Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Chris A. du Plessis"'
Autor:
Ka Yu Cheng, Caroline C. Rubina Acuña, Naomi J. Boxall, Jian Li, David Collinson, Christina Morris, Chris A. du Plessis, Natalia Streltsova, Anna H. Kaksonen
Publikováno v:
Minerals, Vol 11, Iss 8, p 834 (2021)
Bio-oxidation of refractory sulfidic gold minerals has been applied at the commercial scale as a pre-treatment to improve gold yields and reduce chemical consumption during gold cyanidation. In this study, the effect of initial cell concentration on
Externí odkaz:
https://doaj.org/article/cf7d4fd23fdb4cda85040b445151d8df
Autor:
Natalia Streltsova, Christina Morris, Anna H. Kaksonen, Naomi J. Boxall, Caroline Rubina Acuña, Jian Li, D.M. Collinson, Chris A. du Plessis, Ka Yu Cheng
Publikováno v:
Minerals, Vol 11, Iss 834, p 834 (2021)
Minerals
Volume 11
Issue 8
Minerals
Volume 11
Issue 8
Bio-oxidation of refractory sulfidic gold minerals has been applied at the commercial scale as a pre-treatment to improve gold yields and reduce chemical consumption during gold cyanidation. In this study, the effect of initial cell concentration on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c5cf5306a854f23c8c546139f5e9e56
https://www.mdpi.com/2075-163X/11/8/834
https://www.mdpi.com/2075-163X/11/8/834
Autor:
Jason Wylie, Jian Li, Anna H. Kaksonen, Christina Morris, Kayley M. Usher, Felipe Hilario, Chris A. du Plessis
Publikováno v:
Minerals Engineering. 132:258-267
Biological iron oxidation results in both soluble and precipitated ferric iron, dependent on pH conditions, ionic strength and solution chemistry. Soluble ferric iron plays a well-documented role in hydrometallurgical processing. Ferric iron precipit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf82e77f81a75219be36907e9b0b32c5
https://doi.org/10.1016/j.mineng.2018.12.015
https://doi.org/10.1016/j.mineng.2018.12.015
Autor:
Jeff C. Hughes, Chris A. du Plessis
Publikováno v:
Microbiology of Landfill Sites
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8626cdedb039701ccaf27b0911482945
https://doi.org/10.1201/9780367813475-6
https://doi.org/10.1201/9780367813475-6
Autor:
Anna H. Kaksonen, D.M. Collinson, Chris A. du Plessis, David Seaman, Natalia Streltsova, Naomi J. Boxall, Christina Morris, Ka Yu Cheng, Brigitte Seaman, Luke Vollert
Publikováno v:
Hydrometallurgy. 181:189-194
Microbial oxidation of ferrous to ferric iron allows efficient oxidative processing of sulfide minerals under ambient conditions. This study determined the effect of cell concentration of a mixed mesophilic microbial culture on iron oxidation rate, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50b7e21d3baf80be2d8b23ed4a7678dd
https://doi.org/10.1016/j.hydromet.2018.09.008
https://doi.org/10.1016/j.hydromet.2018.09.008
Publikováno v:
Hydrometallurgy. 173:241-249
In this study, the utilization efficiency of two quicklimes and their respective slaked lime slurry (milk of lime) products were evaluated using the precipitation of magnesium sulfate as a model system. Magnesium was selected because of its abundant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4d3f69a8444123fac9a36e936979e56
https://doi.org/10.1016/j.hydromet.2017.09.001
https://doi.org/10.1016/j.hydromet.2017.09.001
Autor:
Felipe Hilario, Anna H. Kaksonen, Chris A. du Plessis, Kayley M. Usher, Jian Li, Jason Wylie, Christina Morris
Publikováno v:
Hydrometallurgy. 168:40-48
This study is the first demonstration of a continuous culture bio-catalysed iron oxidation and jarosite precipitation reactor using thermophilic archaea, for use in hydrometallurgical process flow sheets to oxidize and partially remove iron from solu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1250c8ca59ff9f7dab7a0aa49e7eecaa
https://doi.org/10.1016/j.hydromet.2016.08.015
https://doi.org/10.1016/j.hydromet.2016.08.015
Autor:
Anna H. Kaksonen, Jason Wylie, Christina Morris, Kayley M. Usher, Felipe Hilario, Jian Li, Chris Andre Du Plessis
Publikováno v:
Advanced Materials Research. 1130:230-233
This study is the first demonstration of a continuous culture bio-catalysed iron oxidation and jarosite precipitation reactor using thermophilic archea, for use in hydrometallurgical process flow sheets. A two-stage continuous stirred tank reactor (C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2ebb7c2c7c4f188778c30781af4453d
https://doi.org/10.4028/www.scientific.net/amr.1130.230
https://doi.org/10.4028/www.scientific.net/amr.1130.230
Autor:
Chris A. du Plessis, D. Barrie Johnson
Publikováno v:
Minerals Engineering. 75:2-5
Biomining, as traditionally practised, uses aerobic, acidophilic microorganisms to accelerate the oxidative dissolution of sulfide minerals present in ores and concentrates, thereby either causing target metals to be solubilised (e.g. copper) or made
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ff54bbcbf14a44cce2c2282e01f8afe
https://doi.org/10.1016/j.mineng.2014.09.024
https://doi.org/10.1016/j.mineng.2014.09.024
Autor:
Christina Morris, Anna H. Kaksonen, Chris A. du Plessis, Kayley M. Usher, Jason Wylie, Maneesha P. Ginige, Jian Li, Ka Yu Cheng, Felipe Hilario, Suzy Rea
Publikováno v:
Hydrometallurgy. 150:227-235
Continuous iron oxidation and removal of jarosite precipitates from solution at low pH, ambient temperature and pressure was successfully demonstrated with a two-stage airlift bioreactor (ALBR) system. The ALBR system, comprising of two ALBRs, each w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::152912e0ec3f3bb998ae092704399721
https://doi.org/10.1016/j.hydromet.2014.05.020
https://doi.org/10.1016/j.hydromet.2014.05.020