Photocatalytic Degradation of Alizarin Red S, Amaranth, Congo Red, and Rhodamine B Dyes Using UV Light Modified Reactor and ZnO, TiO2, and SnO2 as Catalyst

The photocatalytic degradation of dyes (alizarin red S, amaranth, congo red, and rhodamine B) present in wastewater was performed with UV lamp. catalysts employed for this investigation were ZnO, TiO2, SnO2. kinetic studies followed first order reaction. ZnO found to be most efficient photo-catalyst degrading these dyes. optimal result alizarin S k = 0.2118 min?1, t1/2 3.27 min, R2 0.7998, amaranth 0.146 4.74 0.8348, 0.2452 2.8 0.8382, B 0.1915 3.6 0.76.