Batch and continuous production of biolubricant from fusel oil and oleic acid: Lipase screening, reactor system development, and reaction optimization

Autor(es)

Bo, Renata N. Vilas ^[1] ; de Lima, Rosemar ^[1] ; Mendes, Adriano A. ^[2] ; Freitas, Larissa ^[1] ; Bento, Heitor B. S. ^[1] ; de Carvalho, Ana Karine F. ^{[1, 2]} ; de Castro, Heizir F. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Engn Sch Lorena, BR-12602810 Lorena, SP - Brazil

^[2] Univ Fed Alfenas, Inst Chem, BR-37130001 Alfenas, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CHEMICAL ENGINEERING AND PROCESSING; v. 168, NOV 2021.
• Citações Web of Science: 0

Resumo

Fusel oil was used as a source of isoamyl alcohol in the synthesis of biolubricant by esterification with oleic acid catalyzed by different sources of lipase immobilized on poly(styrene/divinylbenzene) copolymer resin. In preliminary tests, Rhizopus oryzae lipase showed satisfactory performance, providing high molar conversion of the starting materials (>90% in 24 h of reaction), and was selected for subsequent experiments. The optimal conditions for isoamyl oleate production by immobilized R. oryzae lipase were 1:1.5 ratio of fusel oil to oleic acid and reaction temperature of 45 degrees C. Continuous runs were carried out in a two-stage packed-bed reactor coupled to a water extraction column filled with molecular sieves. Each reactor stage was loaded with 2.6 g of immobilized lipase and then fed with fusel oil and oleic acid at a 1:1.5 molar ratio in the presence of isooctane. The performance of the proposed system was tested at a space time of 10.2 h, resulting in a mean ester productivity of 292.20 +/- 18.46 mu mol g-1 min-1 and biocatalyst half-life of 179.6 h. The properties of purified samples were in accordance with standard requirements for biolubricants. (AU)

• Processo FAPESP: 16/10636-8 - Da fábrica celular à biorrefinaria integrada Biodiesel-Bioetanol: uma abordagem sistêmica aplicada a problemas complexos em micro e macroescalas
• Beneficiário: Roberto de Campos Giordano
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático