Photocatalytic degradation of reactive dyes and real textile composite wastewater using TiO2/MWCNT nanocomposite under UVA and UVA-LED irradiation. A comparative study

• Autorzy: Kumar Deivanai Suresh , Sellappa Kanmani

Identyfikatory

DOI

10.5277/epe190207

• Języki publikacji: EN

Abstrakty

EN

Nano TiO₂ and TiO₂/MWCNT nanocomposite synthesized by the sol-gel method were characterized by XRD, BET, SEM, EDAX and FTIR techniques. These nanoparticles were used for photocatalytic decolorisation and degradation of three different reactive dyes such as Reactive Orange 16 (RO 16), Reactive Yellow 145 (RY 145) and Reactive Red 195 (RR 195) and real textile composite wastewater under the UVA and UVA-LED irradiation at room temperature. The maximum color removal of 96% and COD removal of 72% were achieved after 5 h in the presence of TiO₂/MWCNT and H₂O₂ under UVA-LED irradiation. The kinetic studies obey pseudo-first order kinetics which is discussed in terms of the Langmuir–Hinshelwood kinetic model. The maximum degradation of 50% was achieved after 5 h in the presence of H₂O₂ using TiO₂/MWCNT/UVA-LED for real textile composite wastewater. This study revealed that TiO₂/MWCNT has improved the photocatalytic activity when compared to that of bare TiO₂ under similar conditions. UVA-LED could be an alternative light source for the replacement of the conventional UV light for the photocatalytic treatment of reactive dyes.

Słowa kluczowe

EN

carbon nanotube; methylene blue; photodegradation

PL

nanorurki węglowe; błękit metylenowy; fotodegradacja

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2019
• Tom: Vol. 45, nr 2
• Strony: 95--116
• Opis fizyczny: Bibliogr. 30 poz., tab., rys.

Twórcy

autor

Kumar Deivanai Suresh

• Centre for Environmental Studies, Anna University, Chennai – 600025, Tamil Nadu, India

autor

Sellappa Kanmani

• Centre for Environmental Studies, Anna University, Chennai – 600025, Tamil Nadu, India

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).