Effect of Organic Amendments on Biodegradation of Diesel Oil in Pb and Cd Polluted Soil Enriched with Vermicompost Under Ornamental Sunflower Cultivation

سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 287

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شناسه ملی سند علمی:

JR_JHEHP-8-3_004

تاریخ نمایه سازی: 18 بهمن 1401

چکیده مقاله:

Background: Remediation of heavy metals contaminated soils is a crucial issue. This study was conducted to evaluate the effect of nano Fe-oxide and multiwall carbon nanotubes (MWCNs) on diesel oil bio-degradation in the soil polluted with Pb and Cd  and enriched with vermicompost under ornamental sunflower cultivation. Methods: Treatments were soil application of MWCNs at the rates of ۰, ۱, and ۲ % (W/W); ۰, ۱۵, and ۳۰ t/ha vermicompost; ۰ and ۰.۵ % (W/W) nano Fe-oxide in soils polluted with Pb and Cd as well as ۰, ۴, and ۸ % (W/W) diesel oil. After harvesting, the Pb and Cd concentrations of plant and soil were determined using AAS. Furthermore, the diesel oil bio-degradation in the soil was measured. Results: Using ۱ and ۲ % (W/W) MWCNs significantly increased the diesel oil bio-degradation by ۱۵.۳ and ۱۷.۴%, while the Pb concentration in soil decreased by ۱۳.۱ and ۱۵.۸%. In addition, the Cd concentration, decreased by ۱۴.۲ and ۱۶.۱%, respectively. The Pb and Cd concentrations in plant showed the similar trends. Using vermicompost significantly increased the diesel oil bio-degradation. Conclusion: Using nano-Fe oxide and MWCNs significantly increased the biodegradation of diesel oil in soils polluted with Pb and Cd.

کلیدواژه ها:

MWCNs ، Nano-Fe oxide ، Diesel oil ، Pb ، Cd ، نانولوله کربن چند جداره ، نانو اکسید آهن ، گازوئیل ، سرب ، کادمیوم

نویسندگان

امیر حسین بقائی

Department of Soil Science, Arak Branch, Islamic Azad University, Arak, Iran - Department of Development and Agricultural Economics, Food Security Research Institute, Arak Branch, Islamic Azad University, Arak, Iran.

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