Fluxes of atmospheric ammonia-nitrogen (NH3-N, where NH3-N 5 (14/17)NH3) from an anaerobic ;2.5 ha (1 ha 5 10,000 m ) commercial hog waste storage lagoon were measured during the summer of 1997 through the spring of 1998 in order to study the seasonal variability in emissions of NH3-N and its relationship to lagoon physicochemical properties. Ammonia-nitrogen fluxes were measured during each se...

The known five-coordinate, square-pyramidal, green trans-RuCl2(P-N)(PR3) complexes (P-N = o-diphenylphosphino-N,N'-dimethylaniline; R = Ph (1a), p-tolyl), in the solid state at ambient conditions, or in CDCl3 solution at low temperatures, coordinate CO (at 1 atm) to form beige-coloured trans-monocarbonyl derivatives. In the solution reactions at room temperature, the PR3 ligand dissociates and ...

Experiments with carbamoyl phosphate synthetase (ammonia) in solution and in isolated mitochondria are reported which show the following. NH3 rather than NH4+ is the substrate of the enzyme. The apparent Km of NH3 for the purified enzyme is about 38 microM. The apparent Km for NH3 measured in intact isolated mitochondria is about 13 microM. This value was obtained for both coupled and uncoupled...

This study evaluated the sensitivity of juveniles of two freshwater unionid mussel species (Villosa iris [Lea] and Lampsilis fasciola [Rafinesquel) to un-ionized and total ammonia. Five concentrations of ammonium chloride were tested using 96-h static-renewal toxicity tests at 12 and 20 degrees C. Based on their respective mean 96-h lethal concentration to 50% (LC50s), V. iris (0.11 mg/ L NH3-N...

Vermifilter is a greywater waste treatment by utilizing the symbiosis of earthworms with microbes. more efficient, simple in design, and easy to maintain. The purpose this study was determine effect vermibed material on concentration BOD5, NH3-N, DO using vermifilter. used four vermifilter reactors (VF) filtration media for gravel, coconut fiber, rough sand, vermibed. Reactor VF1 uses mixture m...

Gas mixture of H2S and NH3 in this study has been the focus in the research area concerning gases generated from the animal husbandry and the anaerobic wastewater lagoons used for their treatment. A specific microflora (mixture of Thiobacillus thioparus CH11 for H2S and Nitrosomonas europaea for NH3) was immobilized with Ca-alginate and packed inside a glass column to decompose H2S and NH3. The...

We evaluated the performance of the Du Pont aca ammonia procedure with regard to (a) linearity, (b) precision, (c) interferences, and (d) effect of anticoagulants. Linearity extends to 2,000 mumol/L. The SD of the method was essentially constant (2 to 3 mumol/L) and independent of the NH3 concentration. Hemoglobin, bilirubin, and lipemia do not interfere. Either EDTA or heparin is suitable as a...

Efficient, comprehensive, continuous, and accurate monitoring of organic pollution in lakes can provide a reliable basis for water quality assessment prevention This paper takes Dianchi Lake as the research object, aiming at four important indexes permanganate index (COD), dissolved oxygen (DO), hydrogen ion (pH), ammonia nitrogen (NH3-N); based on correlation analysis Landsat 8 data measured d...

the effect of eucalyptus (eucalyptus globulus labill;egeo) and angelica (heracleum persicum desf. ex fischer; hpeo) essential oils was assessed at the levels of 0, 3, 30, 300 or 3000 (µl 30 ml-1) on in vitro fermentation of buffered rumen fluid from 3 castrated male sheep. the fermentation kinetics were estimated after 54 hours incubation. the fermentation kinetic values, in vitro gas productio...

In open beef feedlot systems, more than 50% of dietary nitrogen (N) is lost as ammonia (NH3). Here we report an effective and economically-viable method to mitigate NH3 emissions by the application of lignite. We constructed two cattle pens (20 × 20 m) to determine the effectiveness of lignite in reducing NH3 emissions. Twenty-four steers were fed identical commercial rations in each pen. The t...