Dynamics of the Geochemistry, Mineralogy and Microbial Ecology in Bayer-Sinter Bauxite Residue Rehabilitation driven by the Microbial Metabolism of Organic Matter

Alex Chiu

Research output: ThesisMaster's Thesis

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Abstract

Amelioration of Bayer-sinter bauxite residue (BSBR) is a prerequisite for the establishment of direct revegetation for the rehabilitation of a BSBR storage facility. A glasshouse study was conducted to elucidate the dynamics of the biogeochemistry of BSBR during rehabilitation. Addition of microbial inocula and organic matter to BSBR significantly lowered the pH and EC and restored a diverse microbial community in the BSBR in 30 days. Calcium mineral dissolution was observed and correlated with the dealkalization and desalination of BSBR. These promising results demonstrated the feasibility of such rehabilitation strategies for BSBR.
Original languageEnglish
QualificationMasters
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Burton, Michael, Supervisor
  • Gleeson, Deirdre, Supervisor
  • Leopold, Matthias, Supervisor
Thesis sponsors
Award date15 Dec 2021
DOIs
Publication statusUnpublished - 2021

Embargo information

  • Embargoed from 16/12/2021 to 16/12/2023. Made publicly available on 16/12/2023.

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