ORCID Profile
0000-0002-2980-1798
Current Organisation
University of Queensland
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Geochronology And Isotope Geochemistry | Geochemistry | Chemical Engineering | Petroleum and Reservoir Engineering | Geology | Chemical Engineering Not Elsewhere Classified | Climatology (Incl. Palaeoclimatology) | Surfacewater Hydrology | Petroleum And Reservoir Engineering | Petroleum and Coal Geology | Geochronology | Engineering And Technology Not Elsewhere Classified | Environmental Science and Management | Powder and Particle Technology | Soil Chemistry | Environmental Technologies | Environmental Management And Rehabilitation | Archaeological Science | Geotectonics | Ore Deposit Petrology | Genomics | Geomechanics | Environmental Engineering not elsewhere classified | Chemical Engineering not elsewhere classified | Resources Engineering and Extractive Metallurgy | Interdisciplinary Engineering Not Elsewhere Classified | Geology Not Elsewhere Classified |
Earth sciences | Oil and Gas Extraction | Coal | Oil and gas | Climate change | Renewable Energy not elsewhere classified | Renewable energy | Land and water management | Scientific instrumentation | Climate variability | Primary mining and extraction processes | Geothermal Energy Extraction | Exploration | Other
Publisher: Elsevier BV
Date: 2001
Publisher: Society of Economic Geologists
Date: 09-2006
Publisher: Springer Netherlands
Date: 29-07-2010
Publisher: Elsevier BV
Date: 30-07-2008
Publisher: Elsevier BV
Date: 02-2020
Publisher: Springer Netherlands
Date: 29-07-2010
Publisher: Informa UK Limited
Date: 02-1996
Publisher: Elsevier BV
Date: 07-2002
Publisher: Elsevier BV
Date: 03-2007
Publisher: Elsevier BV
Date: 2015
Publisher: Springer Science and Business Media LLC
Date: 1992
Publisher: Elsevier BV
Date: 05-2022
Publisher: Springer International Publishing
Date: 2017
Publisher: Geological Society of London
Date: 2011
DOI: 10.1144/SP359.13
Publisher: Elsevier BV
Date: 2023
Publisher: Elsevier BV
Date: 2016
Publisher: Elsevier BV
Date: 05-2020
Publisher: Elsevier BV
Date: 2023
Publisher: Elsevier BV
Date: 06-2014
Publisher: Informa UK Limited
Date: 12-2018
Publisher: Springer Science and Business Media LLC
Date: 09-2014
Publisher: Informa UK Limited
Date: 06-2008
Publisher: Elsevier BV
Date: 02-2015
Publisher: Elsevier BV
Date: 2018
Publisher: Elsevier BV
Date: 12-2002
Publisher: Society of Economic Geologists
Date: 09-2006
Publisher: Springer Science and Business Media LLC
Date: 04-10-2016
Publisher: Elsevier BV
Date: 2013
Publisher: Elsevier BV
Date: 05-2016
Publisher: EDP Sciences
Date: 2019
DOI: 10.1051/E3SCONF/20199804007
Abstract: The geologic storage of CO 2 carries both physical and chemical risks to the environment. In order to reduce those risks, it is necessary to provide predictive capabilities for impacts so that strategies can be developed to monitor, identify and mitigate potential problems. One area of concern is related to water quality both in the reservoir and in overlying aquifers. In this study we report the critical steps required to develop chemically constrained reactive transport models (RTM) that can be used to address risk assessment associated with water quality. The data required to produce the RTM includes identifying the in idual hydrostratigraphic units and defining the mineral and chemical composition to sufficient detail for the modelling. This includes detailed mineralogy, bulk chemical composition, reactive mineral phase chemical composition and the identification of the occurrence and mechanisms of mobilisation of any trace elements of interest. Once the required detail is achieved the next step involves conducting experiments to determine the evolution of water chemistry as reaction proceeds preferably under varying elevated CO 2 fugacities with and without impurities. Geochemical modelling of the experiments is then used for characterising the reaction pathways of the different hydrostratigraphic units. The resultant geochemical model inputs can then be used to develop the chemical components of a reactive transport model.
