Alternative raw materials to produce biodiesel through alkaline heterogeneous catalysis

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Edgar M. Sánchez Faba (Author) Other; Gabriel O. Ferrero (Author) Other; Joana M.Dias (Author) FEUP; Griselda A. Eimer (Author) Other

Journal

Title: Catalysts

Vol. 9 No. 8

Pages: 1-14

ISSN: 2073-4344

Publisher: MDPI

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 7 Citations

Associated Projects

LEPABE - Projeto Estratégico do LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Other information

Authenticus ID: P-00R-0Y7

DOI: 10.3390/catal9080690

Abstract (EN): Recent research focuses on new biodiesel production and purification technologies that seek a carbon-neutral footprint, as well as cheap, renewable and abundant raw materials that do not compete with the demand for food. Then, many attractive alternatives arise due to their availability or low-cost, such as used cooking oil, Jatropha oil (non-edible) or byproducts of vegetable oil refineries. Due to their composition and the presence of moisture, these oils may need a pretreatment to reach the established conditions to be used in the biodiesel production process so that the final product complies with the international quality standards. In this work, a solid catalyst based on 10 wt % sodium oxide supported on mesoporous silica SBA-15, was employed in the transesterification of different feedstocks (commercial sunflower and soybean oil, used cooking oil, acid oil from soapstock and Jatropha hieronymi oil) with absolute methanol in the following reaction conditions-2-8 wt % catalyst, 14:1 methanol to oil molar ratio, 60 degrees C, vigorous magnetic stirring and 5 h of reaction. In this way, first- and second-generation biodiesel was obtained through heterogeneous catalysis with methyl ester yields between 52 and 97 wt %, depending on the free fatty acid content and the moisture content of the oils.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14