BIOGAS PRODUCTION FROM THE ANAEROBIC DIGESTION OF LIGNOCELLULOSICS WASTESN. LASKRI, A. MIZI, D. DAAS, N. NEDJAH AND M. BACCOUCHEAbstract The objective of the present work is to study the influence of the pretreatment after conversion of the lingo cellulosic wastes to biogas. Laboratory scale digesters of 1 L capacity were used and fed with the rumen of the camel as the substrate, in a batch reactor for a retention period more than 100 days at mesophilic temperature. During the course of experiment, pH, temperature and biogas production were monitored daily. This substrate was digested at different temperatures: 24°C, 30°C and 37°C in batch anaerobic digester. The results indicated that the generation of biogas was higher at higher temperature. We also studied the influence of the concentration of the substrate on the biogas production. The pH favorable to improve the yield of biogas production is between 6 and 7.5. We also found that the highest biogas yield was observed for 1.0 mm particle diameter size of the rumen.
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