Caroline Peacock | University of Leeds (original) (raw)
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Papers by Caroline Peacock
Applied Clay Science, May 1, 2015
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AGU Fall Meeting Abstracts, Dec 1, 2014
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Crystal Growth & Design, Feb 1, 2017
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EGU General Assembly Conference Abstracts, Apr 1, 2016
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Mineralogical Magazine, Nov 1, 2015
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Nature Communications, May 17, 2022
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EarthArXiv (California Digital Library), Aug 16, 2023
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Applied and Environmental Microbiology, Nov 10, 2020
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Geochimica et Cosmochimica Acta
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Nature Geoscience
Photosynthesis produces molecular oxygen, but it is the burial of organic carbon in sediments tha... more Photosynthesis produces molecular oxygen, but it is the burial of organic carbon in sediments that has allowed this O2 to accumulate in Earth’s atmosphere. Yet many direct controls on the preservation and burial of organic carbon have not been explored in detail. For modern Earth, it is known that reactive iron phases are important for organic carbon preservation, suggesting that the availability of particulate iron could be an important factor for the oxygenation of the oceans and atmosphere over Earth history. Here we develop a theoretical model to investigate the effect of mineral–organic preservation on the oxygenation of the Earth, supported by a proxy compilation for terrigenous inputs and the burial of reactive iron phases, and find that changes to the rate of iron input to the global ocean constitute an independent control on atmosphere–ocean O2 and marine sulfate levels. We therefore suggest that increasing continental exposure and denudation may have helped fuel the rise i...
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Earth-Science Reviews
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Supplementary Data for article 'Carboxyl-richness controls organic carbon preservation during... more Supplementary Data for article 'Carboxyl-richness controls organic carbon preservation during coprecipitation with iron (oxyhydr)oxides in the natural environment' by Curti et al.
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Journal of Hazardous Materials, 2021
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Journal of Hazardous Materials, 2020
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Geochimica et Cosmochimica Acta, 2019
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Chemical Geology, 2018
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Nature Nanotechnology
Artificial ocean fertilization (AOF) aims to safely stimulate phytoplankton growth in the ocean a... more Artificial ocean fertilization (AOF) aims to safely stimulate phytoplankton growth in the ocean and enhance carbon sequestration. AOF carbon sequestration efficiency appears lower than natural ocean fertilization processes due mainly to the low bioavailability of added nutrients, along with low export rates of AOF-produced biomass to the deep ocean. Here we explore the potential application of engineered nanoparticles (ENPs) to overcome these issues. Data from 123 studies show that some ENPs may enhance phytoplankton growth at concentrations below those likely to be toxic in marine ecosystems. ENPs may also increase bloom lifetime, boost phytoplankton aggregation and carbon export, and address secondary limiting factors in AOF. Life-cycle assessment and cost analyses suggest that net CO2 capture is possible for iron, SiO2 and Al2O3 ENPs with costs of 2–5 times that of conventional AOF, whereas boosting AOF efficiency by ENPs should substantially enhance net CO2 capture and reduce th...
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Applied Clay Science, May 1, 2015
Bookmarks Related papers MentionsView impact
AGU Fall Meeting Abstracts, Dec 1, 2014
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Crystal Growth & Design, Feb 1, 2017
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EGU General Assembly Conference Abstracts, Apr 1, 2016
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Mineralogical Magazine, Nov 1, 2015
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Nature Communications, May 17, 2022
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EarthArXiv (California Digital Library), Aug 16, 2023
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Applied and Environmental Microbiology, Nov 10, 2020
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Geochimica et Cosmochimica Acta
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Nature Geoscience
Photosynthesis produces molecular oxygen, but it is the burial of organic carbon in sediments tha... more Photosynthesis produces molecular oxygen, but it is the burial of organic carbon in sediments that has allowed this O2 to accumulate in Earth’s atmosphere. Yet many direct controls on the preservation and burial of organic carbon have not been explored in detail. For modern Earth, it is known that reactive iron phases are important for organic carbon preservation, suggesting that the availability of particulate iron could be an important factor for the oxygenation of the oceans and atmosphere over Earth history. Here we develop a theoretical model to investigate the effect of mineral–organic preservation on the oxygenation of the Earth, supported by a proxy compilation for terrigenous inputs and the burial of reactive iron phases, and find that changes to the rate of iron input to the global ocean constitute an independent control on atmosphere–ocean O2 and marine sulfate levels. We therefore suggest that increasing continental exposure and denudation may have helped fuel the rise i...
Bookmarks Related papers MentionsView impact
Earth-Science Reviews
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Bookmarks Related papers MentionsView impact
Supplementary Data for article 'Carboxyl-richness controls organic carbon preservation during... more Supplementary Data for article 'Carboxyl-richness controls organic carbon preservation during coprecipitation with iron (oxyhydr)oxides in the natural environment' by Curti et al.
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Bookmarks Related papers MentionsView impact
Journal of Hazardous Materials, 2021
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Journal of Hazardous Materials, 2020
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Geochimica et Cosmochimica Acta, 2019
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Chemical Geology, 2018
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Nature Nanotechnology
Artificial ocean fertilization (AOF) aims to safely stimulate phytoplankton growth in the ocean a... more Artificial ocean fertilization (AOF) aims to safely stimulate phytoplankton growth in the ocean and enhance carbon sequestration. AOF carbon sequestration efficiency appears lower than natural ocean fertilization processes due mainly to the low bioavailability of added nutrients, along with low export rates of AOF-produced biomass to the deep ocean. Here we explore the potential application of engineered nanoparticles (ENPs) to overcome these issues. Data from 123 studies show that some ENPs may enhance phytoplankton growth at concentrations below those likely to be toxic in marine ecosystems. ENPs may also increase bloom lifetime, boost phytoplankton aggregation and carbon export, and address secondary limiting factors in AOF. Life-cycle assessment and cost analyses suggest that net CO2 capture is possible for iron, SiO2 and Al2O3 ENPs with costs of 2–5 times that of conventional AOF, whereas boosting AOF efficiency by ENPs should substantially enhance net CO2 capture and reduce th...
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