A situation where living organisms oxidize some of their own cellular mass instead of new organic matter they ad sorb or ab sorb from their environment
Top of Page. Once the time-to-endogenous respiration has been determined, the OUR data can be used to estimate the total oxygen consumption in the biological reactor. This is of particular concern for aeration tanks that do not consistently achieve endogenous respiration by the time the wastewater is leaving the tank. When the OUR value is 9 (mg O 2 /L)/hr the oxygen requirement in the aeration tank is 9,143 lb O 2 /day, 6,857 below what the aerators are capable of producing. That is, as we approach the endogenous respiration rate we begin to have excess oxygen which increases the DO concentration in the reactor. In the endogenous respiration concept the biodegradable fraction of X OHO is regarded as a homogenous substrate that undergoes self-destruction in the absence of external substrate. The degradation process of X OHO is modelled with Eq. (4) and Eq. Experimental evidence for the validity of the endogenous respiration model comes from Marais and Ekama (1976) . Using the OUR method, the value of b OHO was found to be 0.24 d −1 and independent from SRT in the range of 2.5–30 days. Similar results were obtained by van Haandel et al. The metabolic explanation of these processes is expressed in concepts like endogenous respiration (Gujer et al., 1999), death-regeneration (Dold et al., 1980), maintenance (Loosdrecht van and Henze, 1999) or predation (Moussa et al., 2005). Experimental evidence for the validity of the endogenous respiration model comes from Marais and Ekama (1976) . Using the OUR method, the value of b OHO was found to be 0.24 d −1 and independent from SRT in the range of 2.5–30 days. Similar results were obtained by van Haandel et al. The endogenous respiration is limited by the internal carbon source that is (1 − f U)* X OHO. The endogenous respiration rate OUR OHO (t) during the aerobic degradation experiment is modelled with Eq. (7) and Eq. Experimental evidence for the validity of the endogenous respiration model comes from Marais and Ekama (1976) . Using the OUR method, the value of b OHO was found to be 0.24 d −1 and independent from SRT in the range of 2.5–30 days. Similar results were obtained by van Haandel et al. Optimal breathing on the other hand which includes a balance of appropriate endogenous respiration as well as natural breathing reflex development will both enhance and extend calm and recovery. Strictly speaking, our red blood cells are the major transport vehicle of O2 into your body. Endogenous breathing (EB) helps to increase blood pressure in the lungs and concentrate the O2 in your red blood cells. Buteyko, one style of Endogenous Breathing training, is an approach to handle asthma. Endogenous Respiration. Endogenous respiration, also referred to as endogenous metabolism, is defined here as “a situation where living organisms oxidize some of their own cellular mass instead of new organic matter they ad sorb or ab sorb from their environment” (California State University, Sacramento, Volume II). When the OUR value is 9 (mg O 2 /L)/hr the oxygen requirement in the aeration tank is 9,143 lb O 2 /day, 6,857 below what the aerators are capable of producing. That is, as we approach the endogenous respiration rate we begin to have excess oxygen which increases the DO concentration in the reactor. Sewage sludge treatment describes the processes used to manage and dispose of sewage sludge produced during sewage treatment. Sludge is mostly water with lesser amounts of solid material removed from liquid sewage. Primary sludge includes settleable solids removed during primary treatment in primary clarifiers. Secondary sludge separated in secondary clarifiers includes treated sewage sludge from secondary treatment bioreactors. Endogenous respiration of Bacillus cereus. J. Bacteriol. 82: 252–256. 1961.—The endogenous respiration of washed cells of Bacillus cereus varies with the nature of the growth medium and with time. The respiratory quotient of cells harvested from nutrient agar remained quite constant around 1.00 over a 2-hr period of respiration, whereas that of cells grown on glucose-nutrient agar decreased from 0.97 for the first hour to 0.87 for the second hour.
http://waterfacts.net/OUR/Level_2_OUR/level_2_our.html http://www.sciencedirect.com/science/article/pii/S0043135413005344 http://www.sciencedirect.com/science/article/pii/S0043135413005344 http://www.sciencedirect.com/science/article/pii/S0043135413005344 http://www.breathing.com/articles/endogenous-respiration.htm http://waterfacts.net/OUR/Level_2_OUR/level_2_our.html https://en.wikipedia.org/wiki/Sewage_sludge_treatment http://www.ncbi.nlm.nih.gov/pmc/articles/PMC279151/
what is endogenous respiration