Publisher: Elsevier BV
Date: 2001
Publisher: Elsevier BV
Date: 2022
Publisher: Elsevier BV
Date: 07-2014
Publisher: Elsevier BV
Date: 12-2016
Publisher: Society of Economic Geologists
Date: 09-1999
Publisher: Elsevier BV
Date: 06-2017
Publisher: American Association for the Advancement of Science (AAAS)
Date: 23-10-2015
Abstract: The production and consumption of methane by microorganisms play a major role in the global carbon cycle. Although these processes can occur in a range of environments, from animal guts to the deep ocean, these metabolisms are confined to the Archaea. Evans et al. used metagenomics to assemble two nearly complete archaeal genomes from deep groundwater methanogens (see the Perspective by Lloyd). The two reconstructed genomes are members of the recently described Bathyarchaeota and not the phylum to which all previously known methane-metabolizing archaea belonged. Science , this issue p. 434 , see also p. 384
Publisher: Springer Netherlands
Date: 29-07-2010
Publisher: Geological Society of America
Date: 23-05-2012
DOI: 10.1130/G32977.1
Publisher: MDPI AG
Date: 08-03-2021
DOI: 10.3390/GEOSCIENCES11030123
Abstract: Carbon dioxide (CO2) geological storage traditionally involves capturing a CO2 stream from a point source such as a power station or from cement, steel, or natural gas processing plant, transporting it and compressing it, prior to injection as a supercritical phase into a suitable geological reservoir overlain by a cap-rock or seal. One of the main perceived risks in CO2 geological storage is migration or leakage of the buoyant CO2 stream through the seal, via faults or fractures, or other migration out of the storage complex. Injection of CO2 dissolved in water may be one solution to mitigate the leakage risk. This approach could take advantage of large volumes of wastewater already being reinjected into saline aquifers worldwide but particularly in North America, thus reducing costs. This study examines the potential to “piggyback” off the existing wastewater injection industry as a novel carbon storage option.
Publisher: Elsevier BV
Date: 06-2010
Publisher: Elsevier BV
Date: 2001
DOI: 10.1016/S0899-9007(00)00473-1
Abstract: Estimation of total body water by measuring bioelectrical impedance at a fixed frequency of 50 kHz is useful in assessing body composition in healthy populations. However, in cirrhosis, the distribution of total body water between the extracellular and intracellular compartments is of greater clinical importance. We report an evaluation of a new multiple-frequency bioelectrical-impedance analysis technique (MFBIA) that may quantify the distribution of total body water in cirrhosis. In 21 cirrhotic patients and 21 healthy control subjects, impedance to the flow of current was measured at frequencies ranging from 4 to 1012 kHz. These measurements were used to estimate body water compartments and then compared with total body water and extracellular water determined by isotope methodology. In cirrhotic patients, extracellular water and total body water (as determined by isotope methods) were well predicted by MFBIA (r = 0.73 and 0.89, respectively). However, the 95% confidence intervals of the limits of agreement between MFBIA and the isotope methods were +/-14% and +/-9% for cirrhotics (extracellular water and total body water, respectively) and +/-9% and +/-9% for cirrhotics without ascites. The 95% confidence intervals estimated from the control group were +/-10% and +/-5% for extracellular water and total body water, respectively. Thus, despite strong correlations between MFBIA and isotope measurements, the relatively large limits of agreement with accepted techniques suggest that the MFBIA technique requires further refinement before it can be routinely used to determine the nutritional assessment of in idual cirrhotic patients.
Publisher: Elsevier BV
Date: 06-1994
DOI: 10.1016/0016-5085(94)90418-9
Abstract: Previous studies of body composition in cirrhosis have either measured only one body compartment, used alcoholic subjects, or not corrected body composition for physical characteristics. The aim of this study was to perform a detailed analysis of body composition in subjects with nonalcoholic cirrhosis. Simultaneous measurements of total body potassium and total body water were performed and values of body cell mass and body fat were corrected for physical characteristics. Child's class C patients had a significantly lower mean total body potassium index (i.e., percent observed value/expected value) and body fat index than class A or B patients. Eighty-one percent of class C patients had simultaneous reductions in body fat and body cell mass, and 71% of patients with class A disease had a significant reduction in either or both compartments. Nine patients showed the pattern of tissue loss seen with short-term starvation. Fourteen patients showed the pattern of tissue loss seen in physiological stress. Severe liver disease is characterized by significant reductions in body fat and body cell mass, most class A patients have a significant reduction in some nutritional compartments, and the pattern of tissue loss may reflect mechanisms of tissue wasting.
