Windy J. Guerrero-Rodríguez,Patricia Castilla-Hernández, Karen N. Cárdenas-Medina, Carlos A. Gómez-Aldapa y Javier Castro-Rosas. 2012. Degradación anaerobia de dos tipos de lactosuero en reactores UASB. Tecnología Química. 32(1):99-106.
The aim of this study was evaluated the anaerobic degradation of acid whey and the whey obtainedfrom the elaboration of cottage cheese, for the methane production with UASB reactors operatedto 1 day of HRT. Two reactors of 2,5 L were inoculated with sludge from a wastewater treatment plantof a cheeses factory. The reactors were operated during 84 days (whey of cottage cheese) and 95days (acid whey), to a concentration of 1.0 and 2,5 g COD/L. The reactors fed with whey of cottagecheese and acid whey to 1 g COD/L had an average removal efficiency of 76,0 and 77,3 % andmaximum of 90,7 and 100 %, with an average methane production of 0,30 and 0,43 L/day,respectively. To 2,5 g COD/L the average removal efficiencies were of 33,7 and 56,0 %, with amaximum of 44 y 69 %, respectively, and it not showed an increase of methane production. In a thirdstage, the reactors were operated to the initial conditions and presented removal efficiencies lower(59,0 and 62,0 %) than the reached in the first conditions. It was found that the inoculum and thetemperature had influence marked in the degradation process.