Investigation of Biogas Generation from the Waste of a Vegetable and Cattle Market of Bangladesh

Anaerobic Digestion of Vegetable Wastes for Biogas Production in Single Chamber and Double Chamber Reactors

“…Patil and Deshmukh [25] reviewed past literature on biogas yield from a mixture of vegetable wastes in the range of 0.36-0.90 m 3 / kg of VS added. In case of batch reactors, Jalil et al [4] reported average biogas generation rate of 0.27 and 0.39 m 3 /kg of VS added for OLR of 0.83 and 1.24 g VS/L/d respectively for 40 days HRT. For the same HRT, they found the stable rate of biogas producton as 0.24 and 0.30 m 3 /kg of VS added for single chamber reactor (OLR=1.18 g VS/L/d) and the double chamber reactor (OLR=0.96 g VS/L/d) respectively.…”

“…The high moisture and Volatile Solids (VS) contents in vegetable wastes make these more suitable for anaerobic digestion than incineration and composting. Anaerobic digestion of solid wastes is becoming popular day by day as a method of solid waste management as it produces biogas which can be used for steam heating, cooking and generation of electricity [1][2][3][4]. The residual slurry can be used as a bio-fertilizer and soil conditioner [5].…”

The conversion of vegetable juice waste to biogas production at lab-scale by using an internal circulation anaerobic reactor

“…The temperature in all the digesters ranged from 26ºC-32ºC, which happens to be in the mesophilic range of 25 ºC to 45 ºC, which is allowed for biogas production [41]. For the batch studied, Jalil et al [42] reported a pH range of 7.6-7.7 for wastes, which indicated favorable conditions for microorganisms and the biogas production rate throughout the experiments. The production of biogas is depended on the optimum biodegradation process.…”

“…After the 46th day of IC reactor operation, the daily biogas production decreased to low values, and the uctuation in the daily gas production was insigni cant when the temperature dropped suddenly from 19.7ºC to 15.3ºC. Because of the temperature was the main reason for the uctuation in the daily biogas production, as a shock to the microorganisms resulted in a signi cant slowdown of their metabolic activity, and the biogas production was generally low [42]. The third phase started from 91 to 120 days by increasing the OLR to 4.4 gCOD/l.d with 1.3 l.d of the daily in uent of VJW charged to maintain the COD concentration of 8712 mg/l and the HRT of 2 days for determination of the performance in the IC reactor by the variation in daily biogas production and its methane contents during experimenting.…”