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        1 - The Use of Microorganisms In Bioremediation Of Heavy Methals In Soils
        jina tanzadeh Mohammad panahandeh
        Bioremediation is an promising and available new technique for removal and recovery of heavy metals in contaminated land and waters. These microorganisms developed Different detoxifying mechanisms such as bioaccumulation, biosorption, biomineralization and biotrans More
        Bioremediation is an promising and available new technique for removal and recovery of heavy metals in contaminated land and waters. These microorganisms developed Different detoxifying mechanisms such as bioaccumulation, biosorption, biomineralization and biotransformation.The food and water we consume are often pulluted very of chemicals and heavy metals, such as gold,copper ,nickel, zinc, cadmium, arsenic, lead, chromium, and mercury that are associated with very diseases.Some studies described microorganism able to bioremediation heavy methas. Among others some of the microorganisms that play great role in bioremediation of heavy metals are Pseudomonas spp ,Corynebacterium spp ,Bacillus spp Arthrobacter spp, Alcaligenes spp, Rhodococcus spp, Flavobacterium spp, Nocardia spp, Azetobacter spp, Methosinus, Phormidium valderium. Manuscript profile
      • Open Access Article

        2 - Study of the different microbial biodegradation methods efficiency in the removal of crude oil hydrocarbon contaminants
        Farhood Navaie Abbas Hashemizadeh
        Petroleum hydrocarbon pollutants are one of the hardest compounds in terms of decomposition and control and classified as stable and important organic pollutants that have adverse effects on human health and the environment and combating environmental pollution caused b More
        Petroleum hydrocarbon pollutants are one of the hardest compounds in terms of decomposition and control and classified as stable and important organic pollutants that have adverse effects on human health and the environment and combating environmental pollution caused by them is an important issue for the world and human societies. Although the removal of these pollutants from the environment is a major problem, biodegradation (which uses natural microbial biodegradation activity) is an ecofriendly and economical approach to control these types of contaminants and has become a pivotal method of cleaning up environments contaminated with petroleum hydrocarbons. The present study provides a comprehensive, uptodate and efficient review of the bioremediation of petroleum hydrocarbon pollutants, taking into account the hydrocarbon alterations in microorganisms with a particular focus on the new insights gained in recent years. Also, the metabolism of hydrocarbons in microorganisms has been described by reviewing research presented in recent years. The results of studies show well that petroleum hydrocarbon pollutants are biodegradable using some microorganisms such as oleophilic and their removal by this method is cost-effective and economical. Microbial biodegradation of petroleum hydrocarbon contaminants uses the enzymatic catalytic activities of microorganisms to increase the degradation of contaminants several times more than traditional methods Manuscript profile