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A comparison of technologies for remediation of heavy metal contaminated soils

Khalid, Sana and Shahid, Muhammad and Niazi, Nabeel Khan and Murtaza, Behzad and Bibi, Irshad and Dumat, Camille A comparison of technologies for remediation of heavy metal contaminated soils. (2017) Journal of Geochemical Exploration, 182 (part B). 247-268. ISSN 0375-6742

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Official URL: http://dx.doi.org/10.1016/j.gexplo.2016.11.021

Abstract

Soil contamination with persistent and potentially (eco)toxic heavy metal(loid)s is ubiquitous around the globe. Concentration of these heavy metal(loid)s in soil has increased drastically over the last three decades, thus posing risk to the environment and human health. Some technologies have long been in use to remediate the hazardous heavy metal(loid)s. Conventional remediation methods for heavy metal(loid)s are generally based on physical, chemical and biological approaches, which may be used in combination with one another to clean-up heavy metal(loid) contaminated soils to an acceptable and safe level. This review summarizes the soil contamination by heavy metal(loid)s at a global scale, accumulation of heavy metal(loid)s in vegetables to toxic levels and their regulatory guidelines in soil. In this review, we also elucidate and compare the pool of available technologies that are currently being applied for remediation of heavy metal(loid) contaminated soils, as well as the economic aspect of soil remediation for different techniques. This review article includes an assessment of the contemporary status of technology deployment and recommendations for future remediation research. Finally, the molecular and genetic basis of heavy metal(loid) (hyper)accumulation and tolerance in microbes and plants is also discussed. It is proposed that for effective and economic remediation of soil, a better understanding of remediation procedures and the various options available at the different stages of remediation is highly necessary.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available on Journal of Geochemical Exploration website: http://www.sciencedirect.com/science/article/pii/S0375674216303818?via%3Dihub
HAL Id:hal-01577861
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > COMSATS Institute of Information Technology - CIIT (PAKISTAN)
Other partners > Southern Cross University - SCU (AUSTRALIA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Other partners > University of Agriculture Faisalabad - UAF (PAKISTAN)
Other partners > Universität Bremen (GERMANY)
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Deposited On:28 Aug 2017 10:02

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