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您的检索式：作者名="Rowena TRomano"
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| 1 | Anaerobic digestion of food wastes for biogas production显示文摘Five types of food wastes were investigated as feedstock for a potential centralized anaerobic digester system in the area of Sacramento,California to produce biogas energy.The wastes were from a soup processing plant,a cafeteria,a commercial kitchen,a fish farm,and grease trap collection service.Digestibilities of the food wastes,individually and in mixtures,were conducted at mesophilic(35℃)and thermophilic(50℃)temperatures and at two food to microorganism ratios(F/M)of 0.5 and 1.0,for 28 days.A continuously fed mesophilic single-stage anaerobic digester was evaluated using a mixture of the five food wastes at organic loading rates of 0.5 to 1.0 g VS/L/d.In the batch digestion tests,fish and grease trap wastes required longer time to complete the digestion and had higher biogas yields than the other wastes.The continuously-fed digester required the addition of sodium hydroxide to maintain pH at proper levels in the digester.Alkalinity of about 2,500 mg CaCO3/L and pH above 7 was maintained by adding 0.2 g NaOH/g VS.The results of this study indicated that it was necessary to use the chemicals,such as NaOH,to control the pH of the single-stage anaerobic digester treating the food waste.For commercial applications,the cost of chemicals and proper management of additional salts in the digester effluent need to be carefully considered. | Xiguang Chen Rowena TRomano Ruihong Zhang | 2010 | International Journal of Agricultural and Biological Engineering2010，3，4： | 3 |
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