Geochemical evolution of bauxite residue during in situ remediation

Grace Scullett-Dean

doi:10.26182/gvbq-e179

Geochemical evolution of bauxite residue during in situ remediation

Grace Scullett-Dean

Research output: Thesis › Doctoral Thesis

94 Downloads (Pure)

Abstract

Bauxite residue is a highly alkaline and saline tailings material which poses numerous environmental challenges associated with its storage. This thesis investigated novel bioremediation treatments for in situ remediation of bauxite residue at field scale, in combination with commonly used amendments. The use of bioremediated residue as a plant germination and growth medium was also investigated. Trace element geochemistry was explored in detail using synchrotron based analytical techniques. Additionally, the dissolution behaviour of key alkalinity generating minerals in bauxite residue was investigated under conditions relevant to remediation. This project has contributed to improving environmental management practices within the alumina industry.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Barton, Louise, Supervisor Santini, Talitha, Supervisor Saunders, Martin, Supervisor Myers, Lance, Supervisor, External person
Thesis sponsors	Australian Government Research Training Program
Award date	6 Jun 2024
DOIs	https://doi.org/10.26182/gvbq-e179
Publication status	Unpublished - 2023

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10.26182/gvbq-e179

THESIS - DOCTOR OF PHILOSOPHY - SCULLETT-DEAN Grace Danielle - 2023
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1 Article
1 Conference article

Coupling microbial and abiotic amendments accelerates in situ remediation of bauxite residue at field scale
Scullett-Dean, G., Stockwell, K., Myers, L., Nyeboer, H., Moreira-Grez, B. & Santini, T. C., 15 Jun 2023, In: Science of the Total Environment. 877, 162699.
Research output: Contribution to journal › Article › peer-review

Open Access
10 Citations (Scopus)
Accelerating soil formation in bauxite residue: a solution for long-term tailings management and storage
Scullett-Dean, G., Stockwell, K., Myers, L., Nyeboer, H. & Santini, T. C., 2022, In: Proceedings of the International Conference on Mine Closure. 1, p. 1027-1035 9 p.
Research output: Contribution to journal › Conference article › peer-review
2 Citations (Scopus)

Cite this

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title = "Geochemical evolution of bauxite residue during in situ remediation",

abstract = "Bauxite residue is a highly alkaline and saline tailings material which poses numerous environmental challenges associated with its storage. This thesis investigated novel bioremediation treatments for in situ remediation of bauxite residue at field scale, in combination with commonly used amendments. The use of bioremediated residue as a plant germination and growth medium was also investigated. Trace element geochemistry was explored in detail using synchrotron based analytical techniques. Additionally, the dissolution behaviour of key alkalinity generating minerals in bauxite residue was investigated under conditions relevant to remediation. This project has contributed to improving environmental management practices within the alumina industry.",

keywords = "Tailings, bauxite residue, red mud, remediation, trace elements, rehabilitation",

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language = "English",

school = "The University of Western Australia",

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AB - Bauxite residue is a highly alkaline and saline tailings material which poses numerous environmental challenges associated with its storage. This thesis investigated novel bioremediation treatments for in situ remediation of bauxite residue at field scale, in combination with commonly used amendments. The use of bioremediated residue as a plant germination and growth medium was also investigated. Trace element geochemistry was explored in detail using synchrotron based analytical techniques. Additionally, the dissolution behaviour of key alkalinity generating minerals in bauxite residue was investigated under conditions relevant to remediation. This project has contributed to improving environmental management practices within the alumina industry.

KW - Tailings

KW - bauxite residue

KW - red mud

KW - remediation

KW - trace elements

KW - rehabilitation

U2 - 10.26182/gvbq-e179

DO - 10.26182/gvbq-e179

M3 - Doctoral Thesis

ER -

Geochemical evolution of bauxite residue during in situ remediation

Abstract

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Research output

Coupling microbial and abiotic amendments accelerates in situ remediation of bauxite residue at field scale

Accelerating soil formation in bauxite residue: a solution for long-term tailings management and storage

Cite this