Enzymatic esterification of pre-treated and untreated acid oil soapstock

• Tipo: Capítulo ou Parte de Livro
• Data: 2018

Autores

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

Livro

Título: Book of proceedings of Wastes: Solutions, Treatments and Opportunities II

Páginas: 241-244

ISBN: 978-1-138-19669-8

Editora: Taylor & Francis

Indexação

ISI Web of Science

Scopus

Outras Informações

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°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. © 2018 Taylor & Francis Group, London, UK.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4