Cooking oil-surfactant emulsion in water for harvesting Chlorella vulgaris by sedimentation or flotation

0524368 - ÚH 2021 RIV NL eng J - Článek v odborném periodiku
Potočár, T. - Leite, LS. - Daniel, LA. - Pivokonský, Martin - Matoulková, D. - Brányik, T.
Cooking oil-surfactant emulsion in water for harvesting Chlorella vulgaris by sedimentation or flotation.
Bioresource Technology. Roč. 311, September (2020), č. článku 123508. ISSN 0960-8524. E-ISSN 1873-2976
Grant CEP: GA ČR(CZ) GA18-05007S
Institucionální podpora: RVO:67985874
Klíčová slova: cetyltrimethylammonium bromide * Chlorella vulgaris * cooking oil * sedimentation * flotation
Obor OECD: Environmental sciences (social aspects to be 5.7)
Impakt faktor: 9.642, rok: 2020
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S096085242030780X?via%3Dihub

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.
Trvalý link: http://hdl.handle.net/11104/0309441