Reactive oxygen species production on oxygenation of subsurface sediments

地下沉积物氧化过程中活性氧的产生

• 批准号: DP170103512
• 负责人: Prof David Waite
• 金额: $ 23.43万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP170103512
• 关键词: Reactive; oxygen; species; production; oxygenation

This project aims to examine the nature, extent and effect of redox processes in subsurface environments. Reactive oxygen species, including hydrogen peroxide, superoxide and hydroxyl radicals, transform and affect redox-active substances in the environment such as arsenic, uranium and natural organic matter (which may be oxidised to carbon dioxide). Production of significant quantities of reactive oxygen species on oxygenation of subsurface sediments through actions such as aquifer recharge and high flow events may alter the form and mobility of trace elements and influence the cycling of carbon and eventual efflux of carbon dioxide to the atmosphere. This project will examine the nature, extent and effect of these redox processes in selected subsurface environments. This research could have implications for contaminant transformation and fate and carbon cycling.

该项目旨在研究地下环境中氧化还原过程的性质、程度和影响。活性氧物质，包括过氧化氢、超氧化物和羟基自由基，转化和影响环境中的氧化还原活性物质，如砷、铀和天然有机物（可氧化为二氧化碳）。通过含水层补给和高流量事件等作用，地下沉积物氧化产生大量活性氧，可能会改变微量元素的形式和流动性，影响碳的循环和二氧化碳最终排放到大气中。该项目将研究这些氧化还原过程在选定的地下环境中的性质、程度和影响。这项研究可能对污染物的转化和归宿以及碳循环产生影响。