The Role of Microorganisms in the Bioremediation of Oil Pollution in Marine Environments
Subject Areas : Biotechnological Journal of Environmental MicrobiologyAmirhossein Khorramian 1 * , Fatemeh Mousalou 2
1 - Department of Microbiology, La.C., Islamic Azad University, Lahijan, Iran
2 - Department of Microbiology, Ard.c., Islamic Azad University, Ardabil, Iran
Keywords: Petroleum hydrocarbons (PHCs), Bioremediation, oil-degrading microorganisms , degrading bacteria,
Abstract :
Due to increased human activities in marine waters, there is growing worry about the rising number of petroleum hydrocarbon spills and spillage into various marine environments. Petroleum hydrocarbon pollution caused by operations in the oil and gas industry, such as oil spills, tank leaks, lubrication, petroleum extraction, transportation, and services. Spilled petroleum hydrocarbons in marine water contain toxic substances that cause the instant death of many marine species and start a number of harmful cycles. The contamination of marine sediments or coastal regions by PHCs is a significant danger to the environment and human health.One of the most promising approaches in this area is biological therapy, which employs microorganisms like bacteria, fungus, and algae to break down organic matter. of pollutants like the released petroleum hydrocarbon into harmless or ecologically benign substances.Bioremediation methods that employ microbes are becoming more popular due to their environmental friendliness and reduced expenses.Nitratireductor , Pseudonocardia and Acinetobacter are the most common types of oil-degrading bacteria.The majority of strains were capable of breaking down petroleum components with a high molecular weight. Additionally, Pseudonocardia was discovered for the first time to have a strong capacity for breaking down phytane and pristine. Consortia, such as bacteria–bacteria, bacteria–fungi, and bacteria–microalgae, which may complement one another, such as microalgae or fungi that promote the development of oil-degrading bacteria or biosurfactant-producing bacteria with different oil-degrading microorganisms. Bioremediation still has a long way to go, but recent advancements have demonstrated potential, and it continues to be the most cost-effective, ecologically friendly and efficient method. Approach to handling oil spills.Additionally, we examine the obstacles posed by novel molecular techniques for creating successful reclamation strategies based on these three microbial components of hydrocarbon-contaminated marine sediments.
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