In this research, it was aimed to determine the amount of compost obtained from organic kitchen waste in Isparta province and the resulting economic loss when these wastes were not recycled as compost. Composting of organic kitchen wastes collected from the selected households was carried out in a home composter in the Laboratory of Composting and Biogas, Department of Agricultural Machinery and Technology Engineering, Süleyman Demirel University. The results showed that the concentrations of N, P2O5, K2O, MgO, and CaO of the finished compost were determined as 1.73%, 1.00%, 1.91%, 1.00%, and 3.72%, respectively. Results revealed that kitchen organic waste corresponding to 0.66 kg N, 0.38 kg P2O5, 0.73 kg K2O, 0.38 kg MgO, and 1.41 kg CaO kitchen waste per household per year was wasted without utilization.
In the study, the economic value of the wastes when not recycled as compost was determined as 54658$, 29389$, and 111237$ per year corresponding urea, triple superphosphate, and potassium sulphate, respectively based on the commercial fertilizer price. It was determined that compost obtained from organic kitchen wastes was found to be 386164$ per year when economic value was calculated directly as compost rather than as equivalent commercial fertilizer.
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