关键词: 盐湖, 卤水, 溶剂萃取, 硼酸, 萃取剂, 脂肪醇, 芳香醇, 混合醇, 盐湖卤水, 硼酸, 萃取剂, 脂肪醇

Abstract: Salt-lake brine is an important source of boron，which contains abundant boric acid. Solvent extraction is a useful and potential industrialized technology for boron recovery from brine. Compared to traditional techniques，solvent extraction can provide a simple，robust and high productive process. The key for solvent extraction is the choice of extractant. This paper mainly reviewed structures of boron-selective extractants and corresponding extraction efficiency reported in recent years. Boron extractants were catalogued into aliphatic alcohol，aromatic alcohol and mixed alcohol according to their structures and mechanisms of boron recovery. Among aliphatic alcohols，the application of an aliphatic monobasic alcohol，i.e. 2-ethylhexanol，and diol，i.e. 2- ethyl-1,3-hexanediol were extensively discussed. They have been proven effective in boron recovery from aqueous solutions. As well，a large number of β-diols with new structure were introduced. This review can be used as a reference for the design of novel boron extractant as well as practical extraction process.

Key words: salk lake, brine, solvent extraction, boric acid, extractant, aliphatic alcohol, aromatic alcohol, mixed alcohol, salk lake brine, boric acid, extractant, aliphatic alcohol