• R. P. PRAJAPATI
• Dr. Rashmi Singhai
• D.R. Tiwari

This article discusses the possibilities of obtaining water-soluble liquid fertilizers enriched with microelements by acid processing of spent catalysts of, widely used in the nitrogen industry. Studies have been conducted on the effect of nitric acid concentration (in the range of 20–50%) on the degree of extraction of macro- and microelements. Physicochemical and rheological properties of the obtained solutions have been determined. The results demonstrate the prospects for developing an energy-efficient technology for processing in spent catalyst waste using local raw materials, which is relevant in the environmental conditions of the Republic of India.

Macro and microelements, system, spent catalyst, liquid fertilizers, nitric acid, processing

"SPENT CATALYSTS AS A SOURCE OF MICRO- AND MACROELEMENTS FOR LIQUID FERTILIZERS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.13, Issue 2, page no.c305-c309, February-2026, Available :http://www.jetir.org/papers/JETIR2602244.pdf

"SPENT CATALYSTS AS A SOURCE OF MICRO- AND MACROELEMENTS FOR LIQUID FERTILIZERS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.13, Issue 2, page no. ppc305-c309, February-2026, Available at : http://www.jetir.org/papers/JETIR2602244.pdf