Molecular-diffusion mass transfer of substance in soil medium

Gumnitskii, Ya. M.; Lyuta, Oksana

doi:10.1134/s0040579514040174

Cited by 6 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the third stage, the simplified mathematical models are developed for describing the migration processes of nutrients in the soil layer [3][4][5]. These models allow predicting the kinetics of granule dissolution in the system "granule -moist porous medium".…”

Section: Literature Reviewmentioning

confidence: 99%

Mathematical Modeling of Nutrient Release from Capsulated Fertilizers

Vakal

Pavlenko

Vakal

et al. 2019

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

The article is devoted to the study of reducing the technogenic load from high-dose nitrogen pollution of the soil layer by encapsulating granules of nitrogen fertilizers in slowly soluble phosphate-containing membranes. The process of dissolving and washing out of the primordial soil layer of the nutrients from urea, encapsulated by superphosphate shells in soil columns, was studied according to agrochemical techniques. The purpose of the work is to determine the parameters of the investigated process, based on which the previously developed physical model of soil washing of moving nitrogen forms, based on experimental data. The process of changing the loss of nitrogen from the soil when using different types of fertilizers depending on the amount of washing was studied by simulation. Mathematically, the process is described in general terms as a linear differential equation of the first order in partial derivatives. The solution of the equation under the initial and boundary conditions allowed to calculate the parameters of the model describing the nature of changes in the losses of nitrogen from the soil column. Comparison of calculated and experimental data showed a coincidence of values with a correlation coefficient above 0.96 for investigated nitrogen fertilizers with different composition of the phosphate-containing coating.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Mathematical Modeling of Nutrient Release from Capsulated Fertilizers

Vakal

Pavlenko

Vakal

et al. 2019

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Compared to air and water, pollution of soil is very non-homogeneous and often local due to a slower diffusion of chemicals [3,4]. Therefore, monitoring of soil always requires taking and analyzing greater number of samples.…”

Section: Introductionmentioning

confidence: 99%

Perspectives and challenges of on-site quantification of organic pollutants in soils using solid-phase microextraction

Kenessov

Kozieł

Bakaikina

et al. 2016

TrAC Trends in Analytical Chemistry

View full text Add to dashboard Cite

This study explores the current state-of-the-art progress toward on-site quantification of organic pollutants in soils with solid-phase microextraction (SPME). In spite of many available methods, only few publications report on-site analyses of soil samples by SPME. To date, the only application of SPME for the on-site quantification of organic pollutants in soil has been devoted to trichloroethylene. The problem of matrix effects limiting quantification by external standard calibration is discussed. Efficiencies of available approaches for decreasing and controlling matrix effects are evaluated and compared. SPME from a soil sample headspace with internal standard calibration was identified as one of the promising approaches to achieve fast, simple, precise, and accurate on-site quantification of a wide range of organic pollutants in soil. Cold-fiber SPME has a significant development potential, because it is capable of providing lowest detection limits together with a minimum matrix effect. Perspectives for future development of the field are outlined.

show abstract

Modelling and development of a modular oscillating-bed adsorption reactor system for copper ion removal from water in emergency

Cao

Zheng

et al. 2020

Separation and Purification Technology

View full text Add to dashboard Cite

Molecular-diffusion mass transfer of substance in soil medium

Cited by 6 publications

References 10 publications

Mathematical Modeling of Nutrient Release from Capsulated Fertilizers

Mathematical Modeling of Nutrient Release from Capsulated Fertilizers

Perspectives and challenges of on-site quantification of organic pollutants in soils using solid-phase microextraction

Modelling and development of a modular oscillating-bed adsorption reactor system for copper ion removal from water in emergency

Contact Info

Product

Resources

About