logo
calendar5 Iyul 2026
view47
Main language:Uzbek

PRODUCTION OF ORGANO-MINERAL FERTILIZERS BASED ON OFF-GRADE PHOSPHORITES AND SEWAGE SLUDGE

Field of Science:Chemistry (miscellaneous)Physical and Theoretical Chemistry
National field of science (HAC):01.04.06 — Polymer physics02.00.01 — Inorganic chemistry02.00.02 — Analytical chemistry02.00.03 — Organic chemistry02.00.04 — Physical chemistry02.00.06 — High-molecular compounds02.00.07 — Chemistry and technology of composite, paint-and-varnish and rubber materials02.00.08 — Chemistry and technology of oil and gas02.00.09 — Commodity chemistry02.00.10 — Bioorganic chemistry02.00.11 — Colloid and membrane chemistry02.00.12 — Nanochemistry, nanophysics and nanotechnology02.00.13 — Technology of inorganic substances and materials based on them02.00.14 — Technology of organic substances and materials based on them02.00.15 — Technology of silicate and refractory non-metallic materials02.00.16 — Processes and apparatuses of chemical technology and food production04.00.08 — Mineralogy. Crystallography06.01.04 — Agrochemistry11.00.03 — Land hydrology. Water resources. Hydrochemistry15.00.02 — Pharmaceutical chemistry and pharmacognosy02.00.05 — Chemistry and technology of cellulose and pulp-and-paper production02.00.17 — Technologies and biotechnologies for processing, storage and refining of agricultural and food products04.00.02 — Geology, prospecting and exploration of solid mineral deposits. Metallogeny and geochemistry
pdf

3-article. PRODUCTION O....pdf

PDF

Scientific and technical journal "Digital Technologies in Industry"

Scientific and technical journal "Digital Technologies in Industry"

Publish Articlesee more

ARTICLE ANNOTATION

quote
This study investigates the feasibility of producing organo-mineral fertilizers based on off-grade phosphorite mineralized mass and sewage sludge generated at biochemical municipal wastewater treatment facilities. Phosphorite–sludge mixtures were prepared at mass ratios ranging from 90:10 to 30:70 and chemically treated with 30% sulfuric acid at 50–90% of the stoichiometric requirement relative to calcium oxide. The resulting slurries were separated into liquid and solid phases, and the contents of total P₂O₅, organic matter, humic acids, and fulvic acids were determined. The results showed that increasing the phosphorite fraction led to higher phosphorus levels, whereas increasing the sludge fraction caused a pronounced rise in organic matter, particularly fulvic acids in the liquid phase. A higher sulfuric acid dosage enhanced phosphorus transfer to the liquid phase and promoted the formation of stable complexes with organic components. The study provides scientific justification for producing a fast-acting liquid fertilizer enriched with fulvic acids, as well as a slow-release solid organo-mineral fertilizer dominated by humic acids.

AUTHORS

Science ID: MNV-0326-0012

Science ID: FNV-1225-0029

Tags

# fosforit# fulvokislotalar# kislotalar# o‘g‘it# sulfat# oqova# suvlar# cho‘kindisi# organik-mineral# kislotasi# gumin

SIMILAR ARTICLES

OTHER ARTICLES IN THIS JOURNAL

Rate Article

0
0 ratings
5
4
3
2
1

References

[1] Гаспарян, И. Н., & Сорокин, К. Н. (2022). Проблемы производства гуминовых удобрений и их решения. Агроинженерия, 24(1), 23–27.

[2] Роганов, В. Р., Касимова, Л. В., Телянова, А. В., & Елисеева, И. В. (2014). Исследование способов извлечения из низинного торфа гуминовых препаратов. Современные проблемы науки и образования, (6), 1411.

[3] Вишнякова, А. А. (1986). Фосфорные удобрения из каратауских, гулиобских и других фосфоритов. Москва: Химия.

[4] El-Banna, A. A., & Abd El-Rahman, S. H. (2018). Partial acidulation of phosphate rock and its agronomic effectiveness. Journal of Plant Nutrition, 41(12), 1547–1558.

[5] Stevenson, F. J. (1994). Humic substances in soil, sediment, and water: Geochemistry, isolation, and characterization. New York: John Wiley & Sons.

[6] Zhang, H., Wang, X., & Li, Y. (2023). The effective combination of humic acid and phosphate fertilizer on phosphorus availability and crop uptake. Agronomy, 13(6), Article 1581.

[7] Kelessidis, A., & Stasinakis, A. S. (2012). Comparative study of the methods used for treatment and final disposal of sewage sludge in European countries. Waste Management, 32(6), 1186–1195.

[8] Liu, R., & Zhao, D. (2019). Fulvic acid enhanced phosphorus availability and mobility in calcareous soils. Soil Science Society of America Journal, 83(2), 375–384.

[9] Harrison, E. Z., Oakes, S. R., & Hysell, M. (2006). Organic chemicals in sewage sludges. Science of the Total Environment, 367(2–3), 481–497.

[10] Rahman, M. M., & Tsukamoto, J. (2014). Chemical transformation of phosphorus during composting and acid treatment of organic wastes. Bioresource Technology, 168, 68–75. https://doi.org/10.1016/j.biortech.2014.06.018