Multivariate Determination of Total Sugar Content and Ethanol in Bioethanol Production Using Carbon Electrodes Modified with MWCNT/MeOOH and Chemometric Data Treatment

Author(s)

de Sa, Acelino Cardoso ^{[1, 2]} ; Cipri, Andrea ^[2] ; Gonzalez-Calabuig, Andreu ^[2] ; Stradiotto, Nelson Ramos ^[1] ; del Valle, Manel ^[2]

Affiliation

^[1] Univ Estadual Paulista UNESP, Inst Chem, Dept Analyt Chem, 55 Rua Francisco Degni, BR-14800060 Araraquara, SP - Brazil

^[2] Univ Autonoma Barcelona, Dept Chem, Sensors & Biosensors Grp, Edifici Cn, E-08193 Barcelona - Spain

• Document type: Journal article
• Source: Electroanalysis; v. 30, n. 8, p. 1688-1697, AUG 2018.
• Web of Science Citations: 1

Abstract

This work reports the characterization and application of a voltammetric electronic tongue using an array of glassy carbon electrodes modified with multi-walled carbon nanotubes containing metal (Pd, Au, Cu) and oxy-hydroxide nanoparticles (MetalsOOH of Ni, Co) towards the determination of total sugar content in products related with sugarcane-bioethanol production. The prediction model based on Artificial Neural Networks (ANN) has given satisfactory results for the carbohydrate sum and the obtained response had shown an adequate accuracy. Voltammetric data was first adapted for the computation using the Fast Fourier transform, and results from the electronic tongue approach were compared with use of different electrodes alone. Final performance was better using uniquely the Ni oxy-hydroxide modified electrode, especially in the quantification of ethanol, a side-effect of counter-balancing its interference. (AU)

• FAPESP's process: 12/00258-5 - Development of new methods for determination of sugars, furanic aldehydes and ironic acids from lignocellulosic materials derivatives of cane sugar
• Grantee: Nelson Ramos Stradiotto
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
• FAPESP's process: 11/19289-5 - Determination of sugar in bagasse and straw of cane sugar by high performance liquid chromatography with electrochemical detection using electrode modified carbon nanotubes with metal oxides
• Grantee: Acelino Cardoso de Sá
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 14/15557-3 - Determination of carbohydrates in sugarcane bagasse employing a voltammetric electronic tongue formed by nickel oxy-hydroxide/MWCNT modified electrodes
• Grantee: Acelino Cardoso de Sá
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate