Development of composite sensors with carbon nanotubes and molecularly imprinted polymers for xylose and arabinose determination into sugarcane bagasse hydrolysates

• Grant number: 17/09492-4
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2017
• End date: December 09, 2019
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Leonardo Lataro Paim
• Grantee: Miguel Sales Porto de Sousa
• Host Institution: Universidade Estadual Paulista (UNESP). Campus de Rosana. Rosana , SP, Brazil
• Associated scholarship(s): 18/25830-0 - Development of composite sensors with carbon nanotubes and molecularly imprinted polymers for xylose and arabinose determination into sugarcane bagasse hydrolysates, BE.EP.IC

Abstract

One means of decreasing dependence in relation to fossil fuels, given the environmental impacts and the recognition that world oil reserves are slowly ending, several countries are investing in the production of second generation bioethanol. This fuel has become attractive because it can be produced from bagasse, which is a residue of sugarcane. Thus, it is extremely important to evaluate the efficiency and optimization of different processes of second generation bioethanol production, mainly in the compositional analysis of the hydrolysates from the pretreatment of lignocellulosic biomass. Therefore, the present project has the objective of developing electrochemical sensors constituted by graphite/paraffin composite electrodes and multi-walled carbon nanotubes (MWCNTs), modified with molleculary imprinted polymers. An excellent low cost option, which allows performing rapid analysis with high selectivity, sensitivity and with great possibility of miniaturization and field application. MIPs will be prepared for the quantification of pentoses (xylose and arabinose) obtained from lignocellulosic matrices. The results obtained with the sensors based on MIPs should be evaluated by the SEM, EDS, CV and Impedance techniques. In addition, MIP sensors must have excellent reproducibility and direct application to the hydrolysates of the lignocellulosic material, with the possibility of simultaneous and rapid analyzes in miniaturized and portable systems, as well as the online application of the sensors in second generation ethanol production processes. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SOUSA, MIGUEL S. P.; DE SA, ACELINO C.; DE OLIVEIRA, JOAO P. J.; DA SILVA, MICHAEL J.; SANTOS, RENIVALDO J.; PAIM, LEONARDO L.. Impedimetric Sensor for Pentoses Based on Electrodeposited Carbon Nanotubes and Molecularly Imprinted poly-o-phenylenediamine. ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, v. 9, n. 4, APR 13 2020. (17/09123-9, 17/09492-4)