Validation of a cationic polyacrylamide flocculant for the harvesting fresh and seawater microalgal biomass

Nguyen, Dinh Duc; Labeeuw, Leen; Commault, Audrey S.; Emmerton, Benjamin; Ralph, Peter J.; Johir, Abu Hasan; Ngo, Huu‐Hao

doi:10.1016/j.eti.2019.100466

Cited by 29 publications

(16 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, complete charge neutralisation did not occur even at the stationary phase when the highest flocculation efficiency of 97% was achieved. Previous studies have suggested that complete charge neutralisation is not necessary to achieve high (>95%) flocculation efficiency (Nguyen et al, 2019). It is noteworthy that in Fig.…”

Section: Flocculation Efficiency At Different Growth Phasesmentioning

confidence: 78%

Factors governing microalgae harvesting efficiency by flocculation using cationic polymers

Nguyen

Emmerton

et al. 2021

Bioresource Technology

Self Cite

View full text Add to dashboard Cite

Section: Flocculation Efficiency At Different Growth Phasesmentioning

confidence: 78%

Factors governing microalgae harvesting efficiency by flocculation using cationic polymers

Nguyen

Emmerton

et al. 2021

Bioresource Technology

Self Cite

View full text Add to dashboard Cite

“…KR-1) than marine algal strains (0.9 g/L) (Zhu et al 2020). Furthermore, the occulation e ciency of marine microalgae (Phaeodactylum tricornutum) has been reported to be much higher than that of freshwater microalgae (C. vulgaris) at low dosage (2-16 mg/g dry biomass) of cationic polyacrylamide occulant (FO3801) (Nguyen et al 2019).…”

Section: Resultsmentioning

confidence: 99%

Using Ferric Sulfate, Sodium Hydroxide, and Chitosan to Harvest Marine Microalgae Chlorella Vulgaris and Recycling the Culture Medium

et al. 2020

View full text Add to dashboard Cite

Microalgae are widely used in biofuels, medicine, food, and feed industries. However, harvesting microalgal biomass is a major di culty that hinders their industrial application. In this study, three occulants (ferric sulfate, sodium hydroxide, and chitosan) were used to harvest the marine microalga Chlorella vulgaris, and oc characteristics including occulation e ciency, concentration factor, and ocs morphology were studied. The results showed that the tested occulants can e ciently harvest C. vulgaris. The occulation e ciencies of ferric sulfate (0.9 g/L), sodium hydroxide (0.6 g/L), and chitosan (30 mg/L) were 93.4% ± 0.8%, 96.5% ± 0.6%, and 98.8% ± 1.3% within 70, 100, and 12 min, respectively. The total carbohydrates, proteins, and lipids contents in C. vulgaris were not in uenced by the test occulants after harvesting. When compared with fresh f/2 medium, the recycled medium could also e ciently support C. vulgaris growth. Among the three occulants tested, chitosan was ideal owing to its high e ciency, low dosage requirement, short harvesting time, and reutilization of culture medium.

show abstract

“…The harvesting of freshwater microalgae viz., Chlorella vulgaris and marine algae viz., Phaeodactylum tricornutum using a cationic polyacrylamide flocculant, showed 100% and 90% biomass recovery, respectively. The optimal flocculant concentration for Chlorella and Phaeodactylum was 18.9 and 13.7 mg/g of dry algal biomass, respectively [58].…”

Section: Polymeric Flocculationmentioning

confidence: 99%

Sustainable Cost-Effective Microalgae Harvesting Strategies for the Production of Biofuel and Oleochemicals

Rakesh

Jayakumar

Gudelli

et al. 2020

Highlights in BioScience

View full text Add to dashboard Cite

Microalgae have been explored for sustainable production of biofuel and chemicals. Microalgae is promising feed stock for the production of several oleochemicals. It has the ability to utilize a variety of low cost feed stocks, accumulated large quantities of lipids and variety of value added products in their biomass. One of the major obstacles associated with the conversion of algae into value-added products is harvesting. The harvesting of algae is the most problematic area due to its low sedimentation rate, low biomass concentration, and high capital costs. Harvesting of algae is carried out by different physical, chemical, mechanical, biological, and electrolytic methods such as sedimentation, centrifugation, microstraining, dissolved air flotation, electrolytic flotation, chemical flocculation, bioflocculation, autoflocculation, Filtration. This review highlights the various methods of microalgae harvesting with advantages and future perspective of sustainable and cost-effective harvesting of microalgae.

show abstract

Validation of a cationic polyacrylamide flocculant for the harvesting fresh and seawater microalgal biomass

Cited by 29 publications

References 30 publications

Factors governing microalgae harvesting efficiency by flocculation using cationic polymers

Factors governing microalgae harvesting efficiency by flocculation using cationic polymers

Using Ferric Sulfate, Sodium Hydroxide, and Chitosan to Harvest Marine Microalgae Chlorella Vulgaris and Recycling the Culture Medium

Sustainable Cost-Effective Microalgae Harvesting Strategies for the Production of Biofuel and Oleochemicals

Contact Info

Product

Resources

About