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Abstract

INSIGHT OF VARIOUS ENVIRONMENTAL DERIVED POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) AND CONSEQUENCES ON LIVING ORGANISMS FROM THE SOIL-A REVIEW

S. Rajakumar, Anusha Satheesh*, Ashok, A. Umadevi, V. Akila

ABSTRACT

The environmental destiny of polycyclic aromatic hydrocarbons (PAH) is a significant issue, raising interest in bioremediation. However, the physio-chemical characteristics of PAHs and the physical, chemical, and biological properties of soils can drastically influence in the degradation. Moreover, PAHs are toxic and carcinogenic for humans and their rapid degradation is of great importance. In general the biodegradation of nonchlorinated aliphatic and aromatic hydrocarbons is influenced by their bioavailability. Hydrocarbons are very poorly soluble in water. They are easily adsorbed to clay or humus fractions in the soil, and pass very slowly to the aqueous phase, where they are metabolized by microorganisms. Surfactants that increase their solubility and improve their bioavailability can thereby accelerate degradation. Biodegradation of diesel oil was performed using a diesel oil-degrading bacterial consortium, in both laboratory and pilot scale experiments. Microbial degradation is used as a primary method for the elimination of PAHs from the environment. Although many microorganisms are able to utilize these organic compounds as a substrate and energy source for their growth, these compounds, especially high molecular weight PAHs, are considered as recalcitrant molecules due to their low solubility in water. Environmental pollution with petroleum and petrochemical products has attracted much attention in recent decades. Purpose of this study was the pollutants encompass negative effects on environmental quality and human health so detoxify or remediate the Hydrocarbonated pollutants from our environment. Apart from this study revealed the significant was after the remediate soil was processed to agricultural purpose for growing many crops. However, their carving on environment is due to the rapid industrial enterprise of agribusiness, expanded chemical industry and the need to generate cheap forms of energy The presence of different types of automobiles and machinery has resulted in an increase in the use of lubricating oil.

Keywords: Hydrocarbon soil, Xenobiotics, Oil spill, Petroleum, Biodegradation, Environment.


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