Ultrafine bubble generating method, ultrafine bubble generating apparatus, and ultrafine bubble-containing liquid

An ultrafine bubble-containing liquid that contains ultrafine bubbles with a diameter of less than 1.0 μm generated by an ultrafine bubble generating method including:

• a generating step of generating the ultrafine bubbles by causing a heating element provided in a liquid to generate heat to generate film boiling on an interface between the liquid and the heating element;
• and
• a post-processing step of performing predetermined post-processing on an ultrafine bubble-containing liquid containing the ultrafine bubbles generated in the generating step, the post-processing step comprising removal processing for removing an impurity from the ultrafine bubble-containing liquid,
• wherein the removal processing includes first processing for removing an inorganic ion by using a cation exchange resin, the inorganic ion containing a metal forming the heating element.

An ultrafine bubble generating method comprising:

• a generating step of generating ultrafine bubbles with a diameter of less than 1.0 μm by causing a heating element provided in a liquid to generate heat to generate film boiling on an interface between the liquid and the heating element;
• and
• a post-processing step of performing predetermined post-processing on an ultrafine bubble-containing liquid containing the ultrafine bubbles generated in the generating step, the post-processing step comprising removal processing for removing an impurity from the ultrafine bubble-containing liquid,
• wherein the removal processing includes first processing for removing an inorganic ion by using a cation exchange resin, the inorganic ion containing at least one selected from the group consisting of Si, AL, W, Pt, Pd, Ta, Fe, Cr, Ni, Ir, and Ru.

An ultrafine bubble generating method comprising:

• a generating step of generating ultrafine bubbles with a diameter of less than 1.0 μm by causing a heating element provided in a liquid to generate heat to generate film boiling on an interface between the liquid and the heating element;
• and
• a post-processing step of performing predetermined post-processing on an ultrafine bubble-containing liquid containing the ultrafine bubbles generated in the generating step, the post-processing step comprising removal processing for removing an impurity from the ultrafine bubble-containing liquid,
• wherein the removal processing includes second processing for removing an organic substance by using a filtration filter, the organic substance containing at least one selected from the group consisting of an organic compound containing silicon, siloxane, epoxy, and bacteria.

An ultrafine bubble-containing liquid that contains ultrafine bubbles with a diameter of less than 1.0 μm generated by an ultrafine bubble generating method including:

• a generating step of generating the ultrafine bubbles by causing a heating element provided in a liquid to generate heat to generate film boiling on an interface between the liquid and the heating element;
• and
• a post-processing step of performing predetermined post-processing on an ultrafine bubble-containing liquid containing the ultrafine bubbles generated in the generating step, the post-processing step comprising removal processing for removing an impurity from the ultrafine bubble-containing liquid,
• wherein the removal processing includes first processing for removing an inorganic ion by using a cation exchange resin, the inorganic ion containing at least one selected from the group consisting of Si, AL, W, Pt, Pd, Ta, Fe, Cr, Ni, Ir, and Ru.

An ultrafine bubble-containing liquid that contains ultrafine bubbles with a diameter of less than 1.0 μm generated by an ultrafine bubble generating method including:

• a generating step of generating the ultrafine bubbles by causing a heating element provided in a liquid to generate heat to generate film boiling on an interface between the liquid and the heating element;
• and
• a post-processing step of performing predetermined post-processing on an ultrafine bubble-containing liquid containing the ultrafine bubbles generated in the generating step, the post-processing step comprising removal processing for removing an impurity from the ultrafine bubble-containing liquid,
• wherein the removal processing includes second processing for removing an organic substance by using a filtration filter, the organic substance containing at least one selected from an organic compound containing silicon, siloxane, epoxy, and bacteria.