Muhandisī-i Bihdāsht-i Muḥīṭ (Mar 2018)
Investigation of Cd Risk Assessment from Tomato Consumption in A Soil Treated with Sugarcane Bagasse Biochar and Municipal Waste Vermi-Compost
Abstract
Background and objective: Regards to the importance of using safe vegetables, controlling the concentrations of heavy metals is necessary for consumer's health. Therefore, this study was aimed to evaluate the effect of sugarcane bagasse biochar and municipal waste vermi-compost on the changes in cadmium risk assessment from tomato consumption. Methods: Treatments were consisting of applying municipal waste vermi- compost (0, 5and 10 t ha-1) enriched with 0 and 5% (W/W) sugarcane bagasse biochar in a polluted soil (0, 10, 20 and 30 mg Cd kg-1 soil) and plant in this experiment was Tomato. Cd fruit concentration was measured by AAS. Risk assessment to non-cancer diseases was estimated using USEPA formula. Results: Applying 10 t ha-1 municipal waste vermi-compost in a 30 mg Cd polluted soil caused a significant decreasing in Cd fruit tomato by 25%, While, daily Cd absorption from tomato consumption and Cd dangerous Potential to noncancerous diseases was also decreased by 27 and 22 %, respectively Conclusions: The results of this study showed that applying Lenjan municipal waste vermi-compost and sugarcane bagasse biochar caused decreasing Cd availability in soil and Cd absorption from tomato consumption that is a positive point in reduction Cd dangerous Potential to noncancerous diseases.
