Degradation of Brilliant Blue by Heterogeneous Fenton and UV-Fenton Processes

被引：5
作者：
Pinedo-Hernandez, S. [1 ]
Sanchez-Mendieta, V [1 ,2 ]
Solache-Rios, M. [3 ]
Gutierrez-Segura, E. [1 ]
机构：
[1] Univ Autonoma Estado Mexico, Fac Quim, Paseo Colon & Tollocan S-N, Tolucamexico 50180, Estado De Mexic, Mexico
[2] UAEM UNAM, Ctr Conjunto Invest Qulm Sustentable, Carretera Toluca Ixtlahuaca Km 14-5, Toluca 52750, Estado De Mexic, Mexico
[3] Inst Nacl Invest Nucl, Dept Quim, Carretera Mexico Toluca S-N, La Marquesa 52750, Ocoyoacac, Mexico
来源：
WATER AIR AND SOIL POLLUTION | 2022年 / 233卷 / 07期
关键词：
Brilliant blue; Zeolites; Metal nanoparticles; Fenton process; FE-ZEOLITIC TUFF; SORPTION PROPERTIES; IRON NANOPARTICLES; AQUEOUS-SOLUTION; DYE; CLINOPTILOLITE; ADSORPTION; REMOVAL; CATALYST; CU;
D O I：
10.1007/s11270-022-05722-6
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Iron-modified zeolitic tuff (Ze-Fe) and a composite (Ze-Fe(Fe-Cu)) in the presence of H2O2 with and without UV light were investigated for the removal of brilliant blue. The composite was synthesized from the ferric modified zeolitic tuff and reduction in-situ of Fe and Cu via sodium borohydride. The parameters considered in this study were pH, dose of H2O2, contact time, and initial concentration of brilliant blue. The kinetic results from Fenton and photo-Fenton processes were best adjusted to the second-order model. The degradation efficiencies were 98.8% for Ze-Fe and 95.94% for Ze-Fe(Fe-Cu) composite. The Ze-Fe(Fe-Cu) composite showed a higher degradation rate than Ze-Fe, since the equilibrium was reached for the composite in about 20 h and for the modified zeolite (Ze-Fe) in about 50 h. The adsorption capacities at equilibrium were 0.99 and 0.96 mg/g for Ze-Fe and Ze-Fe(Fe-Cu), respectively. The isotherm data of the adsorption of brilliant blue by both materials were best fitted to the Freundlich model, which indicates that the adsorption is carried out on heterogeneous surfaces.
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页数：13
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