Unravelling the secrets of a landfill for municipal solid waste (MSW): Lipid-to-biodiesel production by the new strain Chlorella vulgaris DSAF isolated from leachates

The unceasing rise in human population has provoked large environmental damage, essentially in air and water habitats. Microalgae have been deeply investigated regarding wastewater treatment as well as a suitable biofuel feedstock. Nevertheless, process optimization and the search for new local stra...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied phycology 2024-08, Vol.36 (4), p.1805-1822
Main Authors: Suárez-Montes, David, Fernández, Alicia, Tenías, Jorge, Casado, Víctor, González-La Fuente, José Manuel, Rico, José Manuel
Format: Article
Language:English
Subjects:
Algae
Aquatic microorganisms
Biodiesel fuels
Biofuels
Biomedical and Life Sciences
Biotechnology
Chlorella
Chlorella vulgaris
Climatic conditions
Cost analysis
Cost effectiveness
Deprivation
Diesel
Ecology
Environmental degradation
Fatty acids
Freshwater & Marine Ecology
Hazardous wastes
Human populations
Landfill
Landfills
Leachates
Life Sciences
Linoleic acid
Linolenic acid
Lipids
Microalgae
Morphology
Municipal landfills
Municipal solid waste
Municipal waste management
Nutrients
Oleic acid
Parameter identification
Parameter modification
Phytoplankton
Plant Physiology
Plant Sciences
Raw materials
Sodium chloride
Solid waste management
Solid wastes
Strain
Waste disposal sites
Wastewater treatment
Water damage
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The unceasing rise in human population has provoked large environmental damage, essentially in air and water habitats. Microalgae have been deeply investigated regarding wastewater treatment as well as a suitable biofuel feedstock. Nevertheless, process optimization and the search for new local strains are imperative to overcome the cost-effectiveness bottleneck that persist in large-scale technology. Linked to this, micro-diversity studies in landfill leachates have been done. However, there has been no study which analysed specifically the microalgal diversity outside of this less-explored environment to see their biotechnological potential. Hence, a specific study of microalgal diversity present in leachates produced by a non-hazardous waste landfill (mainly for municipal solid waste MSW) located in Asturias (Spain) was done. The new strain Chlorella vulgaris DSAF was isolated and identified based on both morphological and molecular methods. Some parameters based on site-climate conditions were studied to understand C. vulgaris DSAF behaviour. The modification in the lipid content and FAMEs profile in response to the stress caused by the addition of NaCl and nutrient deprivation were also studied. The stress induction produced significant morphological changes when compared to control group (e.g., bigger cell sizes). Specifically, the addition of 25 g L -1 of NaCl achieved an increase of 25% of biomass. Total lipids increased under nutrient deprivation (N, P and NP) from 13 to 34% (w/w). Oleic acid was the most abundant fatty acid, reaching 50% of total FAMEs under NP deprivation conditions. Linoleic acid and α-linolenic acid also showed a moderate increase during NaCl stress. The positive results during calculation of the main biodiesel properties determined that C. vulgaris DSAF would be a potential biodiesel feedstock under different cultivation conditions.
ISSN:0921-8971
1573-5176
DOI:10.1007/s10811-024-03234-w