SCIENCE AND INNOVATION
INTERNATIONAL SCIENTIFIC JOURNAL VOLUME 2 ISSUE 3 MARCH 2023
UIF-2022: 8.2 | ISSN: 2181-3337 | SCIENTISTS.UZ
44
STUDY OF POROUS PHOSPHO-GYPSUM COMPOSITES AND
THEIR PROPERTIES ON THE BASIS OF
NOSTOCHIOMETRIC INTERPOLYMER COMPLEXES
Komilov Kamaridin Urinovich
Associate professor of the "Chemistry" department of Chirchik state
pedagogical university
https://doi.org/10.5281/zenodo.7712952
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 feedingin 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.
Keywords:
phosphogypsum, chemical ameliorant, chemical reclamation, salinization,
gypsum, calcium dihydrate, interpolymer complex, composite material.
Introduction.
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. And one of the main types of waste is waste from the chemical
industry.
So, in the production of mineral fertilizers, various types of waste are generated, among
which phosphogypsum is a waste of the production of phosphate fertilizers [2]. It should be noted
that at present, a significant layer of problems of a geoecological nature is generally observed,
associated primarily with extensive forms
of environmental management, environmental
degradation for various reasons [3; 4], including the irrational management of many sectors of
nature management [5].
Currently, there are more than 60 million tons of phosphogypsum in the dumps of
Ammofos-Maxam OJSC and its amount continues to increase annually (in
terms of calcium
dihydrate). 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 chemical composition of
phosphogypsum mainly contains oxides of calcium, sulfur and silicon with an admixture of oxides
of iron, aluminum, magnesium, phosphorus, sodium and others. As can be seen from the table, the
mass fraction of the main substance (CaSO4 ∙ 2H2O) in terms of dry dihydrate is 97%, the mass
fraction of hygroscopic moisture is 16.4%, the content of water-soluble fluoride compounds in
terms of fluorine is 0.12%. Impurities
of toxic compounds of cadmium, arsenic,