WSEAS Transactions on Environment and Development
Print ISSN: 1790-507, E-ISSN: 2224-3496
Volume 19, 2023
Variation of Polietilena Glikol (PEG) Volume Ratio Addition to the Extraction and Synthesis of Hematite (Fe2O3) from Iron Ore of Pemalogan Village using the Precipitation Methods
Authors: ,
Abstract: The synthesis of hematite iron oxide from iron ore in Pemalongan village was carried out using an easy and simple method, namely precipitation. The purpose of this study was to determine the extraction results, crystal structure and crystal size of the compounds synthesized using the precipitation method. Iron ore processing is carried out by reacting 37% (w/w) HCl by dripping 25% (v/v) $$NH_{4}OH$$ as a precipitating agent and adding PEG-200 to control particle size by varying the volume ratio of PEG-200: Iron 1:5 ( mL/g), 2:5 (mL/g), and 3:5 (mL/g). Then calcined at 500°C for 2 hours. The synthesis results were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results of XRD analysis with varying volume ratios of PEG-200:iron 1:5 (mL/g), 2:5 (mL/g), and 3:5 (mL/g) have formed a hematite iron oxide phase. The synthesis results with a volume ratio of 1:5 (mL/g) produced the highest purity and had a trigonal geometric structure, cell parameters a = 5.036340 Å; b = 5.036340 Å; and c = 13.345420 Å; α = β = 90˚; γ = 120˚ and the space group is R3 c. Calculation of crystal size using the Debye Scherrer equation results in variations in the volume ratio of PEG-200: Iron 1:5 (mL/g), 2:5 (mL/g), and 3:5 (mL/g) is 50.9912 nm; 43.08837 nm; and 45.30663 nm. The SEM characterization results showed that the iron oxide hematite produced from the synthesis clumped and formed small non-uniform grains.
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Pages: 262-271
DOI: 10.37394/232015.2023.19.23