Loading...
Publication
Sustainable cultivation of Chorella Vulgaris using winery effluents: a study on mixotrophic growth in photobioreactors
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 1.47 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
Every year millions of hectoliters of wastewater are produced in the wine industry, which
translate into high organic loads and high risk of contaminations. This production of waste
conveys a big environmental issue, that can be attenuated via microalgal treatment.
This study, included in the REDWine project, intends to investigate the valorization of these
effluents, by including them in the production of Chlorella vulgaris biomass, that can have
several applications. For this, four experimental setups were conducted, using different types
and designs of photobioreactors (PBR), including a 1700 mL flat panel PBR, 800 mL Bubble
Columns and 400 mL Erlenmeyer flasks.
The results of these four assays showed that, not only it is clear the implementation of red
wine effluents has a positive impact on Chlorella vulgaris, increasing its growth rate (the
addition of sugar from effluent on the medium allows a mixotrophic growth), it also is efficient
on its treatment, due to the decrease on organic load, polyphenolic and mineral composition.
These experiments also helped with the optimization of the growth medium, as they aid to
demonstrate the best effluent concentration (optimal growth at 10% (v/v) and overwhelming
contamination at 30% (v/v)) and the best medium composition with nitrate, phosphate and
magnesium supplementation.
Overall, this study encourages the promotion of sustainable practices, improving and
highlighting the importance of transforming red wine production effluents into high value
products.
Description
Keywords
Chlorella vulgaris Microalgae Mixotrophic Photobioreactor Red Wine Effluents Sustainability