SYNTHESIS KALIUM ALUMUNIUM SULPHATE (ALUM) FROM ALUMUNIUM FOIL WASTE USING KOH AND H2SO4 . Settings Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit [Internet]. 2024 Dec. 16 [cited 2024 Dec. 22];22(1):45-51. Available from: https://e-jurnal.atk.ac.id/index.php/bptkspk/article/view/16