Briliant: Jurnal Riset dan Konseptual
Vol 11 No 2 (2026): Volume 11 Nomor 2, Mei 2026

EKSTRAKSI ALUMINA DAN BESI DARI LIMBAH FLY ASH MENGGUNAKAN ASAM SULFAT

Maria Tania Sagala (UPN "Veteran" Jawa Timur)
Mikail Ali Reza (UPN “Veteran” Jawa Timur)
Sutiyono Sutiyono (UPN “Veteran” Jawa Timur)



Article Info

Publish Date
23 May 2026

Abstract

Fly ash contains alumina and iron that are generated during industrial production processes. Effective utilization of fly ash requires a clear understanding of its physical and chemical properties to ensure optimal use. Fly ash comprises various components, including 13.05 wt% SiO₂, 16.04 wt% Al₂O₃, 36.06 wt% Fe₂O₂, and 6.20 wt% CaO. The objective of this inquire about was to decide the degree to which alumina and iron can be extracted by means of sulfuric acid (H₂SO₄) leaching. The experimental variables included extraction temperature 85, 90, 95, 100, and 120°C and H₂SO₄ concentration at 3, 6, 9, 12, and 15% by volume. The procedure began with standardizing the fly ash by grinding to 60 mesh, followed by washing and drying. Next, the extraction process was carried out for 60 minutes with the addition of an aqueous H₂SO₄ solution. The coming about filtrate was analyzed utilizing Nuclear Retention Spectrophotometry (AAS) to evaluate the concentrations of broken up aluminum and iron. The highest extraction rates were achieved at 120°C with 15% H₂SO₄, yielding approximately 2.79% Al and 7.61% Fe.

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Journal Info

Abbrev

BRILIANT

Publisher

Subject

Civil Engineering, Building, Construction & Architecture Computer Science & IT Education

Description

BRILIANT : Jurnal Riset dan Konseptual published by Universitas Nahdlatul Ulama Blitar. Published four times a year in print and online. Journals are published every three months, in February, May, August and November. The article topics contained in this journal are the results of research and ...