Evaluation of Cadmium Removal from the Water in Phytoremeiation Process Using Eichhornia crassipes

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ASRARI E.; Avatefi Nezhad G.

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Journal: POLLUTION Year:2017 | Volume:3 | Issue:1 Page(s): 29-38

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Title

Evaluation of Cadmium Removal from the Water in Phytoremeiation Process Using Eichhornia crassipes

Author(s)

ASRARI E. | Avatefi Nezhad G. | Issue Writer Certificate

Keywords

adsorbent

cadmium

phytoremediation

water hyacinth (Eichhornia crassipes)

Abstract

Conserving water resources and protecting them from pollution are of high account in the natural cycle of our life. This study has tried to determine the refining potential and capacity of water hyacinth (Eichhornia crassipes) in order to remove the cadmium from water, studying the influence of factors such as initial concentration of cadmium, contact time, absorbent mass, and pH. Results have shown that the best efficiency of cadmium, more than 99%, was obtained in the optimum conditions (i. e. retention time of 30 hours, adsorbent dose of three plants (12 stems), and pH=6. 6). By increasing the initial concentration of cadmium from 0. 28 to 8. 28 mg/L, the elimination efficiency did not change; moreover, by increasing the absorbent mass, the elimination efficiency increased from 98. 4 to 99. 8 and the lowest retention time was obtained for the balance. All experiments have been repeated three times, showing in the end that water hyacinth is able to absorb cadmium up to 8. 28 mg/L. This process follows Freundlich isotherm (R2=0. 98). Results of this study indicate that this plant can grow well at high levels of cadmium and the growth of water hyacinth is better in the presence of cadmium than control conditions (city water). Finally, it can be concluded that it is necessary to provide a reliable, cheap, and fast method to eliminate pollution. Eichhornia crassipes, a promising plant with great functionality, can be used as a refiner in order to eliminate the heavy metals in wastewater (sewage) effluents, particularly industrial sewage.

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APA: Copy

ASRARI, E., & Avatefi Nezhad, G.. (2017). Evaluation of Cadmium Removal from the Water in Phytoremeiation Process Using Eichhornia crassipes. POLLUTION, 3(1), 29-38. SID. https://sid.ir/paper/348726/en

Vancouver: Copy

ASRARI E., Avatefi Nezhad G.. Evaluation of Cadmium Removal from the Water in Phytoremeiation Process Using Eichhornia crassipes. POLLUTION[Internet]. 2017;3(1):29-38. Available from: https://sid.ir/paper/348726/en

IEEE: Copy

E. ASRARI, and G. Avatefi Nezhad, “Evaluation of Cadmium Removal from the Water in Phytoremeiation Process Using Eichhornia crassipes,” POLLUTION, vol. 3, no. 1, pp. 29–38, 2017, [Online]. Available: https://sid.ir/paper/348726/en

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