The Experts below are selected from a list of 35397 Experts worldwide ranked by ideXlab platform
Muhammad Anwar Sajad - One of the best experts on this subject based on the ideXlab platform.
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Phytoremediation of heavy metals concepts and applications
Chemosphere, 2013Co-Authors: Ezzat Khan, Muhammad Anwar SajadAbstract:The mobilization of heavy metals by man through extraction from ores and processing for different applications has led to the release of these elements into the environment. Since heavy metals are nonbiodegradable, they accumulate in the environment and subsequently contaminate the food chain. This contamination poses a risk to environmental and human health. Some heavy metals are carcinogenic, mutagenic, teratogenic and endocrine disruptors while others cause neurological and behavioral changes especially in children. Thus remediation of heavy metal pollution deserves due attention. Different physical and chemical methods used for this purpose suffer from serious limitations like high cost, intensive labor, alteration of soil properties and disturbance of soil native microflora. In contrast, Phytoremediation is a better solution to the problem. Phytoremediation is the use of plants and associated soil microbes to reduce the concentrations or toxic effects of contaminants in the environments. It is a relatively recent technology and is perceived as cost-effective, efficient, novel, eco-friendly, and solar-driven technology with good public acceptance. Phytoremediation is an area of active current research. New efficient metal hyperaccumulators are being explored for applications in Phytoremediation and phytomining. Molecular tools are being used to better understand the mechanisms of metal uptake, translocation, sequestration and tolerance in plants. This review article comprehensively discusses the background, concepts and future trends in Phytoremediation of heavy metals.
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Phytoremediation of heavy metals-Concepts and applications
Chemosphere, 2013Co-Authors: Hazrat Ali, Ezzat Khan, Muhammad Anwar SajadAbstract:The mobilization of heavy metals by man through extraction from ores and processing for different applications has led to the release of these elements into the environment. Since heavy metals are nonbiodegradable, they accumulate in the environment and subsequently contaminate the food chain. This contamination poses a risk to environmental and human health. Some heavy metals are carcinogenic, mutagenic, teratogenic and endocrine disruptors while others cause neurological and behavioral changes especially in children. Thus remediation of heavy metal pollution deserves due attention. Different physical and chemical methods used for this purpose suffer from serious limitations like high cost, intensive labor, alteration of soil properties and disturbance of soil native microflora. In contrast, Phytoremediation is a better solution to the problem. Phytoremediation is the use of plants and associated soil microbes to reduce the concentrations or toxic effects of contaminants in the environments. It is a relatively recent technology and is perceived as cost-effective, efficient, novel, eco-friendly, and solar-driven technology with good public acceptance. Phytoremediation is an area of active current research. New efficient metal hyperaccumulators are being explored for applications in Phytoremediation and phytomining. Molecular tools are being used to better understand the mechanisms of metal uptake, translocation, sequestration and tolerance in plants. This review article comprehensively discusses the background, concepts and future trends in Phytoremediation of heavy metals. © 2013 Elsevier Ltd.
C Watson - One of the best experts on this subject based on the ideXlab platform.
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Phytoremediation of heavy metal contaminated land by trees a review
Environment International, 2003Co-Authors: I D Pulford, C WatsonAbstract:This paper reviews the potential for using trees for the Phytoremediation of heavy metal-contaminated land. It considers the following aspects: metal tolerance in trees, heavy metal uptake by trees grown on contaminated substrates, heavy metal compartmentalisation within trees, Phytoremediation using trees and the Phytoremediation potential of willow (Salix spp.).
Ezzat Khan - One of the best experts on this subject based on the ideXlab platform.
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Phytoremediation of heavy metals concepts and applications
Chemosphere, 2013Co-Authors: Ezzat Khan, Muhammad Anwar SajadAbstract:The mobilization of heavy metals by man through extraction from ores and processing for different applications has led to the release of these elements into the environment. Since heavy metals are nonbiodegradable, they accumulate in the environment and subsequently contaminate the food chain. This contamination poses a risk to environmental and human health. Some heavy metals are carcinogenic, mutagenic, teratogenic and endocrine disruptors while others cause neurological and behavioral changes especially in children. Thus remediation of heavy metal pollution deserves due attention. Different physical and chemical methods used for this purpose suffer from serious limitations like high cost, intensive labor, alteration of soil properties and disturbance of soil native microflora. In contrast, Phytoremediation is a better solution to the problem. Phytoremediation is the use of plants and associated soil microbes to reduce the concentrations or toxic effects of contaminants in the environments. It is a relatively recent technology and is perceived as cost-effective, efficient, novel, eco-friendly, and solar-driven technology with good public acceptance. Phytoremediation is an area of active current research. New efficient metal hyperaccumulators are being explored for applications in Phytoremediation and phytomining. Molecular tools are being used to better understand the mechanisms of metal uptake, translocation, sequestration and tolerance in plants. This review article comprehensively discusses the background, concepts and future trends in Phytoremediation of heavy metals.
