Effects of Process Variables on Biomethane Productivity in Anaerobic Digestion of Market waste co-fermented with Food Waste

Effects of Process Variables on Biomethane Productivity in Anaerobic Digestion of Market waste co-fermented with Food Waste

© 2021 by IJETT Journal
Volume-69 Issue-5
Year of Publication : 2021
Authors : Narayana Swamy G, Nageswara Rao T, Venkatesh. G. S, Syed Sameer
DOI :  10.14445/22315381/IJETT-V69I5P216

How to Cite?

Narayana Swamy G, Nageswara Rao T, Venkatesh. G. S, Syed Sameer, "Effects of Process Variables on Biomethane Productivity in Anaerobic Digestion of Market waste co-fermented with Food Waste," International Journal of Engineering Trends and Technology, vol. 69, no. 5, pp. 109-118, 2021. Crossref, https://doi.org/10.14445/22315381/IJETT-V69I5P216

The Factors which have a high impact on the production of biomethane from dry, continuous anaerobic digestion of the organic fractions of the market waste containing fruit and vegetable mixture (FVM) co-digested with food waste (FW) are examined. The effects of functional variables such as organic loading rate, hydraulic retention time, C/N ratio, temperature, alkalinity and pH, volatile solid reduction on biomethane productivity were studied in an anaerobic digester with a single stage of plug flow type. In the AD of organic fractions market wastes, substrate-induced volatilities of fruit and vegetable waste (FVW) lead to poor production of biogas. Hence FVW mixture ratio is fixed at 2.2:2.8 for optimum yield and then it is co-fermented with food waste and previous digestate with a 2:1:1 inoculum ratio and results have been investigated. And the AD is operated for a fixed Hydraulic Retention Time (HRT) of 25 days and the optimal organic loading rate ranged between 2.5 to 12 kg VS/m3.d with the moisture content of 76.4 to 82.25 %, Total solid (TS) concentrations of 17.75 to 23.6 %. It is noted, from the results, that the best performance of AD, achieved at OLR 7.5 kg VS/m3.day with 67 % reduction in Volatile Solid and 0.576 m3 of biogas produced per kg VSremoved in loading L3.

Anaerobic Digestion, Market waste, organic loading rate, Total solid pH, Volatile Solid reduction, thermophilic conditions.

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