| Autor: |
Ambarita, Michael, Pusparizkita, Yustina M., Schmahl, Wolfgang W., Reswara, Ghani, Putra, Mileno M., Pratama Lamura, M. Danny, Jamari, J., Bayuseno, Athanasius P. |
| Zdroj: |
Case Studies in Chemical and Environmental Engineering; December 2024, Vol. 10 Issue: 1 |
| Abstrakt: |
A substantial amount of dry solid waste residues in Indonesia produced during the extraction of asphalt-rock bitumen offers the potential for calcium recovery for reducing CO₂ emissions toward value-added carbonate minerals viaindirect mineral carbonation. This study used the residue by crushing and calcining at 900 °C for 5 hours, leached with 2 M HCl and 1 M H2SO4at 60 °C to form a calcium-rich solution, and mixed with NH4HCO3at a pH of 11.2–12 to precipitate calcium carbonate (PCC) at varying 30–70 °C. The PCC product has substantial calcite and small vaterite with spherical morphology, potentially various applications in paper and plastic-making industries. |
| Databáze: |
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