About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advanced Ceramics for Environmental Remediation
|
| Presentation Title |
N-4: Enhanced Congo Red Adsorption and Photo-Fenton Oxidation Over an Iron-Impeded Geopolymer from Ferruginous Kaolinite: Steric, Energetic, Oxidation, and Synergetic Studies |
| Author(s) |
Esraa R. Adly |
| On-Site Speaker (Planned) |
Esraa R. Adly |
| Abstract Scope |
Iron-impeded geopolymer (Fe/GP) was synthesized from natural ferruginous kaolinite and optical waste for enhanced decontamination of Congo red (CR) dye. The adsorption properties of Fe/GP were assessed using an advanced monolayer equilibrium model of one energy. Fe/GP possessed an active site density of 391.3 mg/g, which induced an adsorption capacity of 634 mg/g at the saturation state. Adsorbed CR molecules per site reflected the possible uptake of two molecules per site via a multimolecular mechanism. As a catalyst, notable activity toward photo-Fenton oxidation was achieved even at high CR concentrations. Complete oxidation was observed after 30 (CR concentration: 10 mg/L), 50 (20 mg/L), 80 (30 mg/L), 120 (40 mg/L), and 140 min (50 mg/L). High oxidation efficiency was achieved using 0.1 g/L Fe/GP, 0.1 mL of hydrogen peroxide (H2O2), and a visible light source. Increasing the Fe/GP dosage to 0.3 g/L resulted in complete oxidation of CR after 220 min. |