Nitrate transport and assimilation in plants: a potential …
Nitrogen (N) plays a key role for plant life cycle. It is available in agricultural soils as the form of nitrate and ammonium (NH4+) where nitrate (NO3−) is a major nutrient.
Ammonium nitrate
Once ammonium nitrate becomes molten (particularly if confined) the risk of an explosion increases. This risk increases dramatically if the pH of molten ammonium nitrate falls or if it comes into contact with oxidisable material for instance organics such as oil, diesel, paper, rag, or straw. Ammonium nitrate may explode due to the following ...
Simplified numerical simulation model for hydroxyl ammonium nitrate …
A simplified model is proposed to simulate the working process of hydroxyl ammonium nitrate-based monopropellant rocket engines. The porous medium model and volume-of-fluid model are used to solve ...
The optimal ammonium-nitrate ratio for various crops
Typically, the nitrogen form status regarding ammonium and nitrate is categorized into five groups in related studies as well as in most retrieved studies, including pure ammonium nitrogen, pure nitrate nitrogen, an equal proportion mixture of ammonium nitrate, a mixture with ammonium dominance (with the ANR mostly fixed at 75:25, with a few ...
Small-scale cook-off experiments and models of ammonium nitrate …
Abstract. Here, we have completed a series of small-scale cook-off experiments of ammonium nitrate (AN) prills in our Sandia Instrumented Thermal Ignition test at nominal packing densities of about 0.8 g/cm 3.We increased the boundary temperature of our aluminum confinement cylinder from room temperature to a prescribed set-point temperature in 10 min.
Experimental study of the effect of typical halides on …
The kinetic triplets consist of the activation energy, pre-exponential factor, and the function describing the reaction mechanism. For the non-isothermal experiments conducted at a constant heating rate in this study, the methods of kinetic analysis include model-free method and model-fitting method (Jiang et al., 2015).The methods of obtaining the kinetic parameters …
Development of an on-line source-tagged model for sulfate, nitrate …
An on-line source-tagged model coupled with an air quality model (Nested Air Quality Prediction Model System, NAQPMS) was applied to estimate source contributions of primary and secondary sulfate, nitrate and ammonium (S N A) during a representative winter period in Shanghai. This source-tagged model system could simultaneously track spatial and …
Recovery of ammonium nitrate solution from urine …
As the second (after urea) major nitrogen (N) fertilizer worldwide with an annual yield of ∼16 million tons, ammonium nitrate (AN, i.e. NH 4 NO 3) is an important chemical in human society [1].In addition to its effectiveness in the agricultural industry, AN can also be used for blasting the rocks, quarrying, mining, and civil construction [2].It has been widely applied as …
Kinetic analysis of the thermal decomposition of liquid ammonium …
A detailed reaction mechanism for the liquid-phase decomposition of ammonium nitrate (AN) was modeled based on ab initio calculations, and this model was employed to simulate heat flow curves associated with the decomposition of AN at various heating rates (1, 2, 4, 5, and 8 K min−1) over the temperature range of 443–623 K. A kinetic analysis using the …
A mechanistic model for denitrifying anaerobic methane oxidation
Dissimilatory nitrate reduction to ammonium (DNRA) has recently raised strong questions about the current knowledge on nitrogen ... Fig. 1 B presents the experimentally-observed and model-simulated nitrate removal rate during 320-day operation in the SBR. biofilms that were detached from the counter-diffusion MBfR were used as inoculum to start ...
Blasting Principles
Ammonium Nitrate Emulsion (also called EP or Emulsion Phase) is ammonium nitrate dissolved in water and suspended in oil. It is an oxidising agent used to manufacture a range of bulk blasting agents. The oil surface gives emulsion …
(PDF) Mathematical Modeling and Simulation of Drying …
Keywords Ammonium nitrate plant; Concurrent and countercurrent; Drying kinetics; Mathematical model; Rotary dryer INTRODUCTION Ammonium Nitrate Plant The Shiraz Petrochemical Complex (SPC) is a large chemical complex involving manufacture of several products such as ammonia, nitric acid, and ammonium nitrate. The capacity of the …
A Sediment Diagenesis Model of Seasonal Nitrate and Ammonium …
Constructing the Sediment Diagenesis of Nitrate (NO 3), Ammonium–Nitrogen Flux Model T welve (12) parameters were selected for the sediment diagenesis model chosen through a detailed
Ammonium nitrate production – technology and industrial …
The ammonium nitrate solution from the pipe reactor neutralisation step is first concentrated to 99,8 % in an air swept falling film evaporator, with steam condensing in the shell. If porous ammonium nitrate prills suitable for industrial explosives are to be made, then 95 % solution is pumped directly to the mixing tank for re-dissolving ...
