Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Helen R. Watling"'
Publikováno v:
Microorganisms, Vol 3, Iss 3, Pp 364-390 (2015)
In heap bioleaching, acidophilic extremophiles contribute to enhanced metal extraction from mineral sulphides through the oxidation of Fe(II) and/or reduced inorganic sulphur compounds (RISC), such as elemental sulphur or mineral sulphides, or the de
Externí odkaz:
https://doaj.org/article/0294f72b40e044bdbd103c5480fd07ec
Publikováno v:
Solid State Phenomena. 262:233-236
In this study, a dynamically-controlled column was used to evaluate two ores known to cause heap overheating. This enabled the simulation of heap self-heating under controlled conditions. The lixiviant was inoculated with a consortia of mesophilic an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e8f9c507d62c636de242cd07bc2e4bf
https://doi.org/10.4028/www.scientific.net/ssp.262.233
https://doi.org/10.4028/www.scientific.net/ssp.262.233
Leaching of chalcopyrite (CuFeS2) with an imidazolium-based ionic liquid in the presence of chloride
Publikováno v:
Minerals Engineering. 99:60-66
The effects of independent variables such as, temperature, concentration of ionic liquid (1-butyl-3-methyl-imidazolium hydrogen sulphate, [bmim][HSO 4 ]), chloride and sulphuric acid on copper extraction from chalcopyrite (CuFeS 2 ) ore were studied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9960b67effd38949db3d6b18191907e
https://doi.org/10.1016/j.mineng.2016.09.016
https://doi.org/10.1016/j.mineng.2016.09.016
Autor:
Helen R. Watling, Peter D. Franzmann, J.J. Johnson, Peter D. Nichols, John A. E. Gibson, D.W. Shiers, Jason J. Plumb
Publikováno v:
Hydrometallurgy. 164:189-201
The effect of increasing temperature from 30 to 60 °C on iron (II)-oxidation activity and microbial population development in columns was investigated. With respect to ‘mode of inoculation’, pre-inoculation of the ore with a mixed culture result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::beba6bdef5ae30f5a399055e749eb6c4
https://doi.org/10.1016/j.hydromet.2016.05.017
https://doi.org/10.1016/j.hydromet.2016.05.017
Publikováno v:
Research in Microbiology. 167:576-586
Industrial heap leaching of low grade mineral sulfide ores is catalysed by the use of acidophilic microorganisms. These microorganisms obtain energy for growth from the oxidation of reduced inorganic or organic compounds, including soluble ferrous io
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2eab0c0b4ddfa907f4174b11194aab8c
https://doi.org/10.1016/j.resmic.2016.05.007
https://doi.org/10.1016/j.resmic.2016.05.007
Publikováno v:
Minerals Engineering. 85:55-65
Three oxidants, hypochlorous acid, chlorate and nitrate, were assessed for their ability to oxidise chalcopyrite (CuFeS2). Hypochlorous acid was the most aggressive oxidant trialled, with copper extraction reaching a plateau after 1–5 h. Extraction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b32d62ddde797cbd43228cd903875c9
https://doi.org/10.1016/j.mineng.2015.10.019
https://doi.org/10.1016/j.mineng.2015.10.019
Publikováno v:
Advanced Materials Research. 1130:218-221
Strains ofSulfobacillus (S.)andAlicyclobacillusspecies have been identified/detected in managed bioleaching heaps and agitated tanks using culture-dependent and culture-independent methods.S thermosulfidooxidansoxidises both iron(II) and reduced inor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8719445195926933c470d5540528944f
https://doi.org/10.4028/www.scientific.net/amr.1130.218
https://doi.org/10.4028/www.scientific.net/amr.1130.218
Autor:
Helen R. Watling, D.W. Shiers, Anna H. Kaksonen, Elizabeth Watkin, D.M. Collinson, Melissa K. Corbett
Publikováno v:
Advanced Materials Research. 1130:205-208
The chloride tolerance of three Fe (II)- and sulfur-oxidising thermophiles and the effect of chloride on metals extraction from mineral sulfides were studied. Initially, 10-day bioleaching tests (60 °C) were conducted using pyrite (FeS2), chalcopyri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbba4737ce4d429bfcb6136b27c85a9a
https://doi.org/10.4028/www.scientific.net/amr.1130.205
https://doi.org/10.4028/www.scientific.net/amr.1130.205
Publikováno v:
Advanced Materials Research. 1130:308-311
As Alicyclobacillus-like strain FP1 was isolated from copper heap process water (pH 1.5), this research was directed towards its bioleaching attributes, specifically ferrous ion (Fe (II)) and reduced inorganic sulfur compound (RISC) oxidation, and bi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6b4331167966cc5bb96015a4941b7ff
https://doi.org/10.4028/www.scientific.net/amr.1130.308
https://doi.org/10.4028/www.scientific.net/amr.1130.308
Publikováno v:
Minerals Engineering. 71:139-145
Due to the scarcity of water in the north of Chile, there is interest in small-scale mining using seawater to leach the minerals. This situation has led to this research aimed to determine the effect of different process variables on the extraction o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a66eaee952454399f35d85ef7bd12752
https://doi.org/10.1016/j.mineng.2014.11.008
https://doi.org/10.1016/j.mineng.2014.11.008