Nowadays an environmental problem is the contamination of the water that is given by the limitless population growth, an intensive agricultural practice and a high industrial activity. A feasible proposal for the treatment of the wastewater that contain nitrogen in nitrate form and organic matter of different kinds is the...
Las aguas residuales son productos de desecho tanto doméstico, como de procesos industriales, las cuales contienen contaminantes que pueden tener un grave efecto sobre el ambiente al cual son descargadas, o sobre la salud de animales y humanos (Amman, 1998). Entre los principales contaminantes de las aguas residuales se encuentran...
Discharges of nitrogen into the wastewaters, which is generally ammonium, has been removed through a two step sequential process: autotrophic nitrification and heterotrophic denitrification. As a first step ammonium is converted to nitrate under aerobic conditions (nitrification). In a second step nitrate is reduced to nitrogen gas (denitrification). At the...
A contribution to the knowledge of denitrifying process in presence of toluene is presented. The effect of an easily degradable substrate such as acetate on toluene mineralization under denitrifying conditions was evaluated by means of consumption efficiencies, yield products and substrate specific consumption rates. Molecular techniques such as denaturing gradient...
Un reactor nitrificante en continuo en estado estacionario sirvió como fuente de inóculo para realizar cultivos nitrificantes en lote y operar dos reactores de lotes secuenciados (SBR) nitrificantes. En ambos sistemas de estudio, se evaluó el efecto del p-cresol sobre el metabolismo de un consorcio nitrificante, así como la capacidad...