Modelling of the vertical migration process of phosphogypsum components in the soil profile
Journal Title: Журнал інженерних наук - Year 2017, Vol 4, Issue 2
Abstract
This paper focuses on the study of the process of vertical migration of phosphogypsum components according to the soil profile. The qualitative and quantitative identification of main biogenic elements (phosphorus, sulphur, calcium etc) and heavy metals in lysimetric solutions from various horizons while getting on the surface of soil solutions containing phosphogypsum components is carried out by means of designed laboratory and experimental complex. The mineral hard soil fraction is also analysed. According to the results of the X-ray diffractometrical researches, the carbonates with heavy metals in their structure, caused by the ion-exchange with Са2+, were found in the mineral structure of the illuvial horizon soil samples. The results of experimental modeling indicate significant changes in the chemical parameters of groundwater, which are obtained by passing water with phosphogypsum particles on a model soil profile, which makes it easy to track the input data. In the upper part of the profile after 1 000 hours and for the first speed of the infiltration process, the constant moisture level was 25,6%, after the second speed of infiltration, it rose to 29.1 %. Noted that the highest concentration of biogenic elements (calcium, sulfur, potassium) was found in lysimetric solutions obtained from the humus and eluvial horizons. In addition, it is determined that iron is present up to 5 %, nickel – within the range of 1–3 %, and copper – up to 1 %. It should be noted that the biochemical transformations of silicon influence the fractional distribution of heavy metals, which can be fixed by sorption-sedimentation mechanisms in silica, oligo and polysilicon compounds, as well as in crystalline lattice structures of clay minerals, quartz, etc. The model of soil and geochemical situation was formed according to the soil profile under the influence of the phosphogypsum within the three-dimensional surface, developed with the help of the stochastic reconstructions based on the images of the scan electron microscopes.
Authors and Affiliations
Ye. Yu. Chernysh, L. D. Plyatsuk, O. M. Yakhnenko, I. O. Trunova
Keywords
Related Articles
- EP ID EP247882
- DOI 10.21272/jes.2017.4(2).g6
- Views 77
- Downloads 0
Climate change modeling in the context of urban decarbonization strategy
The anthropogenic influence on the Earth’s climate is growing and the risks of the irreversible impacts on ecosystems also increase. This paper is focused on the long-term prediction of the climate change in Kyiv region...
Analysis and development of the method for calculating calibration of the working plank in the cold tube roller rolling mills
In presented paper, which has for aim the development of existing method for calculating the profile of calibrated working plank in the cold tube roller rolling mills, the analysis had been made and it was proposed to us...
The decrease in technogenic load on the environment during the process of absorption of ammonia in soda industry
The article studies the effectiveness of implementation of existing equipment of soda production absorbers for ammonia cleaning from gas emissions. It identifies the major sources of ammonia emissions in the soda ash pro...
Analysis of the application of the galvanic circuits in schemes of the catodic protection for underground papelines
The possibility of using anode earthing in an assembly with a container is considered. Ensuring the integrity of the pipeline is a topical issue in connection with the environmental and economic consequences. The process...
Analysis of the dynamic state of the system "fixture – workpiece"
In this article the vibrations of the “fixture – workpiece” system arising during the cutting process at various manufacturing steps under machining of levers in different fixture systems were investigated by means of nu...