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Simon C. Apte
Commonwealth Scientific and Industrial Research Organisation
Environmental chemistryChemistrySedimentCopperBiology
86Publications
31H-index
4,410Citations
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Publications 88
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Here, we experimentally expand understanding of the reactions and enzymes involved in Acidithiobacillus thiooxidans ATCC 19377 S(0) and S 2 O 3 2 - metabolism by developing models that integrate gene expression analyzed by RNA-Seq, solution sulfur speciation, electron microscopy and spectroscopy. The A. thiooxidans S 2 O 3 2 - metabolism model involves the conversion of S 2 O 3 2 - to SO 4 2 - , S(0) and S 4 O 6 2 - , mediated by the sulfur oxidase complex (Sox), tetrathionate hydrolase (TetH), ...
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#1Y. T. John Kwong (NRCan: Natural Resources Canada)
#2Simon C. Apte (CSIRO: Commonwealth Scientific and Industrial Research Organisation)H-Index: 31
Last. Elisabetta B. Morello (National Research Council)H-Index: 6
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With increasing metal prices and declining ore grades, new mines are getting larger and mine waste disposal and management have become more difficult, particularly from an environmental perspective. While technologies keep on improving, the available space for terrestrial mine waste disposal is limited. Thus, several coastal countries still consider deep-sea tailings placement (DSTP) as a viable option. This brief review compares the environmental impacts of DSTP versus on-land disposal and sugg...
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#1Kelly Whaley-Martin (U of T: University of Toronto)H-Index: 1
#2Gerdhard L. Jessen (U of T: University of Toronto)H-Index: 1
Last. Lesley A. Warren (U of T: University of Toronto)H-Index: 18
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The biogeochemistry of acid mine drainage (AMD) derived from waste rock associated sulphide mineral oxidation is relatively well characterized and linked to Acidithiobacillus spp.. However, little is understood about the microbial communities and sulphur cycling before AMD develops, key component on its prevention. This study aimed to examine circum-neutral mining impacted water (MIW) communities and its laboratory enrichments for sulphur oxidizing bacteria (SoxBac). MIW in situ microbial commun...
3 CitationsSource
#1Shelby V. Butz (USC: University of South Carolina)
#2James L. Pinckney (USC: University of South Carolina)H-Index: 5
Last. Jamie R. Lead (USC: University of South Carolina)H-Index: 49
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Abstract Silver nanoparticles (AgNPs) are widely used and have been shown to have relatively high inherent toxicity to a range of living organisms including fish, annelids, daphnia and algae. AgNPs capped with either citrate (cit-AgNPs) or polyvinylpyrrolidone (PVP; PVP-AgNPs) were exposed to the estuarine dinoflagellate Prorocentrum minimum at a range of concentrations (1–1000 μg L−1). Transformations of the AgNPs (e.g. dissolution), along with their uptake and biological effects were measured....
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#1Jane Waterhouse (JCU: James Cook University)H-Index: 15
#2Simon C. Apte (CSIRO: Commonwealth Scientific and Industrial Research Organisation)H-Index: 31
Last. Nicole Murphy (CSIRO: Commonwealth Scientific and Industrial Research Organisation)H-Index: 2
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#1Dirk Mallants (CSIRO: Commonwealth Scientific and Industrial Research Organisation)H-Index: 30
#2Robert G. Jeffrey (UOW: University of Wollongong)H-Index: 23
Last. Bruce GrayH-Index: 1
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Abstract Coal seam gas (CSG) or coal bed methane production has grown exponentially in Australia over the last two decades with currently nearly 7000 productive wells and another 18,750 wells planned over the next five to ten years. To address concerns over environmental contamination by hydraulic fracture fluids (HFF) attributed to (i) incidents involving poor surface handling of HFF and other fluids with potential migration pathways in soil and shallow groundwater, and (ii) leakage pathways ar...
1 CitationsSource
Barium is present at elevated concentrations in oil and gas produced waters, and there is no international water quality guideline value to assess the potential risk of adverse effects to aquatic biota. Sulfate concentration largely controls the solubility of barium in aquatic systems, with insoluble barium sulfate (barite) assumed to be less bioavailable and less toxic than dissolved barium. We exposed aquatic biota to dissolved barium only and to a mixture of dissolved and precipitated barium....
1 CitationsSource
#1Simon C. ApteH-Index: 31
#2Mike WilliamsH-Index: 14
Last. Chad V. JarolimekH-Index: 11
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#1Lisa A. GoldingH-Index: 9
#2Merrin S. AdamsH-Index: 15
Last. Kitty McKnightH-Index: 1
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