Adsorption of sulfur compound utilizing rice husk ash modified with niobium

- Adsorbents based in RHA modified with niobium were prepared by impregnation.
- The impregnation modified the particle size and topology of RHA particles.
- The adsorbents were applied in sulfur removal in model liquid fuels.
- The larger sulfur removal (>50%) was achieved using RHA with 5 wt.% niobium oxide.
- The adsorbent show great selectivity in adsorption experiments.