Study of ethanol production and recovery process: integration of processes extractive fermentation with carbon dioxide and recovery in absorption column

• Grant number: 14/26854-9
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: July 01, 2015
• End date: February 28, 2019
• Field of knowledge: Engineering - Chemical Engineering - Industrial Operations and Equipment for Chemical Engineering
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Alberto Colli Badino Junior
• Grantee: Kaio César da Silva Rodrigues
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

The low ethanol content reached in wine is the main restriction of the alcoholic fermentation process in the distilleries. Ethanol is accumulated in the fermentation broth and reaches toxic levels, acting as a noncompetitive inhibitor of metabolism. One way to overcome this problem is to apply the gas stripping technique for the removal of ethanol during fermentation. In this project, integration of processes extractive fermentation with carbon dioxide and recovery in absorption column is proposed as a way to reduce product inhibition and increase overall ethanol productivity and production in the process. Preliminarily, stripping and recovery processes will be studied using aqueous solutions of ethanol. Investigation will be made of the influence of solution temperature (T), specific carbon dioxide flow rate (f) and ethanol initial concentration (CE0) on stripping process performance. Concerning the ethanol recovery stage in absorption column, evaluation will be made from types and concentrations of solvents, types of fillings, the relationship between mass flow rate (solvent/gas) and operating temperatures that lead to increased values of ethanol recovery efficiency. Conventional, integrated extractive and nonintegrated extractive fermentations will be carried out in bubble column reactor 2 L in batch, fed batch and continuous operation modes. During the cultivations data of substrate consumption data (CS), cell growth (CX) and ethanol production (CE) will be estimated. In addition, modeling and simulation will enable analyze and validate the process from experimental data. (AU)

Scientific publications

(5)

(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)

RODRIGUES, KAIO C. S.; VELOSO, IVAN I. K.; CRUZ, ANTONIO J. G.; BERNARDO, ANDRE; BADINO, ALBERTO C.. Ethanol Recovery from Stripping Gas Mixtures by Gas Absorption: Experimental and Modeling. ENERGY & FUELS, v. 33, n. 1, p. 369-378, JAN 2019. (14/26854-9, 18/11405-5)

RODRIGUES, KAIO C. S.; VELOSO, IVAN I. K.; RIBEIRO, MARCELO P. A.; CRUZ, ANTONIO J. G.; BADINO, ALBERTO C.. Mid-infrared spectroscopy as a tool for real-time monitoring of ethanol absorption in glycols. CANADIAN JOURNAL OF CHEMICAL ENGINEERING, v. 99, n. 1, p. 401-409, JAN 2021. (18/11405-5, 14/26854-9)

RODRIGUES, KAIO C. S.; SONEGO, JORGE L. S.; BERNARDO, ANDRE; RIBEIRO, MARCELO P. A.; CRUZ, ANTONIO J. G.; BADINO, ALBERTO C.. Real-Time Monitoring of Bioethanol Fermentation with Industrial Musts Using Mid-Infrared Spectroscopy. Industrial & Engineering Chemistry Research, v. 57, n. 32, p. 10823-10831, AUG 15 2018. (14/26854-9, 12/50046-4)

VELOSO, IVAN I. K.; RODRIGUES, KAIO C. S.; SONEGO, JORGE L. S.; CRUZ, ANTONIO J. G.; BADINO, ALBERTO C.. Fed-batch ethanol fermentation at low temperature as a way to obtain highly concentrated alcoholic wines: Modeling and optimization. Biochemical Engineering Journal, v. 141, p. 60-70, JAN 15 2019. (18/11405-5, 14/26854-9)

RODRIGUES, KAIO C. S.; SONEGO, JORGE L. S.; CRUZ, ANTONIO J. G.; BERNARDO, ANDRE; BADINO, ALBERTO C.. Modeling and simulation of continuous extractive fermentation with CO2 stripping for bioethanol production. CHEMICAL ENGINEERING RESEARCH & DESIGN, v. 132, p. 77-88, APR 2018. (12/50046-4, 14/26854-9)