Glycerolysis of two high free fatty acid waste materials for biodiesel production

• Type: Article in International Conference Proceedings Book
• Date: 2015

Authors

E. T. Costa (Author) Other; M. F. Almeida (Author) FEUP; J. M. Dias (Author) FEUP; A. Matos (Author) Other

Conference proceedings International

Title: Wastes: Solutions, Treatments and Opportunities

Pages: 55-60

3rd Edition of the International Conference on Wastes: Solutions, Treatments and Opportunities

Viana do Castelo, Portugal, 14-16 September 2015

Indexing

Scopus - 3 Citations

Scientific classification

CORDIS: Technological sciences

FOS: Engineering and technology

Associated Projects

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Other information

Authenticus ID: P-00K-1C8

Abstract (EN): Biodiesel is generally produced from edible vegetable oils; however, some waste materials with high free fatty acids (FFA) content might be used if an adequate pretreatment technology is employed. The present study evaluated the use of glycerolysis for the pre-treatment of two high FFA waste materials, for further biodiesel production. The raw-materials were sludges, one from an urban wastewater treatment (sample one - acid value around 140 mg KOH g¿1) and one from a wastewater treatment of the dairy industry (sample two - acid value around 4.5 mg KOH g¿1). Biodiesel was further produced by alkaline transesterification. The glycerolysis (1:2 glycerol:oil (w/w), 200¿C, 100 rpm, 2 h) allowed to decrease between 85% to 96% the FFA content of the raw-materials. The best results were obtained for sample two; however, although with effective pretreatment, transesterification led to a maximum product purity of 67% and relatively low product yields. © 2015 Taylor & Francis Group, London.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6