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ORIGINAL RESEARCH article

Front. Environ. Chem.
Sec. Sorption Technologies
Volume 6 - 2025 | doi: 10.3389/fenvc.2025.1527112
This article is part of the Research Topic Contemporary and Emerging Developments in Radionuclide Removal from Wastewater View all articles

The geochemical control of birnessite on selenium fate and transport at environmental concentrations

Provisionally accepted
Ilana B Szlamkowicz Ilana B Szlamkowicz Giovanna B Ribeiro Giovanna B Ribeiro Anna T Nguyen Anna T Nguyen Vasileios Anagnostopoulos Vasileios Anagnostopoulos *
  • University of Central Florida, Orlando, United States

The final, formatted version of the article will be published soon.

    This study investigated the geochemical controls on selenium mobility by two forms of birnessite mineral, focusing on the influence of pH, concentration, and the presence of cations.The research aimed to understand the dominant reaction mechanism (redox vs. sorption) under environmentally relevant selenium concentrations. Experiments were conducted to study the interaction of selenium with the birnessite minerals under varying conditions. The results demonstrated a significant shift in the dominant reaction mechanism from slow redox reactions observed at artificially elevated selenium concentrations to fast sorption processes at environmentally relevant concentrations. This finding highlights the crucial role of selenium concentration in determining its interaction with birnessite minerals and emphasizes the importance of conducting research under realistic conditions to accurately predict selenium mobility and develop effective remediation strategies.

    Keywords: manganese oxide, birnessite, Selenium, Selenite, sorption, Oxidation

    Received: 12 Nov 2024; Accepted: 07 Jan 2025.

    Copyright: © 2025 Szlamkowicz, Ribeiro, Nguyen and Anagnostopoulos. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Vasileios Anagnostopoulos, University of Central Florida, Orlando, United States

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