Lipids of interest for biodiesel production obtained from diatom strains with pristine and highly polluted origins
by Luz Etcheverry-Boneo; Cristian Ishiguro; Georgina Wigdorovitz; Nicolás Pourtale; Judith Lacava; Valentina S. Vela; Melisa S. Olivelli
International Journal of Environment and Waste Management (IJEWM), Vol. 28, No. 2, 2021

Abstract: Diatoms are able to enhance their lipids production when subjected to stress factors as pollutants. In this study, diatoms were isolated from two sampling sites: a pristine site and a highly polluted river. This work aims to assess differences in biodiversity of diatoms samples and to isolate strains from different environments to compare the amount and characteristics of lipids with potential in enhanced biodiesel production. Biodiversity was compared qualitatively; strains were isolated and assessed for lipids production and profile; and frustules after lipids extraction were studied by SEM and BET. Five genus were isolated and cultured for lipids production: Nitzschia sp., Frustulia sp. and Diadesmis sp. from Río Luján; and Pinnularia sp. and Cyclotella sp. from Ribera Norte respectively. Isolated strains presented yields near 50% for lipids production, being Nitzschia sp. the strain with the highest amount of neutral lipids (68%). TAG profiles were abundant in medium-chain fatty acids. Frustules suffered ruptures in their structure, increasing their BET surface. This study represents a novel approach, as diatoms from different environments are isolated and compared for biodiesel production; as well as a possible reuse of the frustules residues is postulated.

Online publication date: Mon, 23-Aug-2021

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Environment and Waste Management (IJEWM):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com