Publisher: Frontiers Media SA
Date: 14-07-2022
DOI: 10.3389/FENRG.2022.873813
Abstract: CO 2 geological storage will be needed as part of the transition to lower greenhouse gas emissions. During CO 2 storage, the mobilization of metals from minerals to formation water via CO 2 water rock reactions may be a concern for water quality. The sources, behavior, and fate of metals, however, are not well understood. Metals in minerals of calcite cemented sandstone, feldspar-rich sandstone, and ironstone seal drill cores from a target storage site were characterized. The cores were reacted with low-salinity water and pure supercritical CO 2 or impure CO 2 with SO 2 and nitric oxide (NO), under reservoir conditions. Calcite cemented core underwent calcite dissolution with chlorite, plagioclase, and sulfide alteration. The highest concentrations of calcium and manganese were released in the reaction of calcite cemented sandstone seal, with the lowest mobilized arsenic concentration. Pure CO 2 reaction of the feldspar-rich sandstone seal resulted in calcite dissolution, with plagioclase, chlorite, kaolinite, illite, and sulfides corroded. Impure CO 2 reaction of the feldspar-rich sandstone led to additional corrosion of apatite, pyrite, and sphalerite cements. Generally, dissolved iron, lead, zinc, and arsenic were released and then re-precipitated in oxide minerals or adsorbed. Calcium, manganese, and strontium were released primarily from calcite cement dissolution. Plagioclase corrosion was a second source of dissolved strontium, and chlorite dissolution a second source of manganese. Although sulfides contained higher concentrations of metals, the higher reactivity of carbonates meant that the latter were the main sources contributing to dissolved metal concentrations. The mineral content of the seal cores, and the injected gas mixture, had an impact on the type and concentration of metals released. The ubiquitous presence of carbonate minerals means that this study is applicable to understanding the potential risk factors for water quality changes, and the mobilization and fate of environmentally regulated metals, in both CO 2 storage complexes and overlying drinking water aquifers worldwide.
Publisher: Society of Petroleum Engineers (SPE)
Date: 20-12-2007
DOI: 10.2118/93101-PA
Abstract: The recent advances in numerical simulation for primary coalbed methane (CBM) recovery and enhanced coalbed-methane recovery (ECBMR) processes are reviewed, primarily focusing on the progress that has occurred since the late 1980s. Two major issues regarding the numerical modeling will be discussed in this review: first, multicomponent gas transport in in-situ bulk coal and, second, changes of coal properties during methane (CH4) production. For the former issues, a detailed review of more recent advances in modeling gas and water transport within a coal matrix is presented. Further, various factors influencing gas diffusion through the coal matrix will be highlighted as well, such as pore structure, concentration and pressure, and water effects. An ongoing bottleneck for evaluating total mass transport rate is developing a reasonable representation of multiscale pore space that considers coal type and rank. Moreover, few efforts have been concerned with modeling water-flow behavior in the coal matrix and its effects on CH4 production and on the exchange of carbon dioxide (CO2) and CH4. As for the second issue, theoretical coupled fluid-flow and geomechanical models have been proposed to describe the evolution of pore structure during CH4 production, instead of traditional empirical equations. However, there is currently no effective coupled model for engineering applications. Finally, perspectives on developing suitable simulation models for CBM production and for predicting CO2-sequestration ECBMR are suggested.
