Economics oxygenates

In the case of pharmaceutical wastewater, it shows when its oxygen concentration was 60%, the amount of total dissolved oxygen is the most. According to the condition and concentration of wastewater and the recovery of 02-PSA used in other wastewater treatment plants, the optimal, and most economical oxygen concentration and operating conditions will be decided. This study shows that oxygen with 90% concentration or higher doesn t have the best treatment efficiency and economical value. 

This is the most important reaction of iron from an economic point of view essentially, rusting is the formation of hydrated iron(III) oxide in the presence of oxygen and water. The process is essentialh... 

Provided this equaHty is satisfied and the dissolved oxygen concentration in the weU-mixed Hquid is greater than the critical concentration throughout the bioreactor, then the maximum oxygen demand of the species should be met satisfactorily. Design of the bioreactor must ensure that the above requirements are achieved economically and without damaging the biological species. 

Natural Gas Upgrading via Fischer-Tropsch. In the United States, as in other countries, scarcities from World War II revived interest in the synthesis of fuel substances. A study of the economics of Fischer synthesis led to the conclusion that the large-scale production of gasoline from natural gas offered hope for commercial utiHty. In the Hydrocol process (Hydrocarbon Research, Inc.) natural gas was treated with high purity oxygen to produce the synthesis gas which was converted in fluidized beds of kon catalysts (42). 

Economic competitiveness plays a reduced role in commercialisation only when environmental legislation mandates the use of certain fuels such as oxygenates. 

The quantity of breathing gas consumed in deep dives is of both economical and logistical concern at depths of 300 m, a reasonably active diver requites ca 1.8 m (64 fT at STP) of breathing gas per minute. In closed-cycle breathing systems, of both the self-contained and umbiHcal types, the helium is recitculated after carbon dioxide is removed and the oxygen replenished (147). 

Process Chemistry. Manganese is combined with oxygen in its ores (see Table 3) and carbon is the most economical reducing agent for oxides. Therefore, the essential characteristics of manganese metallurgy is evident from examination of the interactions between manganese oxides and... 

Eor vapor-phase processes, the product stream from the nitrator must be separated. The nitroparaffins, excess propane, and NO plus NO2 (which are converted back to HNO ), are recovered. The oxygenated products are removed, but there are generally insufficient amounts for economic recovery. 

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