Project description
The role of microbial metabolites in selenium transformation
As a naturally occurring trace element, selenium can become toxic in certain forms, posing environmental and health risks. Its transformation is influenced by microorganisms and their metabolites, particularly extracellular polymeric substances (EPS). However, the mechanisms by which EPS affects the redox cycling of selenium oxyanions in drinking water and wastewater remain poorly understood. Supported by the Marie Skłodowska-Curie Actions programme, the BIOTAC project explores the role of EPS in the reduction of selenium oxyanions. The project will use in situ and in vitro microcosms combined with electrochemical and spectroscopic techniques to elucidate the key agents involved in Se redox transformation. Insights from this research will inform the development of biotechnologies for Se remediation and recovery.
Objective
Selenium (Se) is a naturally occurring trace element in the earth's crust. Microorganisms and their metabolites, such as extracellular polymeric substances (EPS) play a major role in the redox transformation of metalloids in the environment. However, how EPS affects Se oxyanions redox cycling in drinking water and wastewater, what the underlying mechanisms, especially electron transfer mechanisms between EPS and Se, and which components of EPS are involved in Se redox transformation are unclear. Especially concerning electron transfer mechanisms between EPS-Se oxyanions to form BioSeNPs and which redox-active components of EPS are involved in the redox cycling of Se oxyanions. How EPS-mediated reduction of Se affects the isotopic fractions of Se during the reduction process. To what extent do these pure cultures strain-derived EPS-Se oxyanions reduction mechanisms apply to the Continuous Stirred Tank Reactor (CSTR) and an Up-flow anaerobic sludge blanket (UASB) reactor system for water and wastewater treatment, respectively. In this research, we plan to set up in situ and in vitro microcosms combined with electrochemical and spectroscopic techniques to examine 1) the key agents and structural components of EPS involved in the reduction of Se(IV/VI), 2) the electron transfer mechanisms between EPS and Se oxyanions for the reduction of Se(IV/VI); 3) the significance of the Se reduction to the environmental fate and recovery of BioSeNPs in CSTR and UASB reactor. The roles of EPS-mediated reduction processes on the isotopic fractions of Se. The results from this project will be vital to clarifying the role of microbial EPS and their components in the BioSeNPs cycle and developing biotechnologies to remediate and recover environmental Se.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology environmental engineering water treatment processes wastewater treatment processes
- natural sciences chemical sciences inorganic chemistry metalloids
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2023-PF-01
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01328 Dresden
Germany
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