pollutants. Therefore, this review works on the identification of factors for effective hydrocarbon biodegradation, understanding, and optimization of those factors that are essential and critical.
format	article
author	Gessesse Kebede Tekle Tafese Ebrahim M. Abda M. Kamaraj Fassil Assefa
author_facet	Gessesse Kebede Tekle Tafese Ebrahim M. Abda M. Kamaraj Fassil Assefa
author_sort	Gessesse Kebede
title	Factors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts
title_short	Factors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts
title_full	Factors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts
title_fullStr	Factors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts
title_full_unstemmed	Factors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts
title_sort	factors influencing the bacterial bioremediation of hydrocarbon contaminants in the soil: mechanisms and impacts
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/06343bf669f74a3a8e19bee96f5b80f4
work_keys_str_mv	AT gessessekebede factorsinfluencingthebacterialbioremediationofhydrocarboncontaminantsinthesoilmechanismsandimpacts AT tekletafese factorsinfluencingthebacterialbioremediationofhydrocarboncontaminantsinthesoilmechanismsandimpacts AT ebrahimmabda factorsinfluencingthebacterialbioremediationofhydrocarboncontaminantsinthesoilmechanismsandimpacts AT mkamaraj factorsinfluencingthebacterialbioremediationofhydrocarboncontaminantsinthesoilmechanismsandimpacts AT fassilassefa factorsinfluencingthebacterialbioremediationofhydrocarboncontaminantsinthesoilmechanismsandimpacts
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Factors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts

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