Co-digestion of food waste with cow dung by anaerobic digestion for biogas production.

Abstract

Food waste is categorized under household waste which were produce in large amount every day and it can be a good potential to generate biogas production via anaerobic digestion. In this research, the characteristics of co-digestion process are measured to determine the biogas production between food waste and cow dung. The food waste is co-digest with two different type of cow dung are collected depends on their food consuming (grass:bran); 100% grass and 95% grass : 5% bran. The digester is maintained at 35°C of temperature for mesophilic condition. pH values and C/N ratio are noted until 35 days. The biogas production is analysed by using biogas analyzer. The highest biogas production in this study is 67.2% which are co-digest between food waste and cow dung (100%) compared cow dung (95%) is 53.9% on day 26. This shows that the cow dung (100%) produces more biogas than cow dung (95%). Anaerobic digestion process will best suits for biogas production and for the best utilization of food waste.

Co-Digestion-Based Circular Bio-Economy to Improve Biomethane Generation and Production of Nutrient-Enriched Digestate in Bangladesh

“…TAN, which has an adverse effect on AD process, was also reduced when substrates mixed with inoculum. The addition of inoculum brought the C/N ratio of substrates in between 31.83 and 39.84, which is slightly higher than the optimum range (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30). This might not cause any major impact as optimum range of C/N ratio may vary depending on the substrates from 9 to 50, as reported by Guarino et al [57].…”

“…Nowadays, researchers are focusing on ACoD due to its superiority [23][24][25]. Several studies showed that anaerobic co-digestion of cow dung with fruit waste [26], waste leaf [27], elephant grass [28], food waste [29], lignocellulosic crop residue [30], and aquatic waste [31], respectively, enhanced biogas and methane yield. Lignocellulosic crop residues contain a higher percentage of carbon; on the other hand, cow dung contains a higher percentage of nitrogen, so anaerobic co-digestion of these two wastes may be best suited for nutrient balancing and enhancing biogas yield from cow dung.…”

Anaerobic co-digestion of pressmud with vegetable waste in batch reactor for enhanced biogas production

“…In tandem, vegetable waste generated from agricultural, culinary, and processing activities contributes to the growing organic waste burden [19]- [22]. The global adoption of anaerobic co-digestion as a means to co-process these substrates signify a paradigm shift towards circular economy principles, wherein organic waste is transformed into a valuable resource [23], [24]. This research paper aims to know the best ratio of pressmud and vegetable waste in anaerobic co-digestion and its impact on biogas production efficiency and waste management practices.…”