Recovery of byproducts from the rice milling industry for biofuel production

• Type: Article in International Conference Proceedings Book
• Date: 2020

Authors

Costa, ET (Author) Other; Manuel Fonseca Almeida (Author) FEUP; Joana Dias (Author) FEUP; Alvim Ferraz, C (Author) Other

Conference proceedings International

Title: Wastes: Solutions, Treatments and Opportunities III - Selected papers from the 5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019

Pages: 326-332

5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019

4 September 2019 through 6 September 2019

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: P-00R-RV2

DOI: 10.1201/9780429289798-52

Abstract (EN): In this study, the efficiency of enzymatic esterification and homogenous acid esterification for the reduction of Free Fatty Acid (FFA) content of acid rice bran oil (47 mg KOH g¿1 ) was studied. Further, alkaline transesterification of the pretreated oil mixed with sunflower oil (to achieve FFA content ¿2%) was conducted to maximize fatty acid methyl esters (FAME) production. Homogeneous acid esterification was conducted at respectively 65¿ C and 45¿ C, using 2 wt.% and 4 wt.% of H2 SO4 as catalyst and 9:1 methanol:oil molar ratio. Enzymatic esterification was performed at 35¿ C using a 6:1 molar ratio of methanol:oil and 5 wt.% of catalyst. Homogenous acid esterification allowed to achieve the highest acid value reduction (92%), although enzymatic pretreatment alone allowed to obtain the highest FAME content (86 wt.%) compared to acid catalyzed process (41 wt.%). The obtained results show potential of this alternative raw material for bioenergy purposes. © 2020 Taylor & Francis Group, London, UK.

Language: English

Type (Professor's evaluation): Scientific