Biosorption of scandium and yttrium from solutions

被引：34

作者：

Karavaiko, GI ^{[1
]}

Kareva, AS ^{[1
]}

Avakian, ZA ^{[1
]}

Zakharova, VI ^{[1
]}

Korenevsky, AA ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST MICROBIOL,MOSCOW 117811,RUSSIA

来源：

BIOTECHNOLOGY LETTERS | 1996年 / 18卷 / 11期

关键词：

D O I：

10.1007/BF00129957

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The usage of biosorbents allows separation of scandium and yttrium from each other and from Fe, Al, Ti, Si, and Ca in hydrometallurgical processing of ores and wastes. It was shown that sorption of scandium and yttrium increased with the increase in pH of solution. Initial rate of scandium sorption depended on the biomass type; however 85-98% of scandium was sorbed within 10-30 min with most biomass types tested. The presence of aluminum, iron (III), and titanium in the solution inhibited sorption of scandium and particularly yttrium. After four cycles of sorption, 98.8% of scandium and 87% of yttrium was extracted from red mud leach solution by the biomass of Saccharomyces cerevisiae and Aspergillus terreus, respectively. Selectivity of the process of scandium and yttrium recovery could be achieved during sorption and also desorption, when solubilization of sorbed associated elements was inhibited by high pH values.

引用

页码：1291 / 1296

页数：6