Efficiency of Adsorption and Photodegradation of Composite TiO2/Fe2O3 and Industrial Waste in Cyanide Removal

• DOI: 10.20944/preprints202210.0133.v1
• Publication Date: 2022-10-11T06:35:36Z
• Authors: Blanca Margarita ...; Antonia Martinez-...; Ma. de Jesus Sori...; Marco Antonio San...; Sofia Estrada-Flores; Francisco Raul Ca...
• Keywords: Photodegradation; Sunlight

This research is mainly focused on the evaluation of TiO2/Fe2O3 composite and two industrial types waste (kaolin (Clay-K) a blast furnace sludge (BFS)) as adsorbent materials cyanide photocatalysts. First, adsorption tests were performed in absence light. During photodegradation experiments, effect type irradiation (ultraviolet (UV) light), visible light natural sunlight), time, photocatalyst, well irradiance case sunlight use, investigated. Adsorption results indicate that Clay-K adsorb approximately twice much compared to BFS sample, which only adsorbs 33.3% (124.87 mg/g); this due its smaller specific surface area (5.69 m2/g) other (Clay-K (14.93 m2/g 66.59 m2/g, respectively). The obtained from study under UV irradiation, samples photodegrade by 96.44% 92.66%, respectively. On hand, using plus solar best photocatalyst was TiO2/Fe2O3, with 98.66% photodegradation. use (irradiance 600 800 W/m2) NaCN solution 750 mg/L, material most efficient cyanide, obtaining 97% hours 87% just 30 minutes irradiation.