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Cooking oil-surfactant emulsion in water for harvesting Chlorella vulgaris by sedimentation or flotation
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SYSNO ASEP 0524368 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Cooking oil-surfactant emulsion in water for harvesting Chlorella vulgaris by sedimentation or flotation Author(s) Potočár, T. (CZ)
Leite, LS. (BR)
Daniel, LA. (BR)
Pivokonský, Martin (UH-J) SAI, ORCID, RID
Matoulková, D. (CZ)
Brányik, T. (CZ)Article number 123508 Source Title Bioresource Technology. - : Elsevier - ISSN 0960-8524
Roč. 311, September (2020)Number of pages 6 s. Publication form Online - E Language eng - English Country NL - Netherlands Keywords cetyltrimethylammonium bromide ; Chlorella vulgaris ; cooking oil ; sedimentation ; flotation Subject RIV DJ - Water Pollution ; Quality OECD category Environmental sciences (social aspects to be 5.7) R&D Projects GA18-05007S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UH-J - RVO:67985874 UT WOS 000539211000007 EID SCOPUS 85084499110 DOI 10.1016/j.biortech.2020.123508 Annotation In this study, a novel harvesting emulsion (HEM) consisting of cooking oil in an aqueous solution of cetyltrimethylammonium bromide (CTAB) was tested for the harvesting of a technologically important microalga, Chlorella vulgaris. The influence of HEM dose, biomass and bovine serum albumin (BSA) (model interferer compound) on harvesting efficiency (E) were studied. The HEM E was over 90% at pH 10 (0.33% (v/v) cooking oil, 6.7 mg/L of CTAB) and 12 (0.13% (v/v) cooking oil, 2.7 mg/L of CTAB). Harvesting efficiencies at pH 4 and 7 were < 73.5% due to the absence of precipitate formation. Bovine serum albumin (10 mg/L) increased the HEM dose necessary to achieve E ˃ 90% by 1.2 (pH 10), and 3 fold (pH 12). By manipulating the dose of HEM and pH, the method of harvesting (flocculation/sedimentation or flotation) was adjustable depending on the technological requirements. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2021 Electronic address https://www.sciencedirect.com/science/article/pii/S096085242030780X?via%3Dihub
Number of the records: 1