Bio-contamination Biofuel production 1 Biofuels 1 Biomass productions 1 Chemical method 1 Chlorella 1 Ciliates 1 Ciliophora 1 Contamination 1 Effective concentration 1 Flagellates 1 Mass cultivation 1 Mass cultures 1 Mastigophora (flagellates) 1 Poterioochromonas 1 Predator 1 Raceway pond 1 Sodium dodecylbenzene sulfonate 1 Surface active agents 1 Surfactant 1 biofuel 1 ciliate 1 concentration (composition) 1 cultivation 1 flagellate 1 microalga 1 predator 1 surfactant 1 zooplankton 1