Evaluation of mass transfer in packed column for competitive adsorption of Tartrazine and brilliant blue FCF: A statistical analysis

Results in Engineering

María Cristina González-Vargas¹  Enrique Ruiz-Reyes¹  Luis Santiago Quiroz-Fernández²  Ricardo José Baquerizo-Crespo³  Joan Manuel Rodríguez-Díaz⁴  Kevin Jhon Fernández-Andrade⁵  Iván Leandro Rodríguez-Rico⁵ 

[1] Departamento de Procesos Químicos. Universidad Técnica de Manabí. Av. Urbina y Che Guevara, Portoviejo, Manabí, Ecuador;Departamento de Ingeniería Química. Universidad Central “Marta Abreu” de Las Villas. Carretera a Camajuaní km 51/2 Santa Clara, Villa Clara, Cuba;Departamento de Química, Instituto de Ciencias Básicas, Universidad Técnica de Manabí. Av. Urbina y Che Guevara, Portoviejo, Manabí - Ecuador;Instituto de Posgrado, Universidad Técnica de Manabí, S/N, Avenida Urbina y Che Guevara, Portoviejo, 130104, Ecuador;Laboratorio de Análisis Químicos y Biotecnológicos. Instituto de Investigación, Universidad Técnica de Manabí. Av. Urbina y Che Guevara, Portoviejo, Manabí, Ecuador;

关键词: Binary mixtures;    Food dyes;    Dynamic regime;    Biomass;    Mechanism;    Experimental design;   

DOI  :  

来源: DOAJ

【 摘 要 】

Environmental pollution as the result effluents discharged by industry is increasing, principally owing to mixtures of pollutants, including dyes. The objective of the present study was to evaluate the adsorption process of the bicomponent mixture of Tartrazine (Y5) and Brilliant Blue FCF (B1) dyes in a dynamic regime (fixed-bed column), using rice husks (RH) as adsorbent material. A 3-level response surface design of experiments was employed to evaluate the adsorption process of the dyes in the mixture at the following initial concentrations: 0.0216, 0.0739, 0.1261, 0.1477 (mmol L−1). The response surface analysis of the experimental design made it possible to identify a competitive adsorption of both dyes. RH had higher affinity for B1, although the adsorption capacity changed depending on the concentration of each dye in the mixture. The highest RH adsorption capacity was 3.4 mg g−1 for B1 and 1.45 mg g−1 for Y5, respectively, under a monocomponent condition. It was considered that the interactions in the mechanism proposed for the adsorption process occurred because of the formation of hydrogen bonds between the sulfonate groups of the dyes and the –OH groups present on the surface of the adsorbent. B1 had a higher affinity towards RH because it had one more sulfonate group than Y5. The multiple-response optimization results make it possible to recommend the use of RH beds with low concentrations of B1 and Y5 in the same feed.

【 授权许可】

Unknown