Microalga dispersion and preparation method of microalga dispersion
AssigneeDAICEN MEMBRANE-SYSTEMS Ltd.
InventorsKenichi NISHIZAKA, Shuji NAKATSUKA, Yoji INOUE, Shuusuke YOKOTA
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Abstract
A method for preparing a microalgal dispersion from a microalga-containing liquid, the microalga-containing liquid containing a microalga having a body length of less than 1000 μm, the method including a concentration step of performing cross flow filtration of the microalga-containing liquid using a hollow fiber membrane, wherein a circulation linear velocity in the cross flow filtration in the concentration step is in a range of 0.2 m/sec or more and 1.3 m/sec or less.
Claims17
A microalgal dispersion comprising a microalga having a body length of less than 10 μm, the microalgal dispersion having a cell concentration of 2 billion cells/cc or more.
A microalgal dispersion comprising a microalga having a body length of from 2 to 5 μm, the microalgal dispersion having a cell concentration of 10 billion cells/cc or more.
A valuable product comprising a microalgal dispersion containing a microalga having a body length of less than 1000 μm, the microalgal dispersion having a cell concentration of 2 billion cells/cc or more;
- a useful component produced by the microalga contained in the dispersion;
- a frozen product of the microalgal dispersion;
- or a useful component produced by the microalga contained in the frozen product, wherein the valuable product is selected from a biofuel, a pharmaceutical, a supplement, a cosmetic, a chemical product, a food, a feed, and a fertilizer.
A method for preparing a microalgal dispersion from a microalga-containing liquid, the microalga-containing liquid containing a microalga having a body length of less than 1000 μm, the method comprising a concentration step of performing cross flow filtration of the microalga-containing liquid using a hollow fiber membrane, wherein
- a circulation linear velocity in the cross flow filtration in the concentration step is in a range of 0.2 m/sec or more and 1.3 m/sec or less.
A valuable product comprising:
- a microalgal dispersion containing a microalga having a body length of less than 1000 μm, the microalgal dispersion having a solid content concentration of 5% or more;
- a useful component produced by the microalga contained in the dispersion;
- a frozen product of the microalgal dispersion;
- or
- a useful component produced by the microalga contained in the frozen product,
- wherein the valuable product is selected from a biofuel, a pharmaceutical, a supplement, a cosmetic, a chemical product, a food, a feed, and a fertilizer.
A method for producing a valuable product, the method comprising:
- adding and charging, as a production raw material,
- a microalgal dispersion containing a microalga having a body length of less than 1000 μm, the microalgal dispersion having a solid content concentration of 5% or more,
- a useful component produced by the microalga contained in the dispersion,
- a frozen product of the microalgal dispersion, or
- a useful component produced by the microalga contained in the frozen product;
- and
- kneading and mixing the production raw material.
Dependencies are inferred from the claim text.