Publisher: Elsevier BV
Date: 1998
Publisher: Informa UK Limited
Date: 03-04-2014
Publisher: Springer Netherlands
Date: 2011
Publisher: Elsevier BV
Date: 10-2014
Publisher: Elsevier BV
Date: 03-2012
Publisher: Society of Economic Geologists
Date: 04-1990
Publisher: Wiley
Date: 02-04-2004
Publisher: Elsevier BV
Date: 12-2013
Publisher: Elsevier BV
Date: 04-2005
Publisher: Wiley
Date: 20-07-2006
Publisher: Society of Economic Geologists
Date: 05-1983
Publisher: Elsevier BV
Date: 2017
Publisher: Mineralogical Society
Date: 04-2002
Publisher: Elsevier BV
Date: 10-2017
Publisher: American Chemical Society (ACS)
Date: 11-01-2012
DOI: 10.1021/EF201360B
Publisher: Geological Society of America
Date: 2002
Publisher: MDPI AG
Date: 18-02-2020
DOI: 10.3390/GEOSCIENCES10020074
Abstract: This paper uses hydrochemical and multi-isotope analysis to investigate geological controls on coal seam gas (CSG) saturation domains and gas well production performance in a high-rank (vitrinite reflectance (Rv) 1.1) CSG field in the north-western Bowen Basin, Australia. New hydrochemical and stable isotope data were combined with existing geochemical datasets to refine hypotheses on the distribution and origins of CSG in two highly compartmentalized Permian coal seams. Stable isotopic results suggest that geographic variations in gas content, saturation and production reflect the extent of secondary microbial gas generation and retention as a function of hydrodynamics. δ13C and δ2H data support a gas mixing hypothesis with δ13C-CH4 increasing from secondary biogenic values to thermogenic values at depth (δ13C −62.2‰ to −46.3‰), whereas correlated methane and carbon dioxide carbon isotope compositions, Δ13C(CO2–CH4) values and δ13CDIC/alkalinity trends are largely consistent with microbial CO2 reduction. In addition, below 200 m, the majority of δ13C-CO2 values are positive (δ13C: −1.2‰ to 7.1‰) and δ13CDIC shows an erratic increase with depth for both seams that is characteristic of evolution via microbial activity. The progression of carbon isotope values along the CO2 reduction fractionation line suggests progressive depletion of the CO2 reservoir with increasing depth. Faults clearly segment coal seams into areas having significantly different production, with results of geochemical analysis suggesting that pooling of biogenic gas and waters and enhanced methanogenesis occur north of a faulted hinge zone.
Publisher: Elsevier BV
Date: 03-1994
Publisher: Springer Science and Business Media LLC
Date: 27-11-2014
Publisher: Elsevier BV
Date: 05-2023
Publisher: Elsevier BV
Date: 04-2015
Publisher: Springer Netherlands
Date: 2011
Publisher: Society of Economic Geologists
Date: 02-1991
Publisher: Elsevier BV
Date: 10-2011
Publisher: Informa UK Limited
Date: 08-2008
Publisher: Informa UK Limited
Date: 06-1989
Publisher: Elsevier BV
Date: 11-2012
Publisher: Elsevier BV
Date: 07-2018
Publisher: Geological Society of America
Date: 07-2012
DOI: 10.1130/G32970.1
Publisher: Society of Economic Geologists
Date: 08-2005
Publisher: Informa UK Limited
Date: 04-1998
Publisher: Elsevier BV
Date: 03-2022
Publisher: Elsevier BV
Date: 02-2019
Publisher: Elsevier BV
Date: 30-05-2007
Publisher: Wiley
Date: 09-1993
Publisher: Elsevier BV
Date: 08-2006
Publisher: Elsevier BV
Date: 2015
Publisher: Wiley
Date: 06-11-2016
DOI: 10.1111/GBI.12166
Abstract: The microbial communities present in two underground coal mines in the Bowen Basin, Queensland, Australia, were investigated to deduce the effect of pumping and mining on subsurface methanogens and methanotrophs. The micro-organisms in pumped water from the actively mined areas, as well as, pre- and post-mining formation waters were analyzed using 16S rRNA gene licon sequencing. The methane stable isotope composition of Bowen Basin coal seam indicates that methanogenesis has occurred in the geological past. More recently at the mine site, changing groundwater flow dynamics and the introduction of oxygen in the subsurface has increased microbial biomass and ersity. Consistent with microbial communities found in other coal seam environments, pumped coal mine waters from the subsurface were dominated by bacteria belonging to the genera Pseudomonas and the family Rhodocyclaceae. These environments and bacterial communities supported a methanogen population, including Methanobacteriaceae, Methanococcaceae and Methanosaeta. However, one of the most ubiquitous micro-organisms in anoxic coal mine waters belonged to the family 'Candidatus Methanoperedenaceae'. As the Archaeal family 'Candidatus Methanoperedenaceae' has not been extensively defined, the one studied species in the family is capable of anaerobic methane oxidation coupled to nitrate reduction. This introduces the possibility that a methane cycle between archaeal methanogenesis and methanotrophy may exist in the anoxic waters of the coal seam after hydrogeological disturbance.
