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PRESENT-DAY METHODS OF REGENERATION OF EXHAUST LUBRICANT OILS

А.А.Javadova, K.T.Kerimov, A.R.Yusifova

NEW METHODS OF REGENERATION OF USED LUBRICATING OİL

H.А.Javadova, K.T.Karimov, A.R.Yusifova

INFLUENCE OF TECHNOLOGICAL PARAMETERS ON THE CATALYTIC AND REGENERATION PROPERTIES OF CoHZSM-SO₄^2-/ZrO₂ COMPOSITE SYSTEM OF LOW-TEMPERATURE ISOMERIZATION OF STRAIGHT-RUN GASOLINES

S.I. Abasov, S.B. Agaeva, D.B. Tagiev, M.T. Mamedova, A.A. Iskenderova, A.A. Imanova, Y.S. Isayeva, F.M. Nasirova

NANO-STRUCTURED VERMICULITE CLAY FOR HIGH-PERFORMANCE ADSORPTION OF MALACHITE GREEN DYE: STRUCTURAL CHARACTERIZATION AND REGENERATION POTENTIAL

Aseel M. Aljeboree¹, Ali Fawzi Al-Hussainy², Usama S. Altimari³, Shaima Abd⁴, Zainab A. Alhassan⁵, Ayad F. Alkaim¹

This study employed nanoclay as a low-cost, environmentally friendly adsorbent for the effective removal of malachite green (MG) dye from aqueous solutions. The nanoclay was characterized using XRD, FESEM, TEM, TGA, and FTIR. Structural and morphological analyses confirmed a porous, multilayered structure that was enhanced…

Keywords: Vermiculite, Clay, Dye, Malachite green, Nano, Removal, Regeneration

DOI: 10.65382/2221-8688-2026-4-619-634

ESTIMATION OF QUALITY OF REGENERATED SAND FOR FORMING MIXES OF PIG-IRON СASTINGS

N.Sh.Ismailov

Features of regeneration of the exhausted sand for use in forming mixes have been considered. The method of clearing of the surface of sand from impurity has been offered, allowing for better adjusting properties of mixes.

INVESTIGATION OF THE PHYSICOCHEMICAL PROPERTIES OF RECOVERED OIL BY DETERMINING THE OPTIMAL AMOUNTS OF ACIDS AND ADSORBENTS IN THE USED OIL RECYCLING PROCESS

Т.E. Juraev^1*, O.Y. Ismailov¹, Y.Y. Yakubov¹, A.U. Auesbaev^1,2,3, D.N. Isamatova², D.P. Radjiboev⁴, M.J. Boltaboeva¹

Abstract. This study explores the purification methods of used lubricating oils from internal combustion engine lubrication systems using hydrochloric acid (HCl), nitric acid (HNO₃), sulfuric acid (H₂SO₄), acetic acid (CH₃COOH), and trichloroacetic acid (CCl₃COOH). The research focuses on the physical and physicochemical properties of the…

Keywords: used oil, bentonite, regenerated oil, acids, viscosity, density, flash point, pour point, acid number.

DOI: 10.32737/2221-8688-2025-4-483-492