Decontaminating soil organic pollutants with manufactured nanoparticles |
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Authors: | Qi Li Xijuan Chen Jie Zhuang Xin Chen |
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Institution: | 1.Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang,China;2.University of Chinese Academy of Sciences,Beijing,China;3.Department of Biosystems Engineering and Soil Science, Institute for a Secure and Sustainable Environment,The University of Tennessee,Knoxville,USA |
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Abstract: | Organic pollutants in soils might threaten the environmental and human health. Manufactured nanoparticles are capable to reduce this risk efficiently due to their relatively large capacity of sorption and degradation of organic pollutants. Stability, mobility, and reactivity of nanoparticles are prerequisites for their efficacy in soil remediation. On the basis of a brief introduction of these issues, this review provides a comprehensive summary of the application and effectiveness of various types of manufactured nanoparticles for removing organic pollutants from soil. The main categories of nanoparticles include iron (oxides), titanium dioxide, carbonaceous, palladium, and amphiphilic polymeric nanoparticles. Their advantages (e.g., unique properties and high sorption capacity) and disadvantages (e.g., high cost and low recovery) for soil remediation are discussed with respect to the characteristics of organic pollutants. The factors that influence the decontamination effects, such as properties, surfactants, solution chemistry, and soil organic matter, are addressed. |
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