Photocatalytic Degradation of Alizarin Red S, Amaranth, Congo Red, and Rhodamine B Dyes Using UV Light Modified Reactor and ZnO, TiO[sub.2], and SnO[sub.2] as Catalyst

The photocatalytic degradation of dyes (alizarin red S, amaranth, congo red, and rhodamine B) present in wastewater was performed with UV lamp. The catalysts employed for this investigation were ZnO, TiO[sub.2], and SnO[sub.2]. The kinetic studies of dyes degradation followed first order reaction. Z...

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Bibliographic Details
Published in:Journal of chemistry 2021-01, Vol.2021
Main Authors: Rehman, Rabia, Waheed-Uz-Zaman, Raza, Asma, Noor, Warda, Batool, Amna, Maryem, Hamna
Format: Article
Language:English
Subjects:
Methylene blue
Wastewater
Zinc oxide
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Summary:The photocatalytic degradation of dyes (alizarin red S, amaranth, congo red, and rhodamine B) present in wastewater was performed with UV lamp. The catalysts employed for this investigation were ZnO, TiO[sub.2], and SnO[sub.2]. The kinetic studies of dyes degradation followed first order reaction. ZnO was found to be most efficient photo-catalyst for degrading these dyes. The optimal result for alizarin red S was k=0.2118min[sup.-1], t[sub.1/2]=3.27min, and R[sup.2]=0.7998, for amaranth was k=0.146min[sup.-1], t[sub.1/2]=4.74min, and R[sup.2]=0.8348, for congo red was k=0.2452min[sup.-1], t[sub.1/2]=2.8min, and R[sup.2]=0.8382, and for rhodamine B was k=0.1915min[sup.-1], t[sub.1/2]=3.6min, and R[sup.2]=0.76.
ISSN:2090-9063
DOI:10.1155/2021/6655070