Publisher: Elsevier BV
Date: 2015
Publisher: Springer Science and Business Media LLC
Date: 12-11-2019
DOI: 10.1038/S41598-019-52863-6
Abstract: The end of the Late Palaeozoic Ice Age (LPIA) ushered in a period of significant change in Earth’s carbon cycle, demonstrated by the widespread occurrence of coals worldwide. In this study, we present stratigraphically constrained organic stable carbon isotope (δ 13 C org ) data for Early Permian coals (312 vitrain s les) from the Moatize Basin, Mozambique, which record the transition from global icehouse to greenhouse conditions. These coals exhibit a three-stage evolution in atmospheric δ 13 C from the Artinskian to the Kungurian. Early Kungurian coals effectively record the presence of the short-lived Kungurian Carbon Isotopic Excursion (KCIE), associated with the proposed rapid release of methane clathrates during deglaciation at the terminus of the Late Palaeozoic Ice Age (LPIA), with no observed disruption to peat-forming and terrestrial plant communities. δ 13 C org variations in coals from the Moatize Basin are cyclic in nature on the order of 10 3 –10 5 years and reflect changes in δ 13 C org of ~±1‰ during periods of stable peat accumulation, supporting observations from Palaeozoic coals elsewhere. These cyclic variations express palaeoenvironmental factors constraining peat growth and deposition, associated with changes in base level. This study also demonstrates the effectiveness of vitrain in coal as a geochemical tool for recording global atmospheric change during the Late Palaeozoic.
Publisher: Wiley
Date: 29-10-2007
DOI: 10.1002/AIC.11314
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 06-1993
Publisher: Elsevier BV
Date: 02-2011
Publisher: Informa UK Limited
Date: 15-02-2018
Publisher: Elsevier BV
Date: 11-2000
Publisher: Society for Sedimentary Geology
Date: 09-1998
DOI: 10.2110/JSR.68.981
Publisher: Elsevier BV
Date: 2011
Publisher: Springer Science and Business Media LLC
Date: 2000
Publisher: Elsevier BV
Date: 03-2021
Publisher: Society of Economic Geologists
Date: 09-2006
Publisher: Informa UK Limited
Date: 10-1996
Publisher: Elsevier BV
Date: 03-2020
Publisher: Elsevier BV
Date: 04-2016
Publisher: Elsevier BV
Date: 02-2023
Publisher: Informa UK Limited
Date: 09-2005
Publisher: Elsevier BV
Date: 03-2022
Publisher: Frontiers Media SA
Date: 08-06-2016
Publisher: Springer Science and Business Media LLC
Date: 29-08-2019
DOI: 10.1038/S41598-019-48988-3
Abstract: Illitic clay is ubiquitous in clastic hydrocarbon reservoirs, and the host for several radiometric isotopes such as the potassium-argon (K-Ar) and rubidium-strontium (Rb-Sr) systems. This study applied the isotope-dilution thermal ionization mass spectrometry technique for small s les (3–4 mg) to conduct illite Rb-Sr isotope dating of five illitic clay s les from the Silurian bituminous sandstone (SBS) intersected by five drillholes in the Tarim Basin, NW China. The 87 Rb/ 86 Sr ratio of clays is fractionated mainly by the addition of Rb during the illitization of mixed-layer illite/smectite (I/S), which is the dominant clay species in the Tarim Basin s les. The subs le-scale Rb/Sr isotope values suggest that each subs le may contain I/S particles of slightly variable degrees of illitization. Three of the analyzed s les (H6, KQ1 and TZ67) generated Rb-Sr isochron ages of 141 ± 61 Ma, 332 ± 32 Ma and 235 ± 8 Ma (errors quoted at 2σ), respectively. These results are similar to the corresponding K-Ar ages (125 Ma, 389 Ma and 234 Ma). The isotopic ages are consistent with the timing of hydrocarbon charge which varies in different drillholes as constrained by basin modelling, indicating that a closed-system behavior is attained by the hydrocarbon charge that inhibits the illitization of I/S. The Rb-Sr isotope analyses of the other two s les (YM35-1 and Q1) that did not yield isochron ages suggest the conditions for producing isochrons were not satisfied, which may be caused by disturbance of the isotope system by a post-charge hydrothermal event. The outcomes of this study show the robust potential of Rb-Sr clay subs le geochronology for cross-checking isotopic ages yielded by other systems (e.g. K-Ar system) and constraining the timing of hydrocarbon charge.
