Biogeochemical controls on contaminant and carbon dynamics in natural and engineered systems

对自然和工程系统中污染物和碳动力学的生物地球化学控制

• 批准号: CRC-2018-00089
• 负责人: Hausladen, Debra
• 金额: $ 8.74万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Canada Research Chairs
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=696068
• 关键词: Biogeochemical; controls; contaminant; carbon; dynamics

The preservation of freshwater resources and the release of greenhouse gases represent critical environmental issues in Canada and worldwide. Soils play a central role in these challenges. The goal of this CRC in redox biogeochemistry is to generate mechanistic understanding of mineral control on carbon sequestration in soils (the largest dynamic carbon reservoir in the biosphere) and understand groundwater contamination threats. By using a multidisciplinary approach, the proposed research program addresses two essential questions: (i) What is the role of minerals such as manganese oxides in soil carbon cycling? and (ii) How do interactions among microorganisms, minerals, and organic matter control redox-active contaminants (anthropogenic and geogenic) which threaten groundwater quality?

保存淡水资源和温室气体的释放代表了加拿大和全球的关键环境问题。土壤在这些挑战中起着核心作用。该CRC在氧化还原生物地球化学中的目的是对土壤中碳固相的矿物质控制（生物圈中最大的动态碳储层）产生机械理解，并了解地下水污染威胁。通过使用多学科方法，提出的研究计划解决了两个基本问题：（i）矿物质（例如锰氧化物）在土壤碳循环中的作用是什么？ （ii）微生物，矿物质和有机物之间的相互作用如何控制氧化还原活性污染物（人为和地球），从而威胁地下水质量？