Sintesis pigmen geothit (α-FeOOH) dari limbah industri kerajinan besi dengan metode presipitasi

Nisa, Choirun and Aini, Nur and Khoiroh, Lilik Miftahul (2019) Sintesis pigmen geothit (α-FeOOH) dari limbah industri kerajinan besi dengan metode presipitasi. Alchemy, 7 (2). pp. 40-45. ISSN 2460-6871

[img]
Preview
Text
7447.pdf - Published Version
Available under License Creative Commons Attribution Non-commercial Share Alike.

Download (303kB) | Preview
Full text available at: http://ejournal.uin-malang.ac.id/index.php/Kimia/a...

Abstract

Iron handicraft is one of industries that process iron ore into handicraft products and produce lathe waste. Iron lathe contains 96.08% iron metal which is potential source as a precursor for synthesis of goethite pigment. The method used for synthesis was precipitation using NaHCO3 as precipitator agent. Synthesis was conducted at 70°C with variations of stirring speed such as 550, 650, 750 and 850 rpm. The products were characterized by color reader, ultraviolet-visible (UV-Vis) spectroscopy, XRD and SEM-EDX. The data from color reader showed that the highest yellowness degree and lightness obtained at a stirring speed 550 rpm were 24.1 and 42.1, respectively. UV-Vis data showed that the maximum wavelength of goethite pigment was 600-624 nm. Based on XRD data, synthesized pigment was in goethite phase (α-FeOOH) for all samples with crystallite size 63.24 nm and the highest crystallinity was achieved at 550 rpm. SEM-EDX data showed that morphology pigment (α-FeOOH) was not uniform, there were impurities such as Na and C.

Item Type: Journal Article
Keywords: lathe waste; precipitation; goethite; pigment
Subjects: 03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030203 Inorganic Green Chemistry
Divisions: Faculty of Mathematics and Sciences > Department of Chemistry
Depositing User: lilik miftahul khoiroh
Date Deposited: 28 Nov 2020 03:37

Downloads

Downloads per month over past year

Origin of downloads

Actions (login required)

View Item View Item