Phytoremediation of Lead from Contaminated Soil Using Pharagmites Australis

Subject Areas : Environmental pollutions (water, soil and air)

Malihe  Amini ¹ (Assistant Prof, Department of Environmental Science and Engineering, Faculty of Natural Resources, University of Jiroft, Jiroft, Iran. *(Corresponding Authors))
Hamed  Haghparast ² (Ph.D, Environmental Science, Ofogh Consulting Engineers (OCE), Environmental Research Department, Tehran, Iran)

Received: 2017-01-21 Accepted : 2018-05-28 Published : 2020-07-22

Keywords: Phytoremediation, constructed wetland, Pharagmites australis, Soil contamination, Lead,

Abstract :

Background and Objective: Antropogenic heavy metals discharge in to the precious environment has been a key burden of modernity. Excess trace elements have driven the fertile soil and water mediums in to unstable and fragile states in many countries. In recent years bio-remediation approaches via various plants species, has been highlited as prior strategies in soil pollution control. Method: The present study aims to assess phytoremediation of Pharagmites australis (common reed) for lead contamination in constructed wetland. Experimental design was performed in an entirely randomized plan having two factors and three replications. Accordingly lead and levels of metal stress were obtained.    Findings: According to indoor expriments results, any increment in lead concentration enhances root-shoot metal absorbing. However, impressive accumulation of heavy metals was in roots and its translocation and accumulation in shoot was reported in lesser portions. Results of regression analysis showed concentration increment of lead in P.australis organs under these metal stress condition which was fixed as a quadratic function with R2 >90 (p<0.01). Discussion & Conclusion: P.australis showed high relatively resistant to lead stress. High accumulation capacity for metals in roots and low heavy metal translocation factor were observed during the present study.  

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