Methane production food waste

However, there are disadvantages. The yield of biogas production varies due to the composition of food waste and retention time. Highest methane yields are found to be with excess of lipids and longest retention time while there are inhibitoiy effects likely to occur with excess of lipid and proteins due to the volatile fatty acid accumulation and ammonium nitrogen. Besides, there is extra attention and precaution for the leakage of CH4, extra cost of maintenance and air pollution control measures are needed. 

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An alternative to bio-based solvent production by fermentation is the anaerobic digestion of organic (food) wastes.Solvents that are currently made from natural gas could quite easily be synthesised from the methane produced by anaerobic digestion (Scheme 3.2). A co-product of anaerobic digestion is carbon dioxide, which can also be used as a solvent. 

Lindgren SE, Dobrogosz WJ (1990) Antagonistic activities of lactic acid bacteria in food and feed fermentations. EEMS Microbiol Lett 87(1-2) 149-163. doi 10.1016/0378-1097(90)90703-S Liu D, Liu D, Zeng RJ, Angelidaki I (2006) Hydrogen and methane production from household solid waste in the two-stage fermentation process. Water Res 40(11) 2230-2236. doi 10.1016/... 

Tiwari, M., Guha, S., Harendranath, C., Tripathi, S., 2006. Influence of extrinsic factors on granulation in UASB reactor. Applied Microbiology and Biotechnology 71 (2), 145—154. Ufkun Kiran, E., Trzcinski, A.P., Liu, Y., 2015. Enhancing the hydrolysis and methane production potential of mixed food waste by an effective enzymatic pretreatment. Bioresource Technology 183, 47—52. 

Hydrogen and methane production from food waste 20.4.3.1 Hydrogen production... 

Table 20.6 Methane production from food wastes... 

Adhikari, B.K., Barrington, S., Martinez, J., 2006. Predicted growth of world urban food waste and methane production. Waste Management and Research 24 (5), 421—433. 

Kiran, E.U., Trzcinski, A.P., Liu, Y., 2015. Enhancing the hydrolysis and methane production potential of mixed food waste by an effective enzymatic pretreatment. Bioresotirce Technology 183, 47—52. 

Lee, D.H., Behera, S.K., Kim, J.W., Park, H.S., 2009. Methane production potential of leachate generated from Korean food waste recycling facihties a lab-scale study. Waste Management 29 (2), 876-882. 

Liu, X.Y., Li, R.Y., Ji, M., Han, L., 2013. Hydrogen and methane production by co-digestion of waste activated sludge and food waste in the two-stage fermentation process substrate conversion and energy yield. Bioresource Technology 146, 317—323. 

Moon, H.C., Song, I.S., 2011. Enzymatic hydrolysis of food waste and methane production using UASB bioreactor. International Journal of Green Energy 8 (3), 361—371. 

Nathao, C., Sirisukpoka, U., Pisutpaisal, N., 2013. Production of hydrogen and methane by one and two stage fermentation of food waste. International Journal of Hydrogen Energy 38 (35), 15764-15769. 

Oh, G., Zhang, L., Jahng, D., 2008. Osmoprotectants enhance methane production from the anaerobic digestion of food wastes containing a high content of salt. Journal of Chemical Technology and Biotechnology 83 (9), 1204—1210. 

Wang, X., Zhao, Y.-C., 2009. A bench scale study of fermentative hydrogen and methane production from food waste in integrated two-stage process. International Journal of Hydrogen Energy 34 (1), 245—254. 

Today, the United States is using some 9 billion cubic feet of H2 a day in the petrochemical, food, and rocket propulsion industries. Around 98% of the bulk H2 is produced by steam reformation of natural gas (e.g., methane). Methane is reacted with water vapor over a catalyst to form carbon monoxide (CO) and H2. H2 can also be made from ethanol (alcohol), biomass, fossil fuels, or organic waste by the process of "reforming." Most of the currently operating H2 production plants depend on reforming natural gas. This is a process that emits C02 while consuming a nonrenewable fossil... 

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