Microorganism’s application strategy for bio-phytoremediation of heavy metal: A review

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Microorganism’s application strategy for bio-phytoremediation of heavy metal: A review

Ebrahim Shirmohammadi, Mojtaba Khaje, Mohammadreza Shirdali, Ghasem Hosein Talaei, Hassan Shahgholi
J. Bio. Env. Sci.5( 3), 289-298, September 2014.
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Phytoremediation is a group of technologies that use plants to reduce, remove, de- grade, or immobilize environmental toxins, primarily those of anthropogenic origin, with the aim of restoring area sites to a condition useable for private or public applications. Phytoremediation efforts have largely focused on the use of plants to accelerate degradation of organic contaminants, usually in concert with root rhizosphere microorganisms, or remove hazardous heavy metals from soils or water. Phytoremediation of contaminated sites is a relatively inexpensive and aesthetically pleasing to the public compared to alternate remediation strategies involving excavation/removal or chemical in situ stabilization/conversion. Their potential role in phytoremediation of heavy metal (HM) contaminated soils and water is becoming evident although there is need to completely understand the ecological complexities of the plant-microbe-soil interactions and their better exploitation as consortia in remediation strategies employed for contaminated soils. The use of metal-accumulating plants to clean soil and water contaminated with toxic metals is the most rapidly developing component of this environmentally friendly and cost-effective technology. The recent discovery that certain chelating agents greatly facilitate metal uptake by soil-grown plants can make this technology a commercial reality in the near future.


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