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Efficient Removal of Chromium(VI) from Water using Fe-MOF/NiAl-LDH Composite Adsorbent

Strategic Insights

— 1 min read

Researchers at Hubei University of Technology have developed an efficient method for removing chromium(VI) from water using a composite adsorbent. The Fe-MOF/NiAl-LDH composite, created through a simple and cost-effective process, has been shown to effectively remove chromium(VI) from contaminated water. This breakthrough has significant implications for addressing the growing environmental concerns of chromium(VI) pollution.

Key Takeaways:

  • The Fe-MOF/NiAl-LDH composite adsorbent is capable of removing up to 91.08% of chromium(VI) from water in just 60 minutes, with a maximum adsorption capacity of 42.73 mg/g.
  • The composite material is highly regenerative, with the ability to be reused multiple times without significant changes in adsorption capacity or structural integrity.
  • The study investigated various parameters, including composite material type, contact time, solution pH, adsorbent dosage, initial Cr(VI) concentration, competitive ions, and reuse, to optimize the removal efficiency of chromium(VI).
  • The use of a composite adsorbent like Fe-MOF/NiAl-LDH can provide a cost-effective and sustainable solution for chromium(VI) removal from contaminated water sources.
  • The study highlights the importance of resource reuse, as the composite material utilized AlOOH, a by-product of the aluminum-water hydrogen production system, as one of its precursors.

Statistics:

  • 91.08% removal efficiency of chromium(VI) from contaminated water in 60 minutes.
  • Maximum adsorption capacity of 42.73 mg/g for chromium(VI) on the Fe-MOF/NiAl-LDH composite adsorbent.
  • Ability to regenerate the adsorbent using a NaCO solution.
  • Successful reuse of the composite material for multiple remediation cycles without significant loss of adsorption capacity.
  • AlOOH, a by-product of the aluminum-water hydrogen production system, was utilized as a precursor for the composite material.

Sources:

  • NewsRx. Hubei University of Technology Reports Findings in Science [Efficient and rapid removal of chromium(VI) from water via NH2-MIL-101(Fe)/NiAl-LDH composite adsorbent]. Chemicals & Chemistry. July 11, 2025; p 1728.
  • Environmental Research. Efficient and rapid removal of chromium(VI) from water via NH2-MIL-101(Fe)/NiAl-LDH composite adsorbent. 2025:122154.
  • Academic Press Inc Elsevier Science, 525 B St, Ste 1900, San Diego, CA 92101-4495, USA.

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