Science Target Conference Systems, Ajman 4th International Environment Conference 2016

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Phytoremediation of contaminated soils by an industrial crop: Green technology to clean up soil
Sarra Arbaoui

Last modified: 2015-08-23

Abstract


Excessive levels of trace metals in agricultural land constitute an increasingly serious threat for environment and human health. Among metals, metals occur naturally in soil, but concentrations are rising unnaturally, due to addition of metals through human activities. Phytoremediation is a green technology based on the use of selected plants to remove, degrades or contains pollutants. The use of trace metal-accumulating plants for environmental cleanup is an emerging technology called phytoextraction. The relatively low cost of phytoremediation allows the treatment of many sites that cannot be addressed with physic-chemicals methods. In addition, it preserves the topsoil and reduces the amount of hazardous materials generated during cleanup. The potential of kenaf (Hibiscus cannabinus L.) for phytoremediation on contaminated soil was investigated. Kenaf is annual specie belongs to malvaceae family, fast growing and high biomass producing able to tolerate different environment conditions. It is considered as an important bast fiber crop and highly cultivated for its fibrous stem used in many industrial applications such as textile, biocomposites, insulation material.

kenaf plants have been grown in pots containing different concentrations of zinc and cadmium. The observations made were for biomass production and zinc and cadmium content in different organs determinate by atomic emission spectrometry. Results showed that zinc and cadmium was found in kenaf plants at different levels. Tolerance and accumulation potential and biomass productivity indicated that kenaf can be used in a phytoremediantion process of zinc and cadmium contaminated soils.