title: Methods coagulation/flocculation and flocculation with ballast agent for effective harvesting of microalgae.
abstract: The effects of coagulant (FeCl3·6H2O), various flocculants based on polyacrylamide (PAA), polyethylenoxide (PEO) and flocculated biomass as ballast agent, dosage and sedimental time on flocculation efficiency of harvesting Chlorella vulgaris GKV1 cultivated in a laboratory were investigated. The results of this work indicated that the flocculation efficiency achieved about 90% after 5 min of sedimentation when adding of coagulant and flocculant mixture (FeCl3 50 mg/l+PEO based Sibfloc-718 7.5 mg/l) or flocculant with ballast agent (Sibfloc-718 7.5 mg/l+10% flocculated biomass). PAA and PEO showed good flocculation efficiency at dosage of 0.025 and 0.015 g/l, respectively without pH adjustment. Finally, the most suitable flocculation method was discussed in this paper.
authors.affiliation: National Research Centre "Kurchatov Institute", NBICS-centre, Biotechnology and Bioenergy Laboratory, Moscow 123182, Russian Federation. Electronic address: gkvbio@gmail.com.
authors.forename: Kirill V
authors.initials: KV
authors.lastname: Gorin
authors.affiliation: National Research Centre "Kurchatov Institute", NBICS-centre, Biotechnology and Bioenergy Laboratory, Moscow 123182, Russian Federation.
authors.forename: Yana E
authors.initials: YE
authors.lastname: Sergeeva
authors.affiliation: National Research Centre "Kurchatov Institute", NBICS-centre, Biotechnology and Bioenergy Laboratory, Moscow 123182, Russian Federation.
authors.forename: Victor V
authors.initials: VV
authors.lastname: Butylin
authors.affiliation: National Research Centre "Kurchatov Institute", NBICS-centre, Biotechnology and Bioenergy Laboratory, Moscow 123182, Russian Federation.
authors.forename: Anastasiya V
authors.initials: AV
authors.lastname: Komova
authors.affiliation: National Research Centre "Kurchatov Institute", NBICS-centre, Biotechnology and Bioenergy Laboratory, Moscow 123182, Russian Federation.
authors.forename: Victor M
authors.initials: VM
authors.lastname: Pojidaev
authors.affiliation: National Research Centre "Kurchatov Institute", NBICS-centre, Biotechnology and Bioenergy Laboratory, Moscow 123182, Russian Federation.
authors.forename: Gulfiya U
authors.initials: GU
authors.lastname: Badranova
authors.affiliation: National Research Centre "Kurchatov Institute", NBICS-centre, Biotechnology and Bioenergy Laboratory, Moscow 123182, Russian Federation.
authors.forename: Anna A
authors.initials: AA
authors.lastname: Shapovalova
authors.affiliation: National Research Centre "Kurchatov Institute", NBICS-centre, Biotechnology and Bioenergy Laboratory, Moscow 123182, Russian Federation.
authors.forename: Irina A
authors.initials: IA
authors.lastname: Konova
authors.affiliation: National Research Centre "Kurchatov Institute", NBICS-centre, Biotechnology and Bioenergy Laboratory, Moscow 123182, Russian Federation.
authors.forename: Pavel M
authors.initials: PM
authors.lastname: Gotovtsev
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D018533:Biomass; D048408:Chlorella vulgaris / Q000737:chemistry; D003029:Coagulants / Q000737:chemistry*; D005427:Flocculation; D006863:Hydrogen-Ion Concentration; D058086:Microalgae / Q000737:chemistry*; D000099166:Polyacrylamides
chemical_list: D000180:Acrylic Resins; D003029:Coagulants; D000099166:Polyacrylamides
keywords: Chlorella vulgaris; Flocculation; Inorganic coagulants; Microalgae cultivation; Polymeric flocculants