What are the extraction methods of boric acid

The extraction of boric acid is a complex process involving the selection of suitable extractants and the optimization of extraction conditions. At present, the research mainly focuses on alcohol extractants, such as isooctanol, isoamyl alcohol, 2-butyl-1-n-octanol, etc. These alcohol extractants can improve the extraction rate of boric acid by forming complexes with boric acid. The following are some specific studies and applications of boric acid extractants:

Isooctanol, isoamyl alcohol and 2-ethyl-1, 3-hexanediol were used to extract boric acid from salt lake brine. These alcohols show a synergistic effect in the extraction of boric acid, which can effectively improve the single-stage extraction rate of boric acid.
2-butyl -1-n-octanol and TMPD(2,2, 4-trimethyl-1, 3-pentanediol) were selected as complex extractants. The extraction conditions were optimized by single factor experiments, such as extractant concentration, ratio (O/A), pH value, etc., and high boric acid extraction rate was achieved.
Monohydric alcohols such as isooctanol, isoamyl alcohol, and isobutanol have also been studied for the extraction of boric acid from brines, with isooctanol being the best.
In addition, there are studies to explore the solvent extraction method and ion exchange method combined with the extraction resin method, by the extraction agent soaked in a specific resin, and then used to adsorb and elute boric acid, this method shows practicality, but the need to improve the strength of the extraction resin and chemical stability of the improvement.

In summary, boric acid extractant research mainly focused on improving the extraction efficiency and selectivity, by optimizing the type and concentration of the extractant, extraction conditions and combining other separation technologies, in order to achieve efficient and environmentally friendly boric acid extraction purposes.