Nabilah Aminah Lutpi, John Zhu
Red mud is a by-product in alumina refineries that are verified as hazardous and caustic due to the high pH of 10-13. An incentive to treat the red mud residue was applied in this study by utilizing it as an economical adsorbent for the removal of CO2 emissions. The study was conducted using a laboratory-scale reactor to investigate the batch absorption of CO2 gas with red mud samples from Worsley Alumina Pty. Ltd., Western Australia. There were two parts to the experiments. The first part focused on alkalinity studies, determining the intensity of carbonate and hydroxide ions presence in the red mud. The second part involved batch absorption studies which assessed the effectiveness of CO2 in neutralizing the red mud. Findings indicated that hydroxide and carbonate ions are consumed at specific pH levels, with hydroxide generally present at pH greater than 8.3 and carbonate between 4.5 and 8.3. The batch absorption analyses revealed that longer times are required for CO2 to neutralize the red mud samples at larger dosages.
@article{a87aea79-5285-40fd-b375-817ad3562a88,
title={Carbonation of Bauxite Residue A Solutio},
author={Nabilah Aminah Lutpi and John Zhu},
year={2026},
language={en}
}TY - JOUR TI - Carbonation of Bauxite Residue A Solutio AU - Nabilah Aminah Lutpi AU - John Zhu PY - 2026 LA - en ER -
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