Production nd control of the acrylic acid ester synthesis through lactic acid fermentation / Produção e controle da síntese do éster de ácido acrílico através da fermentação do ácido láctico

AUTOR(ES)

Betânia Hoss Lunelli

DATA DE PUBLICAÇÃO

2010

RESUMO

The continuous development of fermentative processes of low cost and highly efficient to organic acids production to create new opportunities for chemical production from renewable raw materials. The combination of the low cost of lactic acid production from sugarcane fermentation, reduction oil dependence and biocatalysts use, make the production of acrylates and lactates attractive of the viewpoint environmental and also economic, depending on the process. New application of lactic acid, mainly in the production of biodegradable polymer (polylactic acid) and green solvents (ethyl lactate) have attracted interest and has potential to expand the market since economically viable and competitive effectively processes are developed. The aim of this study was the lactic acid production by fermentation, following with its esterification with ethanol to obtain ethyl lactate and subsequent dehydration to the ethyl acrylate synthesis. In order to determine the process ideal conditions, considering the use of renewable raw materials and low cost, initially was selected a lactic acid bacteria adapted to an industrial environment, able to ferment sucrose to lactic acid production. Were developed experimental design for determining the best operating conditions and to determine the kinetics of lactic fermentation which was used in the fermentative process modeling. Lactic acid produced was esterified with etanol from a reactive distillation process for obtaining ethyl lactate. To conclude the work, were evaluated alternative pathways for ethyl lactate dehydration to the ethyl acrylate synthesis

ASSUNTO(S)

destilação fermentação lactatos simulação modelagem matemática fermentation lactates simulation distillation mathematical modeling

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