Abstract
The possibility of using bulk waste of the chemical industry - phosphogypsum as a useful resource is considered. The results of scientific research and practical experience convincingly proved the technical feasibility and feasibility of using phosphogypsum in the national economy instead of traditional types of natural raw materials. A brief description of phosphogypsum, promising areas for its processing, and some statistics are presented. The article is about the use of chemical ameliorant based on phosphogypsum for effective feeding in various soil and climatic zones for cereals, vegetables, industrial and other crops, to increase the yield of cotton and the technological quality of its fiber. That the use of phosphogypsum as a chemical ameliorant improves the chemical, physical and water-physical properties of saline soils.
Highlights
The rapid pace of development of industry, energy, metallurgy, metalworking, chemical, petrochemical and other industries, as well as areas of engineering, construction and household activities entail the inevitable generation and accumulation of industrial waste on a global scale
There are more than 60 million tons of phosphogypsum in the dumps of Ammofos-Maxam OJSC and its amount continues to increase annually
The monitoring studies of the phosphogypsum dump located on the territory of the Almalyk Chemical Plant of Mineral Fertilizers of Ammofos-Maxam OJSC showed that stagnant phosphogypsum has the same chemical and phase composition
Summary
The rapid pace of development of industry, energy, metallurgy, metalworking, chemical, petrochemical and other industries, as well as areas of engineering, construction and household activities entail the inevitable generation and accumulation of industrial waste on a global scale. The monitoring studies of the phosphogypsum dump located on the territory of the Almalyk Chemical Plant of Mineral Fertilizers of Ammofos-Maxam OJSC showed that stagnant phosphogypsum has the same chemical and phase composition. The total area of solonetz Soils in the Republic of Uzbekistan make up more than 2 million hectares, of which about 50% of the irrigated lands of Khorezm and the Republic of Karakalpakistan were subjected to salinization, salinization, and loss of nutrient reserves For this reason, crop yields on these lands decreased by almost 2 times. The Ammophos-Maxam plant in Almalyk has accumulated a huge amount (over 60 million tons) of phosphogypsum, which consists mainly of calcium sulfate dihydrate (CaSO4 ∙ 2H2O), phosphogypsum contains phosphates (1.3 – 2.9%) [20, 21]. In Russia, the largest holdings in the mineral fertilizer industry are Fosagro, Euro Chem and Acron [7]
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