What material are the human nails composed of? How is ammonia metabolized by living organisms? What is the relevance of biological nitrogen fixation with reference to global agriculture? Explain. Where is nitrogen most rapidly cycled? Why does it make sense to remove nitrogen from sewage with deni...
atmosphere and earth's crust is composed of nitrogen. Because rain droplets pass through the atmosphere on their way to the ground, rainwater also contains nitrogen in varying amounts. Although nitrogen is not a major component of oceans
The leachates were characterized by a high concentration of ammonia nitrogen (over 1,000 mg/dm3) and low BOD5/COD ratio (0.06 in average), which indicated their negligible susceptibility to biodegradation. The concentration of activated sludge in the membrane bioreactor was maintained within 3.5鈥...
Nitrogen must be converted into forms such as nitrate (NO 3 − ) or ammonia (NH 3 ) before it becomes a useful nutrient for most photosynthetic organisms. While the biological cycling of nitrogen is very important in the ocean, it has only a slight effect on the amount of nitrogen gas...
3. If 27.2 g of gaseous ammonia is passed over 135.6 g of heated copper(II) oxide to produce nitrogen, copper and water vapour find: 2 NH3(g) + 3CuO(s)N2(g) + 3Cu(s) + 3 H2O(g) a. the limiting reactant. b. the mass of nitrogen formed c. the mass of copper...
The table below shows the percentage composition of air. At a pressure of 1.013 bar the oxygen content is 21.224%, the partial pressure of oxygen in air is = 0.21224 bar or 212.24 mbar. The table can therefore be interpreted for partial pressures of the gas mixture in air Gas Nitrogen ...
Improvements in the manufacture and production of fertilisers containing a high percentage of nitrogenA fertilizer is obtained by acting with sulphur dioxide and ammonia substantially in the proportions by volume of 1 : 2, or gas mixtures containing these substances in corresponding proportions, on an...
Production of nitrogen - oxygen - compounds, in particular high percentage nitric - acidity, by catalytic combustion of ammonia with oxygen or oxygen-containing gasesCEDERBERG DR. IVAR WALFRIED
99/03668 Effect of change in hydrogen and nitrogen partial pressures in syngas on ammonia conversion percentage on molten iron catalyst: Wang, R. Huafei Gongye, 1998, 25, (1), 19–25, 40. (In Chinese) - ScienceDirectdoi:10.1016/S0140-6701(99)98874-4ELSEVIER...
Production of biomethane from mono-digestion of U. lactuca, however is problematic due to high levels of sulphur and low ratios of carbon to nitrogen. Fresh and dried U. lactuca were continuously co-digested with dairy slurry at ratios of 25%, 50% and 75% (by volatile solid content) in ...