In addition to your basal metabolic rate, two other factors determine how many calories your body burns each day: Food processing (thermogenesis). Digesting, absorbing, transporting and storing the food you consume also takes calories. This accounts for 100 to 800 of the calories used each day.
(August 2015). Denitrification is a microbially facilitated process of nitrate reduction (performed by a large group of heterotrophic facultative anaerobic bacteria) that may ultimately produce molecular nitrogen (N 2) through a series of intermediate gaseous nitrogen oxide products.enitrification takes place under special conditions in both terrestrial and marine ecosystems. In general, it occurs where oxygen, a more energetically favourable electron acceptor, is depleted, and bacteria respire nitrate as a substitute terminal electron acceptor.
By Tony Griffitts. A denitrator is a biological filter that removes nitrate (NO 3) from the aquarium. A denitrator filter uses anaerobic bacteria to brake down nitrate into nitrogen gas (N 2), which escapes into the atmosphere, the result is nitrate free effluent.hen you first set up the filter run the aquarium water through it at a swift rate for about 2 week. This will give bacteria time to colonize the filter. After 2 weeks cut down the filter flow rate to about a drop or two a second. At this time, start to add about 5ml of bacteria food a day to the filter.