4. Conclusions
Pineapple solid wastes were treated anaerobically
to produce biogas. Methane gas, a main composition in biogas, was produced in both batch process and fed batch process, under significant difference performance. The efficiency of bioconversion to become methane in fed batch process was lower than that in batch process. The controlled pH value at 7.0 and adjustment carbon to nitrogen ratio to 20:1 was the suitable condition for biogas generation from this waste. The biogas containing
48% of methane was achieved in batch process. In fed batch process which applied with 1 kg organic/ m3/ day of organic loading rate was the promising condition. The optimization of fed batch process is needed to be further studied. The biodegradation of pineapple peel solid waste to methane gas was expressed the potential for waste treatment through anaerobic digestion. Biogas production from this industrial fruit wasted was not only performed the environmental quality, but also provided the solutions for alternative green energy.