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US 11,230,693 B2Granted
Methods for harvesting microalgae
AssigneeShenzhen Qianhai Xiaozao Technology Co., Ltd.
InventorsWeifang Xi, Wei Yu, Hongjia Zhang
Life of this patent
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Abstract
Methods for harvesting microalgae, comprise providing water containing microalgae, providing flocculant in an amount to form flocs of microalgae when mixed with the water, generating a mixture of the water and the flocculant and separating the flocs from the mixture.
Claims20
A method for harvesting microalgae, the method comprising
- providing water comprising microalgae,
- wherein the water has a pH between about 6.0 and about 10.0 and has a salinity between about 0.01% and about 5%;
- providing chitosan in an amount sufficient to form flocs of microalgae when mixed with the water;
- generating a mixture of the water and the chitosan, wherein the mixture is acidic;
- and
- separating the flocs from the mixture, thereby harvesting the microalgae.
3 more elements
A method for preparing a crude microalgal extract, the method comprising
- providing water comprising microalgae,
- wherein the water has a pH between about 6.0 and about 10.0 and has a salinity between about 0.01% and about 5%;
- providing chitosan in an amount sufficient to form flocs of microalgae when mixed with the water;
- generating a mixture of the water and the chitosan, wherein the mixture is acidic;
- and
- separating the flocs from the mixture, thereby preparing a crude microalgal extract.
3 more elements
A method for preparing a microalgal lipid extract, the method comprising
- providing water comprising microalgae,
- wherein the water has a pH between about 6.0 and about 10.0 and has a salinity between about 0.01% and about 5%;
- providing chitosan in an amount sufficient to form flocs of microalgae when mixed with the water;
- generating a mixture of the water and the chitosan, wherein the mixture is acidic;
- separating the flocs from the mixture, thereby harvesting the microalgae;
- and
- extracting lipid from the microalgae, thereby preparing a microalgal lipid extract.
4 more elements
Dependencies are inferred from the claim text.