UTILIZING THE ALUMINUM CONTAINED IN USED BOTTLE CAPS TO MAKE ALUM

  • Suyata Suyata Fakultas MIPA, Universitas Jenderal Soedirman, Indonesia
  • Irmanto Irmanto Fakultas MIPA, Universitas Jenderal Soedirman, Indonesia
  • Puji Lestari Fakultas MIPA, Universitas Jenderal Soedirman, Indonesia
  • Niken Istikhari Muslihah Fakultas MIPA, Universitas Jenderal Soedirman, Indonesia
  • Nurmalia Candra Oktaviani Fakultas MIPA, Universitas Jenderal Soedirman, Indonesia
  • Dinda Argany Fakultas MIPA, Universitas Jenderal Soedirman, Indonesia
DOI: https://doi.org/10.20884/1.semnaslppm.2024.13.1.10338

Abstract

Used bottle caps are inorganic waste that still have benefits because they contain 75.51% aluminum metal. Therefore, it is necessary to carry out research to reuse aluminum metal. The research aimed to determine the concentration of KOH, H2SO4, temperature, time, and weight of used bottle caps to obtain the maximum alum weight.  Alum is made by reacting aluminum with KOH  at  a certain temperature and time. Next, the filtrate is cooled to room temperature, then H2SO4 is added to form alum crystals. The alum crystals were washed with 70% ethanol, then dried in an oven at 75℃, cooled in a desiccator, and then weighed. To obtain the maximum weight of alum, variations in KOH,   and H2SO4 concentrations, temperature, time, and weight of used bottle caps were carried out. A used bottle cap weighing 3.0081 grams was reacted using 50 mL of 15% KOH and 30 mL of 7 mol/Liter H2SO4, a heating time of 10 minutes at a temperature of 80℃ resulting in a maximum alum weight of 39.5963 grams. The function of alum is as a coagulant to precipitate pollutants in wastewater to produce clean water.


 


Keywords: aluminum, sulfuric acid, potassium hydroxide, alum coagulant, inorganic waste


 

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Published
2024-01-11
How to Cite
SUYATA, Suyata et al. UTILIZING THE ALUMINUM CONTAINED IN USED BOTTLE CAPS TO MAKE ALUM. Prosiding Seminar Nasonal LPPM UNSOED, [S.l.], v. 13, n. 1, p. 10-16, jan. 2024. ISSN 2985-9042. Available at: <https://jos.unsoed.ac.id/index.php/semnaslppm/article/view/10338>. Date accessed: 17 sep. 2024. doi: https://doi.org/10.20884/1.semnaslppm.2024.13.1.10338.
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Vol 13 No 1 (2024): Prosiding Seminar Nasional LPPM UNSOED 2023 : Bidang 7 - Ilmu Dasar dan Rekayasa Keteknikan
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Articles
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