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March 14, 2026Next Materials0 citationsOpen Access

Fixed-bed column performance of amino-functionalized MCM-41 mesoporous silica for Cr(VI) removal: Optimization of operating conditions and regeneration studies

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PMP.P. MartinNFN. FellenzMCM. Calero

Key Points

  • The research aims to assess the performance of amino-functionalized MCM-41 for removing Cr(VI) under continuous-flow conditions.
  • Conducted fixed-bed column experiments to evaluate adsorption capacity.
  • Implemented series column configuration.
  • Tested NaOH for regeneration of amino-functionalized MCM-41.
  • Achieved Cr(VI) removal capacity of up to 110.5 mg/g.
  • Demonstrated simultaneous adsorption and partial reduction to Cr(III).
  • Enhanced performance and reusability observed with regeneration.

Abstract

• Amino-functionalized MCM-41 was evaluated under continuous-flow fixed-bed conditions. • High Cr(VI) removal capacity (up to 110.5 mg/g) was achieved in fixed-bed column experiments. • Simultaneous Cr(VI) adsorption and partial reduction to Cr(III) occurred during column operation. • Series column configuration and NaOH regeneration enhanced operational performance and reusability.

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Cite This Study

Martin et al. (2026) studied this question.

synapsesocial.com/papers/69b4fa6fb39f7826a300b305https://doi.org/10.1016/j.nxmate.2026.101817
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