Enzymatic esterification of pre-treated and untreated acid oil soapstock

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2018

Autores

Borges, J (Autor) Outra; Alvim Ferraz, C (Autor) Outra; Manuel Fonseca Almeida (Autor) FEUP; Joana Dias (Autor) FEUP; Budzaki, S (Autor) Outra

Ata de Conferência Internacional

Título: WASTES - SOLUTIONS, TREATMENTS AND OPPORTUNITIES II

Páginas: 241-244

4th International Conference on Wastes - Solutions, Treatments and Opportunities

Univ Porto, Fac Engn, Porto, PORTUGAL, SEP 25-26, 2017

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00P-NKS

DOI: 10.1201/9781315206172-38

Abstract (EN): The soapstock oil presents high Free Fatty Acid (FFA) content, being potentially a sustainable alternative feedstock for biodiesel production. In the present work, enzymatic esterification using a suspension of Thermomyces lanuginosus lipase was conducted on pre-treated and untreated acid oil from soapstock derived from the refining of vegetable oil mixtures. The enzyme suspension was prepared by mixing it with a 1 M phosphate buffer (1: 10 V/V, enzyme: buffer). Esterification was conducted in an orbital shaking incubator at 40.0 degrees C using a molar ratio of acid to methanol of 1: 3, during 24 h at 200 rpm; monitoring was performed at 0, 7 and 24 h. Around 80% FFA reduction was obtained using raw and pre-treated oil, showing that the use of suspended enzyme avoids the need for pretreatment. Fatty Acid Methyl Ester content was determined, indicating that both esterification and transesterification reactions occurred.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4