A process for making a starch-based cationic flocculant for microalgae harvest was studied and the performance of the flocculant was evaluated. Synthesis and characterization of starch-based cationic flocculants for harvesting microalgae a thesis submitted to the faculty of the graduate school. Microbial flocculation is a good choice for harvest of microalgae biomass, which has gained extensive attention there have been carried out massive studies in bacterial flocculation, many bacterial strains with flocculation activity were isolated and different types of bioflocculants were produced.
Although microalgae are considered to be one of the potentially significant feedstock for renewable biofuels, harvesting them efficiently from culture ponds has been a major hurdle. Microalgae flocculation with synthetic and natural polymers, and to evaluate to what extent the manne and brackish environment alters the efficiency of cationic polymers in the flocculation of microalgae. Background: microbial flocculation is a good choice for harvest of microalgae biomass, which has gained extensive attentionthere have been carried out massive studies in bacterial flocculation, many bacterial strains with flocculation activity were isolated and different types of bioflocculants were produced.
The various flocculation potential of different microalgae depends on their different properties, such as the cell wall compositions, the extent and type of excretions, physiological conditions, age and other factors (avinmelech yoram et al, 1982. Algaculture is a form of aquaculture involving the farming of species of algae the majority of algae that are intentionally cultivated fall into the category of microalgae (also referred to as phytoplankton , microphytes , or planktonic algae . Abstract microalga biomass has been recognized as a sustainable bio-product to replace terrestrial biomass in biofuel production the microalga industry has high operating costs. Closed photobioreactor for microalgae biomass production under indoor growth microalgae are sunlight driven cell factories that exploit their co 2 flocculation.
The major techniques presently applied to the harvesting of microalgae include centrifugation, flocculation, filtration, screening, gravity sedimentation, immobilization, flotation and electrophoresis. Small microalgae should be flocculated into larger bodies that can be harvested by one of the methods mentioned above however, the cells' mobility affects the flocculation process, and addition of nonresidual oxidants to stop the mobility should be considered to aid flocculation. Traditional microalgae harvesting techniques consume a lot of energy flocculation, or the formation of aggregates, is an energetically favorable process to collect biomass.
Screening of commercial natural and synthetic cationic polymers for flocculation of freshwater and marine microalgae and effects of molecular weight and charge density. A comprehensive overview on various method of harvesting microalgae according to indian inorganic) are added to microalgae culture to induce flocculation auto. Evaluation of the fertilization properties of algal biomass and keywords: microalgae, biomass harvesting, flocculation, biofertilizer, cold bed methane.
Effect of voltage and electrode material on electroflocculation of scenedesmus acuminatus wang t (2014) microalgae flocculation: impact of flocculant type, algae. Flocculation of the microalgae c sorokiniana, the concentration of 10 ppm chitosan per gram algal biomass resulted in a 99% flocculation percentage at ph 6 on the. Microalgae is typically removed from large volumes of water more easily by flocculation and sedimentation than by filtration [9, 10], but both approaches are under active.