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  • Flotation harvesting of microalgae ScienceDirect

    2016-5-1 · Dissolved air flotation (DAF) In dissolved air flotation (DAF) a portion of the water that has been through separation is recycled and pressurized . This recycle ratio governs the amount of bubbles in the operation and is typically 5–15% and is pressurized in the range of 400–650 kPa . When the saturated water depressurizes back to atmospheric pressure, it releases excess air, due to the new

  • Coagulation and dissolved air flotation as a harvesting

    2019-12-1 · Dissolved air flotation (DAF) is a traditional type of flotation and has been reported as an efficient microalgae harvesting method [,,, ]. DAF is a method based on the air micro-bubble generation to promote the rise of microalgae flocs to the system´s

  • Harvesting of microalgae using flocculation combined

    2014-3-11 · This study explored efficient methods of harvesting the Tetraselmis sp. KCTC12236BP using flocculation and dissolved air flotation. Concentration ranges of flocculation agents were optimized using jar tests (batch flocculation experiments) using inorganic (aluminum sulfate, ferric sulfate) and organic (chitosan) flocculants in a pH range of 4 ∼ 10.

  • (PDF) Harvesting Marine Microalgae Nannochloropsis

    PDF The production of high-value bioproducts from microalgae biomass has been widely investigated. However, their production is hindered by the Find, read and cite all the research you need

  • Coagulation and dissolved air flotation as a harvesting

    Request PDF Coagulation and dissolved air flotation as a harvesting method for microalgae cultivated in wastewater Microalgae harvesting is the major bottleneck for biomass production on a

  • Coagulation and dissolved air flotation as a harvesting

    Microalgae harvesting is the major bottleneck for biomass production on a large-scale. In this study, coagulation followed by dissolved air flotation (DAF) was used as a harvesting method for Chlorella sorokiniana cultivated in wastewater. The harvesting performance was evaluated using four coagulants (aluminum sulphate, ferric chloride, Tanfloc SG and Zetag 8185) usually used in water or wastewater

  • Optimization of dissolved air flotation technique in

    Results demonstrated that suspended air flotation (SAF) could harvest algae with a lower air:solids (A/S) ratio, lower energy requirements, and higher loading rates compared to dissolved air

  • Flotation harvesting of microalgae Request PDF

    Dissolved air flotation (DAF) is a traditional type of flotation and has been reported as an efficient microalgae harvesting method [7][8][9][10].

  • Optimization of dissolved air flotation technique in

    2015-2-18 · Dissolved air flotation (DAF) is a well known technology for separating solid particles from liquid streams such as wastewater. This technology has been introduced for microalgae harvesting in the past few years. However, the high operating cost has been a hurdle to commercialization of this technology for microalgae

  • Harvesting microalgal biomass using magnesium

    2016-10-1 · Mg 2+ coagulation-dissolved air flotation was developed for the harvesting of different microalgal strains. Mg 2+ coagulation was found more efficient than Fe 3+,Al 3+ and chitosan. Biomass/medium contamination could be avoid as Mg 2+ is intrinsic in culture medium.

  • (PDF) Harvesting Marine Microalgae Nannochloropsis

    PDF The production of high-value bioproducts from microalgae biomass has been widely investigated. However, their production is hindered by the Find, read and cite all the research you need

  • Coagulation and dissolved air flotation as a harvesting

    Request PDF Coagulation and dissolved air flotation as a harvesting method for microalgae cultivated in wastewater Microalgae harvesting is the major bottleneck for biomass production on a

  • Optimization of dissolved air flotation technique in

    Optimization of dissolved air flotation technique in harvesting microalgae from treated wastewater without flocculants addition January 2015 Journal of Renewable and Sustainable Energy 7(1):013130

  • Coagulation and dissolved air flotation as a harvesting

    Abstract Microalgae harvesting is the major bottleneck for biomass production on a large-scale. In this study, coagulation followed by dissolved air flotation (DAF) was used as a harvesting method for Chlorella sorokiniana cultivated in wastewater. The harvesting performance was evaluated using four coagulants (aluminum sulphate, ferric chloride, Tanfloc SG and Zetag 8185) usually used in

  • HARVESTING MICROALGAL CELLS BY CONTINUOUS

    Dissolved air flotation (DAF) is a novel solid-liquid separation technique, which is characterized of inducing fine gas bubbles mechanicallg to form bubble-cell aggregates, lowing density of agglomerates and forcing them to liquid surface thus realizing cells harvesting process.

  • Flotation harvesting of microalgae Request PDF

    Flotation through the air is based on the addition of air bubbles in the culture medium to make microalgae less dense than water and, thus, removing them (Laamanen et al. 2016; Xue et al. 2019

  • Designing a cost effective microalgae harvesting strategy

    2020-10-13 · designing a cost effective microalgae harvesting strategy for biodiesel production with electrocoagulation and dissolved air flotation a dissertation

  • Harvesting microalgal biomass using magnesium

    Coagulation with magnesium was found to be more effective for harvesting microalgae Chlorella zofingiensis with dissolved air flotation (DAF) than the use of Fe 3+, Al 3+ or chitosan, and the required coagulant dosage was in the order Mg 2+ < chitosan < Al 3+ < Fe 3+.The Mg 2+ dosage required depended on the growth phases and culture medium characteristics.

  • Efficient microalgae harvesting using a thermal

    2019-8-1 · Flotation can be generally divided into dissolved air flotation (DAF), dispersed air flotation (DiAF), and electro flotation (EF) (Ndikubwimana et al. 2016). Foam flotation, a type of DiAF, shows great potential as a microalgal biomass harvesting and enrichment method (Alkarawi et al. 2018).

  • Critical evaluation and modeling of algal harvesting

    Dissolved air flotation (DAF) algal harvesting modeling would help understand and improve the algal harvesting process. A DAF algal harvesting model was developed by incorporating bubble limitation a...

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