Publisher: Elsevier BV
Date: 08-2015
Publisher: Informa UK Limited
Date: 02-2013
Publisher: Elsevier BV
Date: 06-2010
Publisher: Informa UK Limited
Date: 11-11-2019
Publisher: Springer Science and Business Media LLC
Date: 04-11-2005
Publisher: Elsevier BV
Date: 09-2016
Publisher: Informa UK Limited
Date: 29-01-2013
Publisher: Springer Science and Business Media LLC
Date: 16-08-2008
Publisher: Elsevier BV
Date: 07-2008
Publisher: Elsevier BV
Date: 07-1988
Publisher: Informa UK Limited
Date: 09-2009
Publisher: Elsevier BV
Date: 04-2018
Publisher: Elsevier BV
Date: 11-2011
Publisher: Elsevier BV
Date: 05-2010
Publisher: Society for Sedimentary Geology
Date: 1998
Publisher: Elsevier BV
Date: 2019
DOI: 10.2139/SSRN.3366101
Publisher: Elsevier BV
Date: 05-1989
Publisher: Elsevier BV
Date: 2016
Publisher: Elsevier BV
Date: 04-2015
Publisher: Elsevier BV
Date: 04-2015
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 04-2007
Publisher: Elsevier BV
Date: 2020
Publisher: Elsevier BV
Date: 02-2014
Publisher: Elsevier BV
Date: 2015
Publisher: Society of Economic Geologists
Date: 09-2006
Publisher: Elsevier BV
Date: 10-2022
Publisher: Elsevier BV
Date: 11-2011
Publisher: Elsevier BV
Date: 08-2007
Publisher: Elsevier BV
Date: 07-2009
Publisher: Elsevier BV
Date: 11-2020
Publisher: Elsevier BV
Date: 2017
Publisher: MDPI AG
Date: 26-10-2021
DOI: 10.3390/EN14216998
Abstract: Carbon dioxide geological storage involves injecting captured CO2 streams into a suitable reservoir. Subsequent mineral trapping of the CO2 as carbonate minerals is one of the most secure forms of trapping. Injection of CO2 dissolved in water or co-injection of CO2 with water may enhance trapping mechanisms. Produced waters are already re-injected into reservoirs worldwide, and their co-injection with CO2 could enhance mineral trapping in low reactivity rock by providing a source of cations. Sandstone drill core from a reservoir proposed for CO2 storage was experimentally reacted with supercritical CO2 and a synthetic produced water. Micro computed tomography (CT), QEMSCAN, and SEM were performed before and after the reaction. The sandstone s le was predominantly quartz with minor illite/muscovite and kaolinite. The sandstone sub-plug micro-CT porosity was 11.1% and 11.4% after the reaction. Dissolved Ca, Mg, and Sr decreased during the reaction. After the reaction with CO2 and synthetic produced water, precipitation of crystalline carbonate minerals calcite and dolomite was observed in the pore space and on the rock surface. In addition, the movement of pore filling and bridging clays, as well as grains was observed. Co-injection of CO2 with produced waters into suitable reservoirs has the potential to encourage CO2 mineral trapping.
Publisher: Elsevier BV
Date: 2019
Publisher: Springer Science and Business Media LLC
Date: 19-05-2005
Publisher: Elsevier BV
Date: 04-2007
Publisher: Elsevier BV
Date: 10-2020
Publisher: Elsevier BV
Date: 06-1993
Publisher: Wiley
Date: 21-10-2004
DOI: 10.1002/RCM.1681
Abstract: A new, fast, continuous flow technique is described for the simultaneous determination of delta33S and delta34S using SO masses 48, 49 and 50. Analysis time is approximately 5 min/s le with measurement precision and accuracy better than +/-0.3 per thousand. This technique, which has been set up using IAEA Ag2S standards S-1, S-2 and S-3, allows for the fast determination of mass-dependent or mass-independent fractionation (MIF) effects in sulfide, organic sulfur s les and possibly sulfate. Small s le sizes can be analysed directly, without chemical pre-treatment. Robustness of the technique for natural versus artificial standards was demonstrated by analysis of a Canon Diablo troilite, which gave a delta33S of 0.04 per thousand and a delta34S of -0.06 per thousand compared to the values obtained for S-1 of 0.07 per thousand and -0.20 per thousand, respectively. Two pyrite s les from a banded-iron formation from the 3710 Ma Isua Greenstone Belt were analysed using this technique and yielded MIF (Delta33S of 2.45 and 3.31 per thousand) comparable to pyrite previously analysed by secondary ion probe.
