| چکیده انگلیسی مقاله |
Background: Phytoremediation is one of the methods used to remove contaminants and while being simple, cheap and efficient, does not cause environmental deterioration. The aims of this study were phytoremediation of soil contaminated by Cd, the simultaneous survey of the influence of different electrical conductivity values, and comparison of two soil amendments including sludge and municipal compost in increasing of Cd uptake by sunflower. Methods: Experiments of this study were conducted randomly with three replications in the split plot design consisting of 24 pots from June to August 2010. To determine the effect of salinity on metal uptake efficiency of the sunflower plant, irrigation water was used with different levels of electrical conductivity, in the range of 0, 2, 4 and 6 dS/m. The combined effects of organic amendments including sewage sludge and municipal compost in improving the efficiency of metal uptake was also examined. Findings: The most Cd was absorbed in the 6 dS/m EC and in the sludge bed. The EC contents of the root, stem, and leaves were 5.8 ±__AWT_NOKT_COMMA__ 0.7, 11.8 ±__AWT_NOKT_COMMA__ 3.6 and 8.4 ±__AWT_NOKT_COMMA__ 0.0 mg/kg, respectively. It caused dry weight reduction of leaves and the most loss was observed in the treated soil with compost. Conclusion: ANOVA showed that with increasing the EC of irrigation water, the amount of Cd absorbed by the roots, stems and leaves will increase. Cd uptake in the sludge amendment was also greater than soil treated by compost. Thus, EC and sewage sludge applications increase the uptake of cadmium. |
| نویسندگان مقاله |
مریم سلیمی | مريم سليمي
MSc Student, Student Research Committee, Department of Environmental Health Engineering, School of Public Health, and Student Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
محمد مهدی امین | محمد مهدي امين
Associate Professor, Environment Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
افشین ابراهیمی | افشين ابراهيمي
Assistant Professor, Environment Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
اکبر قاضی‌فرد | اکبر قاضي‌فرد
Associate Professor, Department of Geology, School of Earth Sciences, Isfahan University, Isfahan, Iran
پیام نجفی | پيام نجفي
Assistant Professor, Department of Water Engineering, School of Agricultural, Khorasgan Branch, Islamic Azad University, Isfahan, Iran
حسین امینی | حسين اميني
MSc, Department of Soil Science, School of Agriculture, Khorasgan Branch, Islamic Azad University, Isfahan, Iran
پروین رزمجو | پروين رزمجو
BSc, Department of Environmental Health Engineering, School of Public Health, Isfahan University of Medical Sciences, Isfahan, Iran
مرضیه وحید دستجردی | مرضيه وحيد دستجردي
MSc, Department of Environmental Health Engineering, Environment Research Center, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
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