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Production, feeding and storage of Tetraselmis tetrathele paste by electrolytic flocculation

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Date
2023-02
Author
Villa-Franco, Annie
Teves, Christine Marie L.
Dato-on, Knessa Louie G.
de Jesus-Ayson, Evelyn Grace T.
Usero, Roselyn
de la Peña, Milagros R.
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Abstract
An innovative microalgae harvesting technique using electroflocculation was carried out at different voltage treatments (4, 7, and 9 V) using a fabricated voltage regulator and compared with harvesting by electroflocculation at 12 V using a car battery to efficiently electroflocculate Tetraselmis tetrathele. This study was conducted to determine the ideal voltage settings that could improve the quality of harvested paste in terms of nutritional value and metal contamination for its later use in aquaculture. The use of 7 V achieved low Pb content producing the best harvest biomass (1.4 kg, 87 min) which is comparable to the harvest biomass (1.7 kg, 68 min) using a 12 V car battery. Storage of T. tetrathele paste is best done in a chiller (2 ± 1 °C) rather than a freezer (-20 ± -4 °C) for ease in reactivation and maintaining higher cell viability for later use as a starter in aquaculture. Storage in a chiller allows T. tetrathele paste to be resuspended after six months and used as a starter culture.
Keywords
Electro-flocculation Microalgal paste Microalgae harvesting Pb content Tetraselmis tetrathele
URI
http://hdl.handle.net/10862/6405
Suggested Citation
Villa-Franco, A., Teves, C. M. L., Dato-on, K. L. G., de Jesus-Ayson, E. G. T., Usero, R., & de la Peña, M. R. (2023). Production, feeding and storage of Tetraselmis tetrathele paste by electrolytic flocculation. Journal of Applied Phycology, 35(1), 85-90. https://doi.org/10.1007/s10811-022-02887-9 
DOI
10.1007/s10811-022-02887-9
Subject
flocculation ASFA; feeding ASFA; lead ASFA; storage ASFA; Algae ASFA; production ASFA; microalgae AGROVOC; Chlorophyceae AGROVOC; pastes AGROVOC
Taxonomic term
Tetraselmis tetrathele GBIF
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  • AQD Journal Articles [1179]

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