Concentrating second-generation lactic acid from sugarcane bagasse via hybrid short path evaporation: Operational challenges

Autor(es)

de Oliveira, Regiane Alves ^[1] ; Komesu, Andrea ^[2] ; Vaz Rossell, Carlos Eduardo ^[3] ; Wolf Maciel, Maria Regina ^[1] ; Maciel Filho, Rubens ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas Unicamp, Sch Chem Engn, Lab Optimizat Design & Adv Proc Control, 500 Albert Einstein AV, BR-13083852 Campinas, SP - Brazil

^[2] Fed Univ Sao Paulo UNIFESP, Dept Marine Sci, Dept Ciencias Mar, 144 Carvalho de Mendonca St, BR-11070100 Santos, SP - Brazil

^[3] Univ Campinas Unicarnp, Interdisciplinary Ctr Energy Planning, 330 Cora Coralina St, BR-13083896 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Separation and Purification Technology; v. 209, p. 26-31, JAN 31 2019.
• Citações Web of Science: 2

Resumo

Production of lactic acid (LA) from lignocellulosic materials has become increasingly prominent in the market. However, for industrial scale to be reached, several challenges in second-generation lactic acid production must be overcome. Besides obstacles such as the hydrolysis process, one of the major challenges of the lactic acid industry is the separation and purification process. This study evaluates the separation of lactic acid produced from hemicellulose hydrolysate from sugarcane bagasse using a Hybrid Short Path Evaporation (HSPE) system. Results showed that a lactic acid concentration of 3.1 times the feed concentration (27.85 g/L) is achievable. Three operational parameters were studied: evaporator temperature, internal condenser temperature and feed flow rate. Maximum lactic acid concentration was 86.69 g/L with an evaporator temperature of 120 degrees C, condenser temperature of 13 degrees C, and feed flow rate of 8.27mL/min. Separation of LA from hemicellulosic sugars using HSPE was a more difficult process than separation of LA from 6-carbon sugars. (AU)

• Processo FAPESP: 13/26290-5 - Otimização e produção de ácido lático a partir de cana-de-açúcar
• Beneficiário: Regiane Alves de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto