Zobrazeno 1 - 10
of 29
pro vyhledávání: '"G. S. Hansford"'
Publikováno v:
AIChE Journal. 58:2428-2440
A dynamic analysis of chalcopyrite bioleaching was performed in continuous flow systems. In contrast to a previous batch analysis1 in which the influence of particle surface area on reaction rate was not accounted for, the unsteady-state change in pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a9824565f76c5e607e2a2bd7af1c7de
https://doi.org/10.1002/aic.12753
https://doi.org/10.1002/aic.12753
Publikováno v:
AIChE Journal. 56:2650-2661
A study was undertaken to investigate the dynamics of chalcopyrite bioleaching. The analysis revealed significant dynamics features because the chemical leaching rate of chalcopyrite does not vary monotonically with solution redox potential but under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb9f842e78e7d7189400abde12fe6fbb
https://doi.org/10.1002/aic.12183
https://doi.org/10.1002/aic.12183
Publikováno v:
Biochemical Engineering Journal
A typical bioleach heap is characterized by wide variation of temperature across the heap bed, leading to oxidation of target minerals occurring at different rates. Previous studies on the effect of temperature on the microbial oxidation of ferrous-i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c4b4b9662f2a1f24aa15ef30ca0d2c6
https://doi.org/10.1016/j.bej.2009.05.001
https://doi.org/10.1016/j.bej.2009.05.001
Publikováno v:
AIChE Journal. 54:1592-1599
Published models apply particle size to predict bioleaching reactor performance. In this study mathematical models predicting the overall reaction rate of a bioleach reactor system are developed to establish which particle parameters are necessary to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa9aaf1638160f9d18782e39904ba7ca
https://doi.org/10.1002/aic.11479
https://doi.org/10.1002/aic.11479
Publikováno v:
Advanced Materials Research. :156-159
In heap bioleaching the dissolution of gangue minerals from igneous ore materials can lead to the build-up of considerable concentrations of Mg and Al sulphates in the recycled leach solution. This may interfere with microbial ferrous iron oxidation,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3c97395f8ea1e60565ebc383774b101
https://doi.org/10.4028/www.scientific.net/amr.20-21.156
https://doi.org/10.4028/www.scientific.net/amr.20-21.156
Publikováno v:
Hydrometallurgy
In view of the fact that the microbial oxidation of ferrous iron to the ferric form is an essential sub-process in the bioleaching of sulphide minerals, the development of a comprehensive rate equation for this sub-process is critical. Such a rate eq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a1826dac00bb2d5450c1da7a7a49571
https://doi.org/10.1016/j.hydromet.2006.03.033
https://doi.org/10.1016/j.hydromet.2006.03.033
Publikováno v:
Biochemical Engineering Journal. 16:337-346
The aim of this work was to determine whether or not the variable maintenance equation proposed by Neijssel and Tempest [Arch. Microbiol. 107 (1976) 215] and modified by Pirt [Arch. Microbiol. 133 (1982) 300] could explain the differences in the expe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f07831033a6ccd2b576f7bebfb12219d
https://doi.org/10.1016/s1369-703x(03)00113-x
https://doi.org/10.1016/s1369-703x(03)00113-x
Publikováno v:
Biotechnology and Bioengineering. 65:44-53
The ferrous-iron oxidation kinetics of a bacterial culture consisting predominantly of Leptospirillum ferrooxidans were studied in continuous-flow bioreactors. The bacterial culture was fed with a salts solution containing 12 g/L ferrous-iron, at dil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba87c134addeaabf70e18aa819b5211b
https://doi.org/10.1002/(sici)1097-0290(19991005)65:1<44::aid-bit6>3.0.co
https://doi.org/10.1002/(sici)1097-0290(19991005)65:1<44::aid-bit6>3.0.co
Autor:
A. W. Breed, G. S. Hansford
Publikováno v:
Biotechnology and Bioengineering. 64:671-677
The results of recent research have shown that the bioleaching of sulfide minerals occurs via a two-step mechanism. In this mechanism, the sulfide mineral is chemically oxidized by the ferric-iron in the bioleaching liquor. The ferrous-iron produced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14065eeb274fbdb36aa0bddcdbbdda6e
https://doi.org/10.1002/(sici)1097-0290(19990920)64:6<671::aid-bit5>3.0.co
https://doi.org/10.1002/(sici)1097-0290(19990920)64:6<671::aid-bit5>3.0.co
Publikováno v:
Hydrometallurgy. 53:57-72
The question whether the overall bacterial oxidation rate of a pyrite is determined by both the chemical reactivity of the pyrite as well as the affinity of a bacterial strain to the ferrous to ferric iron ratio, was examined. Bioleaching studies wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c3ac085e522c2770de3663866e579ea
https://doi.org/10.1016/s0304-386x(99)00037-7
https://doi.org/10.1016/s0304-386x(99)00037-7