Aerobic decomposition

In another study, Blechert reported the aerobic decomposition of complex 29, cleanly yielding compound 30 in which the benzylidene is now bound to the aryl ring of the NHC (Scheme 13.12) [49],... 

Centrifugation Integrated adsorption Resin adsorption Ozonation Chemical oxidation Aerobic decomposition Thermal emulsion breaking... 

In addition to these three treatment options, several alternative technologies are applicable to the treatment of oily wastewater. These include coalescing, flotation, centrifugation, integrated adsorption, resin adsorption, ozonation, chemical oxidation, aerobic decomposition, and thermal emulsion breaking.18-20... 

Walker LP, Nock TD, Gossett JM, VanderGheynst JS (1999) The role of periodic agitation and water addition in managing moisture limitations during high-solids aerobic decomposition. 

The stepwise nature of nitrification during the aerobic decomposition of detrital PON is illustrated in Figure 24.6. Initially, the degradation of PON produces ammonium, which stimulates the growth of the nitrate oxidizers. These bacteria transform the ammonium into nitrite, causing ammonium concentrations to decline and nitrite concentrations to rise. The elevated nitrite levels stimulate the growth of the nitrite oxidizers. These bacteria transform the nitrite into nitrate. Eventually all of the DIN is oxidized to nitrate. The residual pool of PON includes microbial biomass and any PON too inert to be degraded by aerobic marine bacteria. 

In broad terms the decomposition of organic matter under anaerobic conditions is expected to be slower than nnder aerobic conditions becanse the free energy changes for the reactions involved are mnch smaller (Table 4.1 and Fignre 4.3). For example, for the aerobic decomposition of CH2O ,... 

The most striking difference between anaerobic and aerobic decomposition is in the nature of the end products. In aerobic decomposition the main prod-nets are CO2, NOs, 864 and resistant residues in anaerobic decomposition they are CO2, H2, CH4, N2, NH4+, H2S and various partially decomposed and humified residues. 

The highest NH3-losses occur in straw-based housing systems when the manure is moved to storage (Hartung 1991). Aerobic decomposition (e.g. composting) is connected with higher losses (9-44% of Nt) than anaerobic (< 1% of Nt). NH3... 

Was this your answer The capacity for aerobic decomposition is limited by the amount of dissolved oxygen. In a babbling brook, aeration guarantees that any dissolved oxygen lost to aerobic decomposition is quickly replaced. This is not so with a still pond. Cubic meter for cubic meter, a babbling brook has a greater capacity to decompose organic matter aerobically. 

What are some of the main products of aerobic decomposition ... 

Although pseudomonads are well known for aerobic decomposition of aromatic compounds, some strains of Pseudomonas, as well as many other bacteria, are able to degrade aromatic compounds under completely anerobic conditions.166 167 Benzoate can be converted to benzoyl-CoA and the ring can be partially reduced in two ATP- and NADH-dependent reactions (Eq. 25-9). The first of these reduction steps is unusual because ATP is apparently needed to drive the reaction.166,166a,b This is analogous to the need for ATP in nitrogen fixation (Eq. 24-6, step b). 

Hargrave, B.T., 1972. Aerobic decomposition of sediment and detritus as a function of particle surface area and organic content. Limnol. Oceanogr., 17 583-596. 

Predictably, cold temperature will slow the progression of a cadaver through the sigmoidal decomposition curve. In theory, decomposition should still proceed at 0 °C because of the concentration of salts in a cadaver. However, Micozzi (1997) observed a lack of putrefaction at temperatures below 4 °C. This phenomenon is believed to be the result of the simultaneous suppression of decomposer activity and promotion of desiccation (Janaway 1996). Interestingly, the freezing and thawing of a cadaver tends to promote aerobic decomposition rather than the anaerobic breakdown typically associated with putrefaction (Micozzi 1986). The reason for this is unknown. 

Qualls, R.G., and Haines, B.L. (1990) the influence of humic substances on the aerobic decomposition of submerged leaf litter. Hydrobiology 206, 133-138. 

There are two major pathways responsible for decomposing organics (plant residue, manures, synthetic organics, sewage sludges, etc.) in the soil-water environment. One pathway involves aerobic processes, and a second involves anaerobic processes. During aerobic decomposition, carbohydrates are converted to carbon dioxide and water as follows ... 

Adsorption isotherms, 178-190 Freundlich, 179 Langmuir, 183 S-type, 178-179 L-type, 178-179 C-type, 178-179 H-type, 178-179 Aerobic decomposition, 323 Alkalinity, 82—91 Definition, 88 Types of alkalinity, 82 Aluminosilicate clays, 102 Aluminum cation, 103, 160 Acidity, 160 Complexation, 160 Polymeric aluminum, 160 Exchangeable, 160,162 Hydrolysis, 69, 75 Solubility, 71 Soluble complexes, 69 Aluminum hydroxide, 78-80 Solubility, 78 pH effect, 79... 

Tezuka, Y. (1989). The C N P ratio of phytoplankton determines the relative amounts of dissolved inorganic nitrogen and phosphorus released during aerobic decomposition. Hydrobiologia 173, 55-62. 

Example 4.7. Decrease in pH from Aerobic Respiration What is the pH change resulting from the aerobic decomposition of organic matter—6 c r-... 

Oxygen enters water via diffusion from the atmosphere and it is generated by photosynthetic activity of aqueous plants. It is consumed during aerobic decomposition of organic substances, oxidation of some inorganic compounds and respiration of the organisms present. 

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