Natural gas is often associated with nitrogen and heavy compounds. The Heavy components in the natural gas not only can feed downstream units, owing to the low temperature process may be formed solid as well. Therefore, heavy components separation can be a necessity and produce useful products. Virtually, all natural gases are containing nitrogen ​​that would lower the heating value of natural ...

High concentrations of nitrogen compounds, such as ammonia observed in the petrochemical industry, are the major environmental pollutants. Therefore, effective and inexpensive methods are needed for its treatment. Biological treatment of various pollutants is a low cost and biocompatible replacement for current physico-chemical systems. The use of aquatic plants is an effective way to absorb th...

Introduction: Hyperammonemia occurs as a result of the inability to convert ammonia, metabolic toxin, into urea due block in cycle, and there resulting neurotoxicity is responsible for pathogenesis. Case Presentation: Our patient was 7 days old when followed up an external center 3 with preliminary diagnosis neonatal sepsis. Lethargy, vomiting, tachypnea, convulsions, which are frequently seen ...

We have computed vibrational high-frequency overtone spectra of the water-ammonia complex, H(2)O-NH(3), and its isotopomers. The complex has been modeled as two independently vibrating monomer units. The internal coordinate Hamiltonians for each monomer unit have been constructed using exact gas phase kinetic energy operators. The potential energy and dipole moment surfaces have been calculated...

This paper expounded the urea ammonia production process of SCR denitration, and maked a detailed technical economic comparison analysis various routes such as hydrolysis, pyrolysis (electric heating) gas heat exchange. The research showed that hydrolysis were widely used had their own advantages disadvantages. Taking 300 MW unit an example, practical application was carried out: considering di...

Ammonia emission from animal facilities is a world-wide research focus area, because ammonia is a nuisance for the external environment. It is therefore important to know how ammonia emissions depend on various factors, such as animal activity and ventilation rate. The objective of this paper is to show the impact of animal activity on the variation of the diurnal ammonia emission in controlled...

Ab initio MP2(full)/aug-cc-pVTZ calculations have been carried out to investigate the halogen transfer between haloamines and ammonia. The results show that the formation of a halogen bond complex between ammonia and the protonated N-haloamine is a preliminary step in the halogen transfer process. The complexation energies, optimized geometries, topology of electron density and potential energy...

A thermophilic bacterium, strain TAT105, was isolated from compost made of animal wastes. TAT105 had high tolerance to ammonium nitrogen up to 1200 mM, and highly assimilated nitrogen during the growth on swine feces. The strain was classified into Bacillus, close to Bacillus pallidus. To evaluate the effect of adding TAT105 to ammonia (NH3) emission during the composting process of animal wast...

The effect of a commercial manure additive (Alliance®) on ammonia (NH3) emissions was evaluated in commercial 1000-head grow-finish swine buildings over a six-month period. The test was conducted in two treated and two control buildings at a modern swine-finishing site consisting of nine identical buildings. Automatic spray application systems in the treated buildings intermittently sprayed the...

In this paper the effect of heat and ammonia treatment on the change in colour of oak wood (Quercus robur) and comparison of physical and mechanical properties were investigated. Wood specimens were made from heartwood and sapwood in dimensions 30×30×30 mm3. The specimens were subjected to heat treatment at 180oC and 230oC for 2 and 4 hours, others were treated by ammonia for 24 hours. After th...