Abstract
This research investigated biogas production from Co-Digestion of beverage industry waste. The optimum ratio of four beverage wastes were analysed. The anaerobic fermentations were done in 300 mL volumetric flask by batch shaking at normal ambient temperature with controlled of dry substrate at 3 g. The biogas production was collected and measured by water replacement and its composition was evaluated by gas chromatography. The results revealed that the highest amount of biogas was occurred at 750 mL at milk : coffee : beer : energy drink 2:1:1:1 and the ratio 1:1:1:1, 1:2:1:1, 1:1:1:2 and 1:1:2:1 could produce biogas at 709, 577, 467 and 302 mL, respectively and at ratio 2:1:1:1 occurred COD removal from degradation efficiency of organic substances at 69.30 % which was the highest value. Whereas, the ratio 1:1:1:1, 1:2:1:1, 1:1:1:2 and 1:1:2:1 occurred at 46.80, 35.20 and 17.20%, respectively. The result of biogas production was consistency with the result of COD removal in every ratio. It could be summarized that the best ratio of 4 beverage waste was 2:1:1:1 which shown the best in amount of biogas production and degradation efficiency. It could use this ratio to apply in industrial waste application and the production of renewable energy which could help environment.
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