| abstract |
The invention discloses the preparation and application of a sodium alginate-based aerogel pellet. The adsorbent material is prepared by the following method: mixing sodium alginate and pectin powder uniformly, adding deionized water and stirring evenly, Set, use a peristaltic pump to drop the mixed aqueous solution into the calcium salt aqueous solution at a uniform rate, soak for several hours, separate the hydrogel pellets, rinse with deionized water, air-dry and freeze-dry. The aerogel beads prepared by this method have good adsorption effect on heavy metal ions such as Cd(II), Pb(II), Cr(III), etc. It is an environmentally friendly adsorption material and can be used in sewage treatment, In food processing, biochemical and other fields, it has outstanding advantages such as simple preparation, high safety, low cost, easy separation, strong adsorption capacity, and stable adsorption effect. |