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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Carbon Paste Electrodes Obtained from Organic Waste After a Biodrying Process and Validation in an Electro-Fenton System Towards Alternative Valorization

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Author(s):
A. Z. Vela-Carrillo [1] ; Luis A. Godínez [2] ; J. D. García-Espinoza [3] ; R. J. Martínez [4] ; M. O. Franco-Hernández [5] ; A. B. Piña-Guzman [6] ; M. C. Santos [7] ; F. Robles-Martínez [8] ; I. Robles [9]
Total Authors: 9
Affiliation:
[1] Centro de Investigación y Desarrollo Tecnológico en Electroquímica S. C - México
[2] Universidad Autónoma de Querétaro. Facultad de Química - México
[3] Universidad Autónoma de Querétaro. Facultad de Química - México
[4] Centro de Investigación y Desarrollo Tecnológico en Electroquímica S. C - México
[5] Instituto Politécnico Nacional. Unidad Profesional Interdisciplinaria de Biotecnología - México
[6] Instituto Politécnico Nacional. Unidad Profesional Interdisciplinaria de Biotecnología - México
[7] Federal University of ABC. Center for Natural and Human Sciences - Brasil
[8] Instituto Politécnico Nacional. Unidad Profesional Interdisciplinaria de Biotecnología - México
[9] Centro de Investigación y Desarrollo Tecnológico en Electroquímica S. C - México
Total Affiliations: 9
Document type: Journal article
Source: Journal of the Mexican Chemical Society; v. 67, n. 4, p. 359-370, 2024-04-26.
Abstract

Abstract. The transformation of agricultural waste into activated carbon represents an attractive approach as new and alternative source, but also as a reduction of pollution associated to the degradation of precursors. The organic residues sugarcane (Saccharum officinarum) bagasse-shell, orange (Citrus sinensis) peel-bagasse, and eucalyptus (Eucalyptus globulus) leaves, obtained from a biodrying process were transformed into activated carbons using phosphoric acid as activating agent. The resulting materials were physicochemically characterized and after that, carbonaceous electrodes were prepared to test the feasibility of using them in a discoloration electro-Fenton wastewater treatment process. Orange peel-bagasse biodried precursor transformed into activated carbon showed the highest efficiency when used as the modifier in a carbon paste electrode due to its highest porosity, electroactive area (24.9x10-2 cm2), and roughness (1.21 a.u.), also to its chemical affinity for anionic molecules. These properties, in addition to the capability of electro-sorb iron ions on the surface during the Fenton reaction, allowed a 44 % methyl orange discoloration efficiency. Sugarcane bagasse-peel and eucalyptus leaves biodried residues were also evaluated with efficiencies under 30 %, mainly attributed to intrinsic composition of the precursor materials. (AU)

FAPESP's process: 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination
Grantee:Marcos Roberto de Vasconcelos Lanza
Support Opportunities: Research Projects - Thematic Grants