Preparation, Characterization, and Application of Novel Ferric Oxide-Amine Material for Removal of Nitrate and Phosphate in Water

Abstract

Ferric oxide-amine material was synthesized and applied as a novel adsorbent for nitrate and phosphate removal from aqueous solution. The properties of ferric oxide-amine were examined using TGA, FTIR, BET, SEM, EDX, SEM-mapping, and XRD analysis. The results showed that the adsorption using ferric oxide-amine material reached equilibrium after 30 and 60 min for nitrate and phosphate, respectively. The highest nitrate and phosphate adsorption capacities were 131.4 mg nitrate/g at pH 5-6 and 42.1 mg phosphate/g at pH 6. The effects of adsorbent dosage, initial concentrations of nitrate and phosphate, and adsorption temperature were also investigated. Among the three adsorbents of ferric oxide-amine, ferric oxide, and Akualite A420 ion exchange resin, ferric oxide-amine material had the highest adsorption capacity for nitrate and phosphate removal. These results suggest a great potential use of ferric oxide-amine material for water treatment in practical applications.

Adsorption Optimization for the Removal of Cadmium in Water by Aluminum (Hydr)oxide on Cation Exchange Resin

“…However, the adsorption capacity decreases with the larger adsorbent amount since the Cd distributed on the surface of each adsorbent unit decreases. This is consistent with previous studies on the influence of adsorbent mass on the efficiency and adsorption capacity of the material [12,19]. In this study, the mass of 50 mg of material in 50 mL of 10 mg/L Cd solution gave a Cd adsorption efficiency of 99.97%, an adsorption capacity of 9.97 mg/g, and a Cd concentration after treatment of 0.029 mg/L.…”

Effect of pH on the Performance of Bi2O2CO3 Nanoplates for Methylene Blue Removal in Water by Adsorption and Photocatalysis

“…The peaks at 1384 and 1468 cm −1 are the stretching vibrations of C=O [19]. The bands at 541 and 851 cm −1 were assigned to the stretching vibra-tion of Bi−O [24], while the wide band at 3442 cm −1 and peak at 1640 cm −1 are the stretching and deformation vibrations of OH − groups in physically absorbed water molecules [25]. Overall, the results showed that no impurities (e.g.…”