RT Journal Article
T1 Surfactant Selection for a Liquid Foam-Bed Photobioreactor
A1 Janoska, Agnes
A1 Vázquez, María
A1 Janssen, Marcel
A1 Wijffels, René H.
A1 Cuaresma Franco, María
A1 Vílchez Lobato, Carlos
AB novel liquid foam-bed photobioreactor has been shown to hold potential as an innovative technology for microalgae production. In this study, a foam stabilizing agent has been selected which fits the requirements of use in a liquid foam-bed photobioreactor. Four criteria were used for an optimal surfactant: the surfactant should have good foaming properties, should not be rapidly biodegradable, should drag up microalgae in the foam formed, and it should not be toxic for microalgae. Ten different surfactants (nonionic, cationic, and anionic) and two microalgae genera (Chlorella and Scenedesmus) were compared on the above-mentioned criteria. The comparison showed the following facts. Firstly, poloxameric surfactants (Pluronic F68 and Pluronic P84) have acceptable foaming properties described by intermediate foam stability and liquid holdup and small bubble size. Secondly, the natural surfactants (BSA and Saponin) and Tween 20 were easily biodegraded by bacteria within 3 days. Thirdly, for all surfactants tested the microalgae concentration is reduced in the foam phase compared to the liquid phase with exception of the cationic surfactant CTAB. Lastly,only BSA, Saponin, Tween 20, and the two Pluronics were not toxic at concentrations of 10 CMC or higher. The findings of this study indicate that the Pluronics (F68 and P84) are the best surfactants regarding the above-mentioned criteria. Since Pluronic F68 performed slightly better, this surfactant is recommended for application in a liquid foam-bed photobioreactor.
PB Wiley
SN 1520-6033 (electrónico)
YR 2018
FD 2018-02-16
LK https://hdl.handle.net/10272/24962
UL https://hdl.handle.net/10272/24962
LA eng
NO Janoska, A. and Vázquez, M., Janssen, M., Wijffels, R., Cuaresma, M., Vílchez, C. (2018). Surfactant selection for a liquid foam-bed photobioreactor. Biotechnology Progress 34(3): 711-720
NO This project has received funding from the European Union’s Seventh Framework Programme for research, technologicaldevelopment and demonstration under grant agreement No 613588. http://www.miraclesproject.eu.
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026