Publisher: Elsevier BV
Date: 10-2019
Publisher: Elsevier BV
Date: 2003
Publisher: Elsevier BV
Date: 04-2005
Publisher: Elsevier BV
Date: 04-2015
Publisher: Elsevier BV
Date: 06-2018
DOI: 10.1016/J.WASMAN.2018.02.029
Abstract: An examination of the processes contributing to the production of landfill greenhouse gas (GHG) emissions is required, as the actual level to which waste degrades anaerobically and aerobically beneath covers has not been differentiated. This paper presents a methodology to distinguish between the rate of anaerobic digestion (r
Publisher: Elsevier BV
Date: 05-2012
Publisher: Springer Science and Business Media LLC
Date: 1988
DOI: 10.1038/331254A0
Publisher: MDPI AG
Date: 12-12-2019
DOI: 10.3390/GEOSCIENCES9120513
Abstract: CO2-induced reactions in low salinity aquifers overlying CO2 storage sites are of interest to understand potential reactions or impacts in the possible case of a leak. Previous investigations of overlying aquifers in the context of CO2 storage have focused on pure CO2 streams, however captured industrial CO2 streams may contain ancillary gases, including SO2, O2, NOx, H2S, N2, etc., some of which may be more reactive than CO2 when dissolved in formation water. Eight drill cores from two wells in a low salinity sandstone aquifer that overlies a target CO2 storage complex are characterised for porosity (helium, mercury injection, or micro CT), permeability, and mineral content. The eight Hutton Sandstone cores are variable with porosities of 5.2–19.6%, including carbonaceous mudstones, calcite cemented sandstones, and quartz rich sandstones, common lithologies that may be found generally in overlying aquifers of CO2 storage sites. A chlorite rich sandstone was experimentally reacted with CO2 and low concentrations of SO2 to investigate the potential reactions and possible mineral trapping in the unlikely event of a leak. Micro CT characterisation before and after the reaction indicated no significant change in porosity, although some fines movement was observed that could affect permeability. Dissolved concentrations of Fe, Ca, Mn, Cr, Mg, Rb, Li, Zn, etc., increased during the reaction, including from dissolution of chlorite and trace amounts of ankerite. After ~40 days dissolved concentrations including Fe, Zn, Al, Ba, As and Cr decreased. Chlorite was corroded, and Fe-rich precipitates mainly Fe-Cr oxides were observed to be precipitated on rock surfaces after experimental reaction. Concentrations of Rb and Li increased steadily and deserve further investigation as potential monitoring indicators for a leak. The reaction of chlorite rich sandstone with CO2 and SO2 was geochemically modelled over 10 years, with mainly chlorite alteration to siderite mineral trapping 1.55 kg/m3 of CO2 and removing dissolved Fe from solution. Kaolinite and chalcedony precipitation was also predicted, with minor pyrite precipitation trapping SO2, however no changes to porosity were predicted.
Publisher: Elsevier BV
Date: 2011
Publisher: Informa UK Limited
Date: 09-2005
Publisher: Elsevier BV
Date: 06-2010
Publisher: Elsevier BV
Date: 12-2015
Publisher: Elsevier BV
Date: 15-03-2006
Publisher: Elsevier BV
Date: 10-2001
Publisher: Elsevier BV
Date: 09-2015
Publisher: Elsevier BV
Date: 2011
Publisher: Elsevier BV
Date: 02-2003
Publisher: Elsevier BV
Date: 08-2000
Publisher: Elsevier BV
Date: 09-2023
Publisher: Elsevier BV
Date: 04-2015
Publisher: Elsevier BV
Date: 11-2013
Publisher: Elsevier BV
Date: 07-2000
Publisher: Society of Economic Geologists
Date: 08-1993
Start Date: 12-2004
End Date: 12-2007
Amount: $270,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 11-2008
End Date: 09-2012
Amount: $785,221.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2009
End Date: 12-2011
Amount: $210,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2002
End Date: 12-2004
Amount: $202,118.00
Funder: Australian Research Council
View Funded ActivityStart Date: 06-2006
End Date: 06-2009
Amount: $400,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 09-2011
End Date: 09-2014
Amount: $330,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2009
End Date: 06-2010
Amount: $950,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 04-2006
End Date: 06-2010
Amount: $350,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2008
End Date: 12-2008
Amount: $250,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2005
End Date: 12-2007
Amount: $552,475.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2015
End Date: 04-2016
Amount: $180,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2015
End Date: 12-2017
Amount: $310,700.00
Funder: Australian Research Council
View Funded ActivityStart Date: 07-2003
End Date: 07-2006
Amount: $660,000.00
Funder: Australian Research Council
View Funded Activity