Open AccessIntrasoil dispersed phosphogypsum utilization in a small aggregate chernozem system
Author(s) -
Abdulmalik Batukaev,
N. A. Mishchenko,
V. P. Kalinichenko,
Vladimir A. Sukovatov,
В.В. Черненко
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/579/1/012002
Subject(s) - phosphogypsum , chernozem , environmental science , soil science , sapropel , eluvium , soil water , chemistry , raw material , ecology , organic chemistry , biology , mediterranean climate
Unregulated accumulation of phosphogypsum leads to dangerous geochemical flows with an avalanche effect. As a new option for the application of phosphogypsum, its dispersed placement in the small aggregate chernozem system at a depth of its modern anthropogenic illumination was described. A milling method for treating a soil layer of 30–60 cm was developed. Phosphogypsum and soil interact and agrophysical soil properties can be improved. The anthropogenic eluvial-illuvial structure of the soil profile can be eliminated. The morphological, agrophysical properties and soil moisture conditions, thermodynamic processes with Pb2 +, Cd2 + ions, the morphological parameters of the root system and the yield of sunflower after application of phosphogypsum during its utilization by dispersing in the soil layer of 30–60 cm were studied. Improved soil properties and conditions for development of the rhizosphere, passivation of heavy metals as a result of the carbonate-calcium equilibrium in the soil solution were described. The ecosphere and the agricultural production effect of phosphogypsum utilization in chernozem were substantiated.