Comment: |
synthetic ferrihydrite; multipoint N2-BET (5 points); in this article varying amounts of ferrihydrite were added to Hanford fine sand (HFS): SSA = 10.7 m²/g for HFS without Fe oxide, SSA = 13.7+-0.1 m²/g for unreacted natural HFS, SSA = 17.7 m²/g for HFS+1 wt% ferrihydrite, SSA = 24.5+-0.2 m²/g for HFS+5 wt% ferrihydrite |