Your browser doesn't support javascript.
loading
Corncob as an effective, eco-friendly, and economic biosorbent for removing the azo dye Direct Yellow 27 from aqueous solutions.
Berber-Villamar, Nayda Karina; Netzahuatl-Muñoz, Alma Rosa; Morales-Barrera, Liliana; Chávez-Camarillo, Griselda Ma; Flores-Ortiz, César Mateo; Cristiani-Urbina, Eliseo.
Afiliação
  • Berber-Villamar NK; Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Ingeniería Bioquímica, Unidad Profesional Adolfo López Mateos, Delegación Gustavo A. Madero, Ciudad de México, México.
  • Netzahuatl-Muñoz AR; Universidad Politécnica de Tlaxcala, Colonia San Pedro Xalcaltzinco, Tepeyanco, Tlaxcala, México.
  • Morales-Barrera L; Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Ingeniería Bioquímica, Unidad Profesional Adolfo López Mateos, Delegación Gustavo A. Madero, Ciudad de México, México.
  • Chávez-Camarillo GM; Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Ingeniería Bioquímica, Unidad Profesional Adolfo López Mateos, Delegación Gustavo A. Madero, Ciudad de México, México.
  • Flores-Ortiz CM; Unidad de Biotecnología y Prototipos, Facultad de Estudios Superiores-Iztacala, Universidad Nacional Autónoma de México, Los Reyes Iztacala, Tlalnepantla, Estado de México, México.
  • Cristiani-Urbina E; Laboratorio Nacional en Salud, Facultad de Estudios Superiores-Iztacala, Universidad Nacional Autónoma de México, Los Reyes Iztacala, Tlalnepantla, Estado de México, México.
PLoS One ; 13(4): e0196428, 2018.
Article em En | MEDLINE | ID: mdl-29698442
The corncob is an agricultural waste generated in huge quantities during corn processing. In this paper, we tested the capacity of corncob particles for water purification by removing the azo dye Direct Yellow 27 (DY27) via biosorption. The biosorption process was investigated in terms of the kinetics, equilibria, and thermodynamics. Batch biosorption studies showed that the biosorption performance has strong inverse correlations to the solution pH and the corncob particle size, and it increases quickly with increasing contact time and initial dye concentration. The pseudo-second-order kinetic model provides the best fit to the experimental data, whereas the Redlich-Peterson isotherm model is most suitable for describing the observed equilibrium biosorption. The biosorption process is exothermic, spontaneous, and physisorption in character. Fourier transform infrared (FTIR) spectroscopy and confocal scanning laser microscopy (CSLM) studies suggest that lignocellulose and proteins play key roles in the biosorption of DY27 from aqueous solutions by corncob. Furthermore, after biosorption onto the corncob, the dye can be effectively desorbed using 0.1 M NaOH solution. Therefore, the corncob can be used as a promising biosorbent to remediate DY27-contaminated water and wastewater.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Compostos Azo / Purificação da Água / Zea mays / Corantes / Naftalenos Tipo de estudo: Health_economic_evaluation Idioma: En Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Compostos Azo / Purificação da Água / Zea mays / Corantes / Naftalenos Tipo de estudo: Health_economic_evaluation Idioma: En Ano de publicação: 2018 Tipo de documento: Article