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Title |
Αξιοποίηση των αποβλήτων τυροκομείων και παραγωγή βιομάζας υψηλής διατροφικής αξίας με χρήση του μικροφύκους Chlorella sp. |
Alternative Title |
Valorization of cheese-whey wastewaters and production of high-nutritional value biomass using the green microalga Chlorella sp. |
Author
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Τσολακίδη, Αγγελική
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Thesis advisor
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Γανωτάκης, Δημήτριος
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Abstract |
In the present thesis, a methodology for Chlorella biomass production using primary
and secondary cheese whey wastewaters, was investigated. This cheese whey was originated
from sheep and goat milk.
Results of this study proved that cheese whey waste-waters have the potential to be
used as substrates in culture media for microalgae using the appropriate experimental
approach. Initial experiments were performed in small culture volume. In the primary fraction
(rich in nutrients), microalgae exhibited high biomass production and photosynthetic
efficiency. In the secondary fraction, growth was limited by the high salinity of the wastewaters and cell growth was only observed in diluted cheese whey wastewaters. For this
purpose, these fractions were mixed together in various volumetric ratios, in order to decrease
the salt content of the secondary. This approach led to an increase in both biomass production
and photosynthetic efficiency to comparable levels with control cultures. In the last stage,
microalgal growth was studied in pilot laboratory scale bioreactors (1000 mL volume).
Cultivation in higher volumes presented comparable results to those of initial experiments.
The dry biomass collected had been enriched in protein and polyunsaturated fatty acids
content. In all cases the only pre-treatment performed was the autoclaving of the waste-waters
and the addition of a trace mineral solution.
The outcomes of the present thesis clearly show that cheese whey waste-waters have
the potential to be used as a proper nutrient substrate for the cultivation of microalgae with
their simultaneous bioremediation and high-value biomass production.
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Language |
Greek |
Subject |
Growth |
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Photosynthesis |
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Primary cheese whey, |
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Secondary cheese whey |
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Ανάπτυξη |
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Απόβλητα τυροκομείων |
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Βιομάζα |
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Φωτοσύνθεση |
Issue date |
2022-11-24 |
Collection
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School/Department--School of Sciences and Engineering--Department of Chemistry--Graduate theses
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Type of Work--Graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/e/7/a/metadata-dlib-1665997498-634907-28241.tkl
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Views |
237 |