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Palm oil mill effluent for lipid production by the diatom thalassiosira pseudonana

Karthick Murugan, Palanisamy and Gaanty Pragas, Maniam and Mohd Hasbi, Ab. Rahim and Natanamurugaraj, Govindan (2022) Palm oil mill effluent for lipid production by the diatom thalassiosira pseudonana. Fermentation, 8 (1). pp. 1-16. ISSN 2311-5637

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Abstract

Biomass and lipid production by the marine centric diatom Thalassiosira pseudonana were characterized in media based on palm oil mill effluent (POME) as a source of key nutrients. The optimal medium comprised 20% by volume POME, 80 µM Na2SiO3, and 35 g NaCl L−1 in water at pH ~7.7. In 15-day batch cultures (16:8 h/h light–dark cycle; 200 µmol photons m−2 s−1, 26 ± 1◦C) bubbled continuously with air mixed with CO2 (2.5% by vol), the peak concentration of dry biomass was 869 ± 14 mg L−1 corresponding to a productivity of ~58 mg L−1 day−1 . The neutral lipid content of the biomass was 46.2 ± 1.1% by dry weight. The main components of the esterified lipids were palmitoleic acid methyl ester (31.6% w/w) and myristic acid methyl ester (16.8% w/w). The final biomass concentration and the lipid content were affected by the light–dark cycle. Continuous (24 h light) illumination at the above-specified irradiance reduced biomass productivity to ~54 mg L−1 day−1 and lipid content to 38.1%.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Algal biodiesel; Diatom lipids; Palm oil mill effluent; Thalassiosira pseudonana
Subjects: Q Science > QD Chemistry
Q Science > QP Physiology
T Technology > T Technology (General)
Faculty/Division: Faculty of Industrial Sciences And Technology
Institute of Postgraduate Studies
Depositing User: Mr Muhamad Firdaus Janih@Jaini
Date Deposited: 15 Mar 2022 08:03
Last Modified: 15 Mar 2022 08:03
URI: http://umpir.ump.edu.my/id/eprint/33343
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