Burn Rate Mechanisms. Volume 2. A Model for …
A Model for Ammonium Nitrate Propellant Combustion (U) 12. PERSONAL AUTHOR(S) Beckstead, M.W. 13a. TYPE OF REPORT Final 13b. TIME COVERED FROM 8608 TO 8812 14. DATE OF REPORT (Year, Month, Day) 9002 15. PAGE COUNT 130 16. SUPPLEMENTARY NOTATION This is volume 2 of a two volume report
Effect of hydrolysis of N2O5 on nitrate and ammonium formation in
Request PDF | Effect of hydrolysis of N2O5 on nitrate and ammonium formation in Beijing China: WRF-Chem model simulation | Beijing, the capital of China, is a mega city with a population of > 20 ...
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m/sbm ammonium nitrate por le crusher.md at main · …
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TL-2800 AMMONIA/NITRATE ANALYZER SYSTEM …
TL-2800 AMMONIA/NITRATE ANALYZER SYSTEM INSTRUCTION MANUAL Timberline Instruments, LLC 1880 S. Flatiron Ct., Unit I Boulder, Colorado 80301 Ph: (303) 440-8779 Fx: (303) 440-8786 Email: info@t-line 2 Timberline Model TL-2800 Ammonia/Nitrate Analyzer System Instruction Manual TABLE OF CONTENTS
An experimental and theoretical study of optimized selection and model
Ammonium nitrate (AN) is a commonly-used industrial raw material in industrial explosives and fertilizers areas. However, as an energetic material, its danger exists during the production, transportation, and storage, resulting in a large number of accidents involving personal injury and property loss. ... Model reconstruction based on KCE ...
Blasting Principles
Ammonium Nitrate Emulsion (also called EP or Emulsion Phase) is ammonium nitrate dissolved in water and suspended in oil. It is an oxidising agent used to manufacture a range of bulk blasting agents. The oil surface gives emulsion based products improved water resistance. ... Crusher. A machine used for reducing the size of rock and minerals by ...
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Aerosol forcing in the Climate Model Intercomparison Project (CMIP5
Model skill in simulating FFBC in the Arctic is discussed in section 4.3. The organic carbon component is strongly underestimated by the model in winter and spring when FFOC is the main source of organic carbon. ... [47] The inclusion of ammonium nitrate aerosols does not increase aerosol forcing much before 2000, but mitigates its decrease in ...
Effect of hydrolysis of N2O5 on nitrate and ammonium …
In this study, the effect of the hydrolysis of N 2 O 5 on nitrate (NO 3 −) and ammonium (NH 4 +) in Beijing, China is studied.Although Beijing locates in the middle latitude (39.9°N) of the Northern hemisphere, these above conditions, which are favorable for the hydrolysis of N 2 O 5, are often occurred during high aerosol pollution periods.During these …
Dynamic model for simulating transient behaviour of …
mathematical model of a granulation loop, including models of a rotary drum, screens, and a crusher, is given. In Section 3, the numerical solution methods for the developed model are provided. Simulation setup, results, and discussions are given in Section 4, while conclusions are drawn in Section 5. 2 Model development 2.1 Model for granulator
Assessing the ammonium nitrate formation regime in the …
This paper presents the first combined measurements of both ammonium nitrate aerosols and their gaseous precursors (HNO 3, NH 3) in the Paris megacity, obtained during the FRANCIPOL and PARTICULES campaigns.This data set is used to investigate the nitrate formation regime within the city, which is particularly important considering the high …
A novel industrial-scale strategy to prevent
In this study, ammonium nitrate was produced via a two-stage process by using nitric acid (55%) and anhydrous ammonia (99.9%), as condoned by the European Fertilizer …
Decomposition and Growth Pathways for Ammonium Nitrate …
Understanding the formation and decomposition mechanisms of aerosolized ammonium nitrate species will lead to improvements in modeling the thermodynamics and kinetics of aerosol …
Coating of calcium ammonium nitrate fertilizers with model …
An aq. soln. of Cu, Zn or Mn chelate was sprayed into a fluidized bed of CAN fertilizer which was then dried with air at 50°C for 15 min. Total N content, bulk d., granule hardness, content of ...
An experimentally validated nitrate–ammonium–phytoplankton model
The first experiments with nitrate- and ammonium-only tested the model against data from two single-N experiments, and showed that, in the absence of starvation or multiple N sources, observed trajectories are well characterized by the model: residual variation was small compared to the mean and symmetrically distributed around zero (Fig. 2 ...