Decolorization of Rhodamine B by Fenton reaction using iron nanoparticles supported in Brazil nutshell biomass

Materia

article

Rossean Golin¹  Aline Gonçalves Barbosa¹  Viviane Cristina Padilha Lopes¹  Danila Soares Caixeta¹  Frederico Carlos Martins de Menezes Filho²  Evandro Luiz Dall’Oglio¹  Leonardo Gomes de Vasconcelos¹  Eduardo Beraldo de Morais¹ 

[1] Universidade Federal de Mato Grosso;Universidade Federal de Viçosa

关键词: Textile dyes;    Fenton-like oxidation;    Kinetic;    Wastes;   

DOI  :  10.1590/1517-7076-RMAT-2022-0039

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

In this study, Brazil nutshell biomass supported with iron nanoparticles (BCB-NPsFe) was used to decolorize the dye Rhodamine B (RdB) using Fenton catalytic reaction. Higher discoloration rate was 94.3% obtained at the condition: solution containing 20 mg/L RdB, 1.0 g/L BCB-NPsFe, 200 mM H2O2, pH 4.0, temperature of 45 °C, and reaction time of 240 minutes. The mineralization rate of RdB under these same conditions was 61.3%. Using the Arrhenius equation, the activation energy of RdB decolorization was estimated at 36.25 kJ/mol, a low value compared to other studies. The reusability of BCB-NPsFe in five decolorization cycles showed that the RdB decolorization was not affected. BCB-NPsFe also efficiently decolorized Malachite green (97.1%), crystal violet (87.0%), reactive black B (91.2%), and reactive red 239 (89.1%). These results indicated that BCB-NPsFe could be an economical and eco-friendly treatment strategy for wastewater containing dyes.

【 授权许可】

CC BY