Studies on Kinetics of Anaerobic DigestionI of Solid Waste (Sinews) from Gelatin Industry in Semi-Continuous Reactor

Anaerobic digestion offers a potential means for converting organic solid waste into fuel and thereby provides a supplemental and readily utilizable source of energy. Manufacturing of Gelatin from animal bones generates solid wastes in the form of semisolids, having fat and protein in the range of 52.7 +/- 2.6 and 36 +/- 3.2 percent respectively. The waste seemed to have good potential for generation of biogas. Biogas produced from these wastes by anaerobic digestion process would replace part of furnace oil used as fuel in the boiler to produce process steam. This would not only improve techno-economic viability of the gelatin production from wastes but also reduce the Green House Gas emission. In the present investigation, biomethanation potential of Gelatin industry solid wastes particularly sinews has been assessed using semi-continuous reactors. The studies have been carried out at various Organic Loads and Retention to times, in order to determine the specific gas production with respect to volatile solids fed and to developed continuous kinetics for anaerobic digestion of sinews.