Potential of Cyperus alternifolius, Amaranthus retroflexus, Closia cristata and Bambusa vulgaris to phytoremediate emerging contaminants and phytodesalination; Insight to floating beds technology

The main aim of this study is to consider the potential of different aquatic and terrestrial plants (Cyperus alternifolius, Amaranthus retroflexus, Closia cristata and Bambusa vulgaris( for phytoremediation of pollutants and phytodesalination through floating bed system. In this study, when Cyperus alternifolius  plants were exposed to atrazine) ۲۰ mg L -۱(, OPC-LD )۲۰ mg L -۱(, OPC-LD )۵۰ mg L -۱(, fluorine )۳.۵ mg L -۱(, and ۱-۴ Dioxane )۲۵ mg L -۱(, in a mesocosm treatment floating bed system, the phytoremediation efficiencies were ۹۱.۲۸ ± ۶.۳۵%, ۸۲.۳۳ ± ۲.۵۱ %, ۷۵.۶۷ ± ۳.۰۵%, ۶۲.۲۸ ± ۵.۷۷% and ۴۲.۲۹ ± ۲.۲۷ % respectively. When Amaranthus retroflexus plants were exposed to metformin )۲۰ and ۵۰ mg L-۱( and OCP-LD )۲۰ and ۵۰ mg L-۱(, ۶۳ ± ۵.۲۴ %, ۵۸.۴ ± ۲.۱۱%, ۳۸ ± ۱.۷۳ %, and ۲۹ ± ۰۱ % of the pollutants were removed. In the case of Closia cristata, the most efficiency belonged to metformin with a concentration of ۵۰ mg L-۱ . The results showed that in water containing NaCl in a range of ۱۰۰۰ to ۲۰۰۰ mg L-۱ , Bambusa vulgaris with an efficiency of about ۳۲.۶۲ ± ۴.۶۵ % is a good candidate for phytodesalination. Consequently, C. alternifolius, a fast-growing plant with a good ecological stability in polluted water, can absorb pollutants and remains healthy after the treatment period. It is a good candidate for phytoremediation in vegetated floating beds.

کلیدواژه ها:

Phytoremediation ، Emerging Contaminant ، Water pollution ، Cyperus alternifolius