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- Title
Enhancing the biomass production of microalgae by mixotrophic cultivation using virgin coconut oil mill effluent.
- Authors
Dewi, Resti Nurmala; Mahreni; Azimatun Nur, M. M.; Siahaan, Al Ansor; Ardhi, Arbayu Candra
- Abstract
Skim is a major by-product of the virgin coconut oil (VCO) industry consisting of nutrients and is currently discharged to the environment as waste. Hence, this research aimed to utilize skim as a medium for Botryococcus braunii and Chlorella vulgaris growth. The effect of organic carbon resourced from glucose and glycerol on biomass was also investigated at certain concentrations with intervals 100:0 to 0:100 (%). Results indicated that Botryococcus braunii and Chlorella vulgaris cultivated under 20% VCO mill effluent gave the highest biomass production, which accounts for 1.69 g/L and 5.34 g/L; 89.40% and 86.70% COD reduction efficiency. Whereas, mixotrophic condition showed a positive trend for Botryococcus braunii at 80:20 (glucose:glycerol) with 5.60 g/L biomass production and 97.64% COD removal efficiency. Vice versa, the addition of glucose:glycerol gave an inhibitory impact on Chlorella vulgaris as the biomass production was merely 1.66 g/L with COD efficiency 94.03%.
- Subjects
COCONUT oil; BOTRYOCOCCUS braunii; OIL mills; CHLORELLA vulgaris; MICROALGAE
- Publication
Environmental Engineering Research, 2023, Vol 28, Issue 2, p1
- ISSN
1226-1025
- Publication type
Article
- DOI
10.4491/eer.2022.059