Effective harvesting of microalgae: Comparison of different polymeric flocculants
| Autor: | Yael Kinel-Tahan, Yael G. Mishael, Mordechai Tavasi, Yaron Yehoshua, Yoram Gerchman, Barak Vasker |
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| Rok vydání: | 2017 |
| Předmět: |
Flocculation
Environmental Engineering Polymers Sedimentation (water treatment) 020209 energy Static Electricity Chlorella vulgaris Cell Culture Techniques Bioengineering 02 engineering and technology 010501 environmental sciences 01 natural sciences Chloride law.invention Chitosan chemistry.chemical_compound law Microalgae 0202 electrical engineering electronic engineering information engineering medicine Zeta potential Seawater Biomass Waste Management and Disposal Filtration 0105 earth and related environmental sciences Renewable Energy Sustainability and the Environment Environmental engineering Water General Medicine Hydrogen-Ion Concentration Pulp and paper industry Kinetics chemistry Water treatment medicine.drug |
| Zdroj: | Bioresource Technology. 228:141-146 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2016.12.040 |
| Popis: | Microalgae harvesting is a major hurdle in the use of microalgae for oil production. Here we describe the use of a standard cationic polymer used for water treatment, Polydiallyldimethylammonium chloride (PDADMAC), for sedimentation of Chlorella vulgaris and comparison of its flocculation properties with two other polymers, chitosan and Superfloc®. We found PDADMAC to be the most effective flocculant with 90% of the algae flocculating at concentrations as low as 5 mg/L within 60 min, and good activity even at pH = 10. Interestingly, with both PDADMAC and chitosan maximum flocculation was achieved much before zeroing of zeta potential. PDADMAC flocculation was also very effective in enhancing harvest by filtration and somewhat at flocculation and sedimentation of marine algae, Nannochloropsis salina . |
| Databáze: | OpenAIRE |
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