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The effect of pH adjustment together with differentsubstrate to inoculum ratios on biogas productionfrom sugar beet wastes in an anaerobic digester

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(6 صفحه - از 6 تا 11)

The effect of pH adjustment together with substrate to inoculum ratio on biogas production from sugar beet wastes, which are chopped parts of the sugar beet that do not go through the sugar extraction process, was investigated in a lab-scale batch reactor. The pH was set on 7, 8, and 9 for the first 4 days and 0.5:1, 1.5:1, and 2.5:1 substrate to inoculum ratios were used at the same time. There was one sample without pH adjustment for each substrate to inoculum ratio. The results showed that sugar beet wastes have good potential for biogas production. Whilst there was no biogas production in 2.5:1 substrate to inoculum ratio, pH adjustment made it possible to generate biogas. pH adjustment on 7 lead to approximately 1.87 and 10.48 times higher specific biogas production in 0.5:1 and 1.5:1 substrate to inoculum ratios, respectively. Methane content from anaerobic digestion of sugar beet wastes slightly increased with substrate to inoculum ratio increasing. The highest specific biogas production was recorded at a 0.5:1 substrate to inoculum ratio and pH adjustment on 7. © 2017 Journal of Energy Management and Technology

خلاصه ماشینی:

"The effect of pH adjustment together with different substrate to inoculum ratios on biogas production from sugar beet wastes in an anaerobic digester MISAGH KERAMATI1 AND HOSSEIN BEIKI2 1,2Department of Chemical Engineering, Quchan University of Technology, 94771-67335, Quchan, Iran *Corresponding author: hbeiki@qiet. JEMT1705-1016 The effect of pH adjustment together with substrate to inoculum ratio on biogas production from sugar beet wastes, which are chopped parts of the sugar beet that do not go through the sugar extraction process, was investigated in a lab-scale batch reactor. Methane content from anaerobic digestion of sugar beet wastes slightly increased with substrate to inoculum ratio increasing. © 2017 Journal of Energy Management and Technology biogas; anaerobic digestion; sugar beet wastes; pH adjustment. [20] studied anaerobic co-digestion of sugar beet pulp lixiviation (SBPL) and sewage sludge (SS) in batch reactors with different temperature regimes and SS to SBPL ratios. The present study tried to fill a gap in the literature by investigating the effect of initial pH adjustment effect alongside with different substrate to inoculum (S/I) ratios on biogas production from SBW in lab-scale anaerobic digesters. Ya- mamoto, "An on-site prototype two-stage anaerobic di- gester for co-digestion of food waste and sewage sludge for biogas production from high-rise building," International Biodeterioration & Biodegradation, vol. Ruan, "Enhancing biogas generation performance from food wastes by high-solids thermophilic anaerobic diges- tion: Effect of ph adjustment," International Biodeterioration & Biodegradation, vol. Pérez, "Anaerobic co- digestion of sewage sludge and sugar beet pulp lixiviation in batch reactors: effect of temperature," Bioresource technol- ogy, vol."


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