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:: Volume 17, Number 4 (Scientific Journal of Kurdistan University of Medical Sciences 2012) ::
SJKU 2012, 17(4): 93-102 Back to browse issues page
Optimum operating conditions in the phytoremediation of contaminated soils with Lead and Cadmium by native plants of Iran
Dr Abdoliman Amouei 1, Dr Amir Hosein Mahvi2, Dr Kazem Naddafi2, Dr Hamid Fahimi3, Dr Alireza Mesdaghinia4, Dr Simin Naseri4
1- Associate Professor Babol University of Medical Sciences , Imnamou@yahoo.com
2- Associate Professor Tehran University of Medical Sciences
3- Professor Tehran University
4- Professor Tehran University of Medical Sciences
Abstract:  
ABSTRCT Background and Aim: In recent decade, phytoremediation technology is regarded very important because of its simplicity, inexpensiveness and use of natural resources and solar energy. In this study, we investigated the efficiency of remediation of contaminated soil with Lead and Cadmium by using native plants of Iran. We selected three native plants of Iran (Abutilon theophrasti, Amaranthus retoflexus and Zea maize) for this study. Extraction of soil and plant samples was performed by use of HNO3 ,HCl and HNO3, HClO4 and H2SO4 respectively. Concentrations of Lead and Cadmium in soil and plants were determined by Perkin-Elmer 603 atomic absorption spectrophotometer. Results: Lead concentration in the roots of plants (Alkaline soil) was more than those in their shoots. In acidic soil (with exception of Zea maize), concentration of Lead in the shoots was more than its concentration in the roots of the plants. Concentrations of lead in the roots and shoots of Abutilon theophrasti, Amaranths and Zea maize in alkaline soil were (54.5 and 25.5 mg/kg), (69 and 37.6mg/kg) and (47 and 32mg/kg) respectively, and its respective concentrations in acidic soil were (71.4 and 92.5 mg/kg), (89 and 120.5mg/kg) and (85 and 66.7 mg/kg). Cadmium concentrations in alkaline soil were (6.5 and 4mg/kg), (8 and 6.2 mg/kg) and (5.6 and 3.4 mg/kg) and in acidic soil were (5.8 and 4.5 mg/kg), (7.6 and 5.4mg/ kg) and (6 and 4.8 mg/kg) respectively. Plants in group 3 produced less biomass than those in control group, group 1 and group 2. Conclusion: Considering the increased rate of absorption of Lead and Cadmium and the amount of biomass produced by Zea maize and Amaranthus retoflexus in the acidic and alkaline soil, use of these native plants is recommended for refining the soil contaminated with heavy metals. Key words: Phytoremediation, Zea maize, Amaranth, Abutilon, Soil, Lead, Cadmium Received: Apr 3, 2012 Accepted: Jul 8, 2012
Keywords: Phytoremediation, Zea maize, Amaranth, Abutilon, Soil, Lead, Cadmium
Full-Text [PDF 227 kb]      
Type of Study: Research | Subject: General
Received: 2012/12/11
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Volume 17, Number 4 (Scientific Journal of Kurdistan University of Medical Sciences 2012) Back to browse issues page
مجله علمی دانشگاه علوم پزشکی کردستان Scientific Journal of Kurdistan University of Medical Sciences
مجله علمی دانشگاه علوم پزشکی کردستان Scientific Journal of Kurdistan University of Medical Sciences
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