Amending highly acidic blowdown sludge by direct addition of beneficiated alumina refinery residue
Article
Article Title | Amending highly acidic blowdown sludge by direct addition of beneficiated alumina refinery residue |
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Article Category | Article |
Authors | |
Author | Fergusson, Lee |
Journal Title | International Journal of Multidisciplinary Research and Development |
Journal Citation | 2 (3), pp. 616-624 |
Number of Pages | 9 |
Year | 2015 |
Place of Publication | Delhi, India |
Web Address (URL) | http://www.allsubjectjournal.com/archives/2015/vol2/issue3 |
Abstract | This paper examines the relationship between sulfuric acid plant blowdown sludge and alumina refinery residue. Specifically, the research focuses on the neutralization of high levels of acidity in blowdown sludge (i.e., pH <1.0) and the reduction of leachable mercury (average 17.0 mg/L), a major contaminant in this type of industrial sludge at >19,000 mg/kg or 1.9%, using a modified form of alumina refinery residue, also called bauxite residue. Ten experiments on three different types of blowdown sludge were carried out to determine the potential role beneficiated alumina refinery residue might play in neutralizing acid and sequestering leachable mercury into non-bioavailable forms. Results from the study indicate that while all ten treatments either partially or completely neutralized |
Keywords | acidity, mercury, blowdown sludge, sulfuric acid plant, alumina refinery residue |
ANZSRC Field of Research 2020 | 410405. Environmental rehabilitation and restoration |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Prana World Consulting, Australia |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4wqz/amending-highly-acidic-blowdown-sludge-by-direct-addition-of-beneficiated-alumina-refinery-residue
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