Theoretical and Experimental Results on the Recovery of Potato Processing Residuals by Anaerobic Digestion

Abstract

Anaerobic digestion of organic matter with high moisture content has proven to be a suitable method for disposal of wet organic residuals with several advantages compared to other treatment technologies. This paper aimed at evaluating the theoretical and experimental biomethane potential of food processing residuals that are responsible for negative environmental impact, with exemplification for the potato processing waste. The biomethane potential is a useful parameter to assess the economic efficiency of anaerobic digestion processes as it can considerably influence the efficiency and the economic feasibility of the energy recovery technologies. Both experimental and theoretical biomethane potentials of potato waste in mesophilic anaerobic digestion as well as biodegradability of the substrate were estimated. Moreover, effects of microalgal extract addition on the digestion of potato waste were examined in an attempt to stimulate the anaerobic digestion. Cone model and a modified Gompertz model were used to predict the dynamics of biomethane production.

Anaerobic Co-digestion of Slaughter Residues with Agricultural Waste of Amaranth Quinoa and Wheat

“…Furthermore, in experimental trials there is a wide variety of substances that can inhibit anaerobic processes (Chen et al, 2008). In short, the conversion of organic substances into methane, in the experimental tests, is lower than in the theoretical estimates since the ideal conditions cannot be met (Dima et al, 2019). The tests of this research showed that the data for obtaining biodegradability are adequate, since the results of biodegradability and experimental performance showed a concordance of more than 95% in their coefficient of determination (R 2 ) (Figure 4).…”

Valorization of Food Processing Waste to Produce Valuable Polyphenolics

“…It contains phenolic compounds and pesticide residues, used as organic fertilizer after special processing. When the water content of FPW is high, the anaerobic fermentation method is suitable . The organic content in those wastes is first hydrolyzed by the presence of anaerobic microorganisms and produces various short-chain organic acids and other organic products.…”

“…When the water content of FPW is high, the anaerobic fermentation method is suitable. 59 The organic content in those wastes is first hydrolyzed by the presence of anaerobic microorganisms and produces various short-chain organic acids and other organic products. These metabolites are then converted into methane and CO 2 under the action of methanogens.…”