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All Journal Equilibrium Journal of Chemical Engineering
Srie Muljani
Chemical Engineering Department, Engineering and Science Faculty, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Indonesia 60294
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

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Characteristic of the CaO-MgO Material Derived from Dolomite via Precipitation-Dehydration Method Maudy Pratiwi Novia Matovanni; Ketut Sumada; Srie Muljani; Beta Cahaya Pertiwi
Equilibrium Journal of Chemical Engineering Vol 9, No 1 (2025): Volume 9, No 1 July 2025
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v9i1.104095

Abstract

Abstract. This research utilized dolomite rock (CaMg(CO2)2) to produce CaO-MgO material using precipitation-dehydration. The precipitation-dehydration method was carried out by dissolving dolomite in 10% hydrochloric acid (HCl) solvent and precipitating in 2 N sodium hydroxide (NaOH) solution at a temperature of 80 oC. The resulting products were analyzed using Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX) and Brunauer-Emmett-Teller (BET). The acidity level of the solution was analyzed by using a pH meter. The analysis results using SEM-EDX show that the material has a characteristic chemical composition with a Ca/Mg ratio less than 1. The results of BET show that the average surface area, average pore volume, average pore size and average particle diameter are 71.1213 m2/g, 0.1081 cc/g, 20.5165 nm, and 36 nm, respectively. The solution's acidity (pH level) in precipitation-dehydration is 8-8.5. It is identified that precipitation-dehydration can be used for CaO-MgO recovery and further application in catalyst materials.Keywords:Dolomite rock, Calcium oxide, Magnesium oxide, Precipitation-dehydration
Co-Authors Ketut Sumada Matovanni, Maudy Pratiwi Novia Pertiwi, Beta Cahaya