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

Mid-infrared spectroscopy as a tool for real-time monitoring of ethanol absorption in glycols

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Author(s):
Rodrigues, Kaio C. S. [1] ; Veloso, Ivan I. K. [1] ; Ribeiro, Marcelo P. A. [1] ; Cruz, Antonio J. G. [1] ; Badino, Alberto C. [1]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Carlos, Grad Program Chem Engn, CP 676, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: CANADIAN JOURNAL OF CHEMICAL ENGINEERING; v. 99, n. 1, p. 401-409, JAN 2021.
Web of Science Citations: 0
Abstract

Fast, simple, accurate, and inexpensive methods for obtaining analyte concentration data are desirable in the industrial sector. In the present study, the use of Fourier transform mid-infrared (FT-MIR) spectroscopy, combined with partial least squares (PLS) regression, was investigated as a tool for real-time monitoring of processes of ethanol absorption in glycols. Calibration was performed using simple synthetic samples containing ethanol, water, and monoethylene glycol (MEG) or diethylene glycol (DEG). The PLS models presented excellent performance, with correlation coefficients (R-2) close to unity and root-mean-square errors of cross-validation (RMSECV) and prediction (RMSEP) lower than 2% of the calibration data ranges for both analytes (ethanol and water) in both absorbents (MEG and DEG). The monitoring technique developed has potential to be applied in absorption processes and could also be used in other large-scale unit operations, providing information in real time and enhancing process control. (AU)

FAPESP's process: 18/11405-5 - Extractive Ethanol Fermentation in Pneumatic Bioreactors with Removal by CO2 Stripping Integrated to Recovery Units
Grantee:Alberto Colli Badino Junior
Support type: Regular Research Grants
FAPESP's process: 14/26854-9 - Study of ethanol production and recovery process: integration of processes extractive fermentation with carbon dioxide and recovery in absorption column
Grantee:Kaio César da Silva Rodrigues
Support type: Scholarships in Brazil - Doctorate