CPC C12N 5/0012 (2013.01) [B01J 13/043 (2013.01); B01J 13/12 (2013.01); B01J 13/14 (2013.01); C12N 1/20 (2013.01); C12N 5/0025 (2013.01); C12N 2500/24 (2013.01); C12N 2500/72 (2013.01); C12N 2500/74 (2013.01)] | 17 Claims |
1. A method of manufacturing a composite shell particle, comprising:
co-culturing bacteria or algae cells together with a culture medium comprising a carbon source and a metal raw material for a period of time, and the metal raw material in the culture medium is subjected to a redox reaction induced by the bacteria or algae cells to produce a wet powder material containing composite shell particles, wherein the method further comprises, after the culturing step:
causing an upper layer of the culture medium to form a foam; and
separating a suspension from the foam to obtain the wet powder material,
wherein the metal raw material is composed of a metal compound, and a metal in the metal compound is at least one selected from a group consisting of iron, molybdenum, tungsten, manganese, zirconium, cobalt, nickel, copper, zinc, and calcium, and the metal compound is at least one selected from a group consisting of metal chelates, metal oxides, metal sulfides, metal chlorides, metal selenides, metal acid salt compounds, and metal carbonate compounds;
separating the wet powder material from the culture medium;
drying the wet powder material to obtain a powder material, wherein the powder material comprises at least the composite shell particles; and
placing the powder material comprising the composite shell particles in a solution or under vacuum and reacting at 0° C. to 250° C. to enhance a compressive strength of the composite shell particle.
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