Abstract
Abstract The aim of this study was to determine biogas amount and the energy value produced from animal manure in Samsun province, Turkey. For this purpose, biogas potential was calculated considering the number of cattle, buffalo and laying hens in the province. Samsun has a total of about 300 thousand cattle, 18 thousand buffalo, and 1.4 million laying hens. From these animals in the province, 2.95 million t of cattle manure, 178 thousand t of buffalo manure, and 40 thousand t of laying hens manure, including the total of 3.2 Mt of manure per year is obtained. Annually, 53.6 Mm3 of biogas can be produced from the usable amount of this manure. The heating value of biogas produced from this manure is about 1.22 PJ. The electricity production from this biogas is about 135 GWhel. These values can provide 4.96% of Samsun’s annual electrical energy consumption (2720 GWhel). The distribution of these calculated amounts by districts was mapped. When districts are listed according to the biogas production amount, the top seven Samsun districts are Bafra (16.2%), Center (16.0%), Carsamba (12.1%), Vezirkopru (11.0%), Terme (7.6%), Alacam (7.4%) and Havza (7.0%).
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