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March 13, 2026Separation and Purification TechnologyOpen Access

Nitrate removal using metal-acid light induced (MALI) cycle

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Authors

VHV. HahnAGAlicia L. García-CostaJCJose Antonio Casas

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Overview

Experiments demonstrate effective nitrate removal in a light-assisted process, highlighting its practical applications.

Key Points

  • The aim is to investigate the MALI cycle for effectively reducing nitrate levels using light and a metal-acid system.
  • Applied homogeneous Fe 3+ /oxalate system for nitrate reduction
  • Conducted kinetic experiments to assess reaction orders
  • Investigated effects of variables on the Fe-Oxalate-UV cycle
  • Tested the process in real groundwater conditions
  • Achieved complete nitrate conversion with minimal by-products
  • Established pseudo-first order for nitrate and zero-order for oxalate kinetics
  • Identified operational window defined by photon flux and reagent ratio
  • Mild acidification enhanced nitrate reduction rates in groundwater

Cite This Study

Hahn et al. (2026) studied this question.

synapsesocial.com/papers/69b3aaa802a1e69014ccb79dhttps://doi.org/10.1016/j.seppur.2026.137539
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