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Phytoremediation of heavy metals-Concepts and applications
Chemosphere, 2013Co-Authors: Hazrat Ali, Ezzat Khan, Muhammad Anwar SajadAbstract:The mobilization of heavy metals by man through extraction from ores and processing for different applications has led to the release of these elements into the environment. Since heavy metals are nonbiodegradable, they accumulate in the environment and subsequently contaminate the food chain. This contamination poses a risk to environmental and human health. Some heavy metals are carcinogenic, mutagenic, teratogenic and endocrine disruptors while others cause neurological and behavioral changes especially in children. Thus remediation of heavy metal pollution deserves due attention. Different physical and chemical methods used for this purpose suffer from serious limitations like high cost, intensive labor, alteration of soil properties and disturbance of soil native microflora. In contrast, Phytoremediation is a better solution to the problem. Phytoremediation is the use of plants and associated soil microbes to reduce the concentrations or toxic effects of contaminants in the environments. It is a relatively recent technology and is perceived as cost-effective, efficient, novel, eco-friendly, and solar-driven technology with good public acceptance. Phytoremediation is an area of active current research. New efficient metal hyperaccumulators are being explored for applications in Phytoremediation and phytomining. Molecular tools are being used to better understand the mechanisms of metal uptake, translocation, sequestration and tolerance in plants. This review article comprehensively discusses the background, concepts and future trends in Phytoremediation of heavy metals. © 2013 Elsevier Ltd.
Xiyan Yang - One of the best experts on this subject based on the ideXlab platform.
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Phytoremediation of heavy metals assisted by plant growth promoting pgp bacteria a review
Environmental and Experimental Botany, 2015Co-Authors: Abid Ullah, Sun Heng, Muhammad Farooq Hussain Munis, Shah Fahad, Xiyan YangAbstract:Continued industrialization, agricultural practices, and other anthropogenic activities lead to heavy metals contamination. Heavy metals have severe toxic effects on plants, animals, and human health, and therefore their remediation is crucial. Among the various techniques used, Phytoremediation is one of the safest, most innovative, and effective tools for the remediation of heavy metals. Phytoremediation of toxic metals and metalloids has been reported by researchers using a variety of plants. The efficiency of Phytoremediation can be enhanced by the assistance of plant growth promoting (PGP) bacteria. These bacteria transform metals into bioavailable and soluble forms through the action of siderophores, organic acids, biosurfactants, biomethylation, and redox processes. In addition, PGP bacteria possess growth-promoting traits, including phosphorus solubilization, nitrogen fixation, iron sequestration, and phytohormone and ACC (1-aminocyclopropane-1-carboxylic acid) deaminase synthesis, which improve plant growth and increase plant biomass, in turn assisting Phytoremediation. Our current review of the literature highlights the potential of PGP bacteria, which facilitate Phytoremediation of heavy metals in contaminated areas.
Li Wei-xiang - One of the best experts on this subject based on the ideXlab platform.
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Understanding molecular mechanisms for improving Phytoremediation of heavy metal-contaminated soils
Critical Reviews in Biotechnology, 2010Co-Authors: Shao Hong-bo, Ruan Cheng-jiang, Guo Dong-gang, Li Hua, Li Wei-xiangAbstract:Heavy metal pollution of soil is a significant environmental problem with a negative potential impact on human health and agriculture. Rhizosphere, as an important interface of soil and plants, plays a significant role in Phytoremediation of contaminated soil by heavy metals, in which, microbial populations are known to affect heavy metal mobility and availability to the plant through release of chelating agents, acidification, phosphate solubilization and redox changes, and therefore, have potential to enhance Phytoremediation processes. Phytoremediation strategies with appropriate heavy metal-adapted rhizobacteria or mycorrhizas have received more and more attention. In addition, some plants possess a range of potential mechanisms that may be involved in the detoxification of heavy metals, and they manage to survive under metal stresses. High tolerance to heavy metal toxicity could rely either on reduced uptake or increased plant internal sequestration, which is manifested by an interaction between a genotype and its environment.A coordinated network of molecular processes provides plants with multiple metal-detoxifying mechanisms and repair capabilities. The growing application of molecular genetic technologies has led to an increased understanding of mechanisms of heavy metal tolerance/accumulation in plants and, subsequently, many transgenic plants with increased heavy metal resistance, as well as increased uptake of heavy metals, have been developed for the purpose of Phytoremediation. This article reviews advantages, possible mechanisms, current status and future direction of Phytoremediation for heavy-metal-contaminated soils.
