BRPI0500321A - vacuum extractive fermentation process for ethanol production - Google Patents

vacuum extractive fermentation process for ethanol production

Info

Publication number
BRPI0500321A
BRPI0500321A BRPI0500321A BRPI0500321A BR PI0500321 A BRPI0500321 A BR PI0500321A BR PI0500321 A BRPI0500321 A BR PI0500321A BR PI0500321 A BRPI0500321 A BR PI0500321A
Authority
BR
Brazil
Prior art keywords
ethanol
conditions
fermentation process
medium
vacuum
Prior art date
Application number
Other languages
Portuguese (pt)
Inventor
Francisco Maugeri Jr
Daniel Ibraim Pires Atala
Original Assignee
Unicamp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unicamp filed Critical Unicamp
Priority to BRPI0500321 priority Critical patent/BRPI0500321A/en
Publication of BRPI0500321A publication Critical patent/BRPI0500321A/en

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Abstract

"PROCESSO FERMENTATIVO EXTRATIVO A VáCUO PARA PRODUçãO DE ETANOL". é um processo de obtenção de solução de etanol através da extração a vácuo do sistema fermentativo. O microrganismo utilizado no processo fermentativo é a levedura Saccharomyces Cerevisiae sendo usado como substrato, melaço de cana de açúcar diluído em água. A utilização de meios fermentativos com alta concentração de substrato é de grande interesse para a indústria, pois diminuem de forma significativa o volume das dornas e o volume de vinhaça quando comparado com as condições atuais. Além disso, devido a grandes quantidades de etanol no meio, consome menos energia necessária no processo de extração. Porém, esta alta concentração de etanol inibe o processo fermentativo, surgindo assim, a necessidade do etanol ser retirado do meio logo que é produzido. Com a utilização do tanque flash a vácuo, o sistema opera em condições favoráveis, pois o teor de etanol presente no meio está abaixo da inibição, mas em concentração suficiente para inibir contaminações. Nestas condições, a produtividade do sistema é elevada quando comparada com as condições atuais. Este processo permite trabalhar com alta concentração de células no reator, aumentando assim a velocidade de conversão e conseqüentemente diminuindo o tempo de residência. Para garantir a funcionalidade do processo fermentativo extrativo é utilizado um sistema de aquisição de dados e controle. Através do sistema de aquisição e controle é possível manter o processo dentro de condições pré-estabelecidas visando a maximização do rendimento, da produtividade e da conversão. O software supervisório, desenvolvido em LabView, terá a função de monitorar e controlar o processo através de instrumentos virtuais instalados em computador e registrar informações e alarmes de processo através de gráficos, planilhas, e-mail, página de internet e mensagens pelo celular."EXTRACTIVE FEMALE PROCESS FOR ETHANOL PRODUCTION". It is a process of obtaining ethanol solution by vacuum extraction of the fermentative system. The microorganism used in the fermentation process is Saccharomyces Cerevisiae yeast being used as substrate, sugarcane molasses diluted with water. The use of fermentative media with high substrate concentration is of great interest to the industry, as they significantly decrease the volume of vinasse and vinasse volume when compared to current conditions. In addition, due to the large amounts of ethanol in the medium, it consumes less energy required in the extraction process. However, this high concentration of ethanol inhibits the fermentation process, thus emerging the need for ethanol to be removed from the medium as soon as it is produced. Using the vacuum flash tank, the system operates under favorable conditions as the ethanol content present in the medium is below inhibition but in sufficient concentration to inhibit contamination. Under these conditions, system productivity is high compared to current conditions. This process allows to work with high concentration of cells in the reactor, thus increasing the conversion speed and consequently reducing the residence time. To ensure the functionality of the extractive fermentation process, a data acquisition and control system is used. Through the acquisition and control system it is possible to keep the process within pre-established conditions aiming at maximizing yield, productivity and conversion. The supervisory software, developed in LabView, will monitor and control the process through computer-installed virtual instruments and record process information and alarms through graphs, spreadsheets, e-mail, web page and mobile messages.

BRPI0500321 2005-01-28 2005-01-28 vacuum extractive fermentation process for ethanol production BRPI0500321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BRPI0500321 BRPI0500321A (en) 2005-01-28 2005-01-28 vacuum extractive fermentation process for ethanol production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BRPI0500321 BRPI0500321A (en) 2005-01-28 2005-01-28 vacuum extractive fermentation process for ethanol production

Publications (1)

Publication Number Publication Date
BRPI0500321A true BRPI0500321A (en) 2006-09-19

Family

ID=36999703

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0500321 BRPI0500321A (en) 2005-01-28 2005-01-28 vacuum extractive fermentation process for ethanol production

Country Status (1)

Country Link
BR (1) BRPI0500321A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8304588B2 (en) 2007-12-27 2012-11-06 Gevo, Inc. Recovery of higher alcohols from dilute aqueous solutions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8614077B2 (en) 2007-12-23 2013-12-24 Gevo, Inc. Recovery of higher alcohols from dilute aqueous solutions
US8304588B2 (en) 2007-12-27 2012-11-06 Gevo, Inc. Recovery of higher alcohols from dilute aqueous solutions

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according art. 34 industrial property law
B07A Technical examination (opinion): publication of technical examination (opinion)
B15K Others concerning applications: alteration of classification

Free format text: AS CLASSIFICACOES ANTERIORES ERAM: C12P 7/14 , C12R 1/865

Ipc: C12P 7/06 (2006.01), B01D 3/06 (2006.01), C12P 7/0

B09B Decision: refusal
B12B Appeal: appeal against refusal