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Development of a cost-effective microfluidic device to determine biodiesel content in diesel blend

Grant number: 21/12242-5
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): April 01, 2022
Effective date (End): September 30, 2022
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
Principal researcher:Fábio Rodrigo Piovezani Rocha
Grantee:Samara Soares
Supervisor abroad: Luis Fermin Capitan Vallvey
Home Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Research place: Universidad de Granada (UGR), Spain  
Associated to the scholarship:18/07687-5 - Exploitation of novel calibration strategies, digital images and flow analysis for biodiesel quality control, BP.DR

Abstract

The project proposes the development of a cost-effective microfluidic device for determining biodiesel content in diesel blends aiming at in-situ analysis. Some materials will be evaluated for device development, such as silica, glass or polymer chips with channels designed using support of paper, thread or cloth. The analytical method for determining biodiesel content in diesel blends will be based on reaction of the alkyl esters with hydroxylamine in alkaline medium, and further reaction of generated hydroxamate ions with Fe(III) in acidic medium, forming a violet complex. Product detection will be carried out by smartphone-based digital-image photometry associated to a free access application to convert the images to RGB values. The analytical performance of the microfluidic device will be critically evaluated in comparison to other literature methods and accuracy will be assessed in relation to the reference method based on mid-infrared spectroscopy.

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