Effectiveness Of Anaerobic Digestion On Reducing Municipal Waste

Rahmat, Budy and Priyadi, Rudi and Kuswarini, Purwati (2014) Effectiveness Of Anaerobic Digestion On Reducing Municipal Waste. INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH, 3 (3).

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Abstract

The study was aimed to determine the effectiveness of anaerobic digestion on the reduction on municipal waste. The study was carried out using the batch type biogas digester. This study employed the experimental method with the complete randomized design, involving three instruments of digesters A, B and C. The digester A was filled with 300 g of food waste, the digester B was loaded with 200 g of food waste + 100 g of cow dung and the digester C was charged with 300 g of cow dung as the control. Before placing into each digester, each treatment was mixed with water with the ratio of 1:1 to give the slurry. The results showed that food waste was the main component of municipal waste (50.19%). The rests were plastic (32.71), paper/wood (16.37) and metal (0.71%). The highest daily biogas production was achieved at the first five days as the food waste contained organic compounds which could be converted into the biogas. The highest total biogas production during the retention time of 20 day from 8 L of substrate was achieved by the digester B (56.068 cm3), followed with the digester C(51.431 cm3) and A (32.433 cm3). The digester A might reduce the total solid (TS) from 119.100 into 22.500 mg/L during less than 20 d. The digester B might reduce the TS from 135.200 into 18.400 mg/L and the digester C might reduce the TS from 125.000 into 22.400 mg/L.

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