Coating and incorporation of iron oxides into a magnetic-polymer composite to be used as lipase support for ester syntheses

Patrícia D. Mijone, Renata N.Vilas Bôas, Heitor B.S. Bento, Cristiano E.Rodrigues Reis and Heizir F. de Castro

Renewable Energy, 2020, vol. 149, issue C, 1167-1173

Abstract: The utilization of novel materials within the scope of biofuel synthesis has been represented as a significant step in the development of remarkable catalysts. The use of lipases in biodiesel production is often found as a cost-limiting step, as the operational expenditures in recovering such catalysts may lead to unfeasible market expectations. Herein, magnetic-polymer composites were evaluated as supports to immobilize commercial lipase, following the application in ethyl ester syntheses. A matrix of polysiloxane-polyvinyl alcohol (SiO2-PVA) was selected as the polymeric structure, following Fe3O4 and γFe2O3 coating and incorporation assays to the support backbone. Characterization of the produced catalyst support materials was performed via analysis of X-ray powder diffraction, pore size, Scanning electron microscopy, Fourier transform infrared spectroscopy, and vibrating sample magnetometry. Burkholderia cepacia was then immobilized on the matrices, following transesterification of coconut oil with ethanol. The biodiesel samples generated were all within commercial standards, achieving conversion ester contents higher than 96.5%. The purified product samples (biodiesel) were essentially odorless and translucent appearance. Other properties such as density (873–876 kg m−3) and viscosity (3.76–3.93 mm2 s−1) meet the specifications required by the ASTM to be used as a biofuel.

Keywords: Lipase immobilization; Polymer magnetic; Iron oxide; Biodiesel; Burkholderia cepacia (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148119315915
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:149:y:2020:i:c:p:1167-1173

DOI: 10.1016/j.renene.2019.10.100

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().