BIOLOGICAL ABSORBENTS PREPARED WITH COLLOIDAL SILICA GEL AND ABSORPTION AND RECOVERY OF HEAVY METAL BY THE SAME

摘要

The present invention relates to a method for producing a spherical silica bead in which microbial cells or chemically modified microbial cells by introducing oxime groups or phosphoric acid groups are mixed with colloidal silica sol and the mixture is put into a thermostatic chamber to form a spherical silica bead carrying microbial cells, The present invention relates to a biocompatible material capable of adsorbing heavy metals and the like produced by aging a silica bead and extracting it with a solvent. The present invention also includes a method for desorbing and recovering a heavy metal adsorbed on the bioabsorbent. The present invention also relates to a method and apparatus for preparing silica beads carrying microbial cells by adding a mixture of a chemically modified microorganism and a colloidal silica sol to a thermostatic chamber, And a method and an apparatus for producing silica beads composed of a plurality of glass tubes for dropping the mixture in a droplet state.