化工进展2012，Vol.31Issue(10)：2341-2347,7.
矿物环境对硅酸盐细菌的铝土矿浸矿脱硅作用的影响
Effects of mineral environments on desilicon from bauxite by silicate bacteria
摘要
Abstract
A strain of silicate bacteria screened from the surface of bauxite was chosen to carry on its physio-biochemical characteristics in different mineral culture media and desilicon from bauxite.The results showed that the strains of enrichment cultivated in different mineral media have different physio-biochemical characters,and can release major elements containing in corresponding minerals.The strains cultivated in orthoclase,kaolinite and olivine media have stronger abilities of desilicon from bauxite,the SiO2 content intheir supernatants are 0.5—1.0 times higher than the strains cultivated in other minerals.In addition,and the above strains produced more acids and polysaccharides,forming obvious bacterial-mineral complexes in the process of bauxite bioleaching.Strains cultivated in different minerals have selectivity over bio-catalytic.The strains cultivated in olivine,calcite and hematite media have better ability in dissolving,Mg and Fe.The results showed that the strains cultivated in different minerals are able to produce certain inducible enzymes for specific elements.Therefore,certain mineral training strains or mixed mineral training strains can be chosen to decompose bauxite depending on the composition of bauxite.关键词
硅酸盐细菌/胶质芽孢杆菌/生物浸出/铝土矿/脱硅Key words
silicate bacteria/Bacillus mucilaginosus/bioleaching/bauxite/desilicon分类
生物科学引用本文复制引用
孙德四,陈晔,曹飞..矿物环境对硅酸盐细菌的铝土矿浸矿脱硅作用的影响[J].化工进展,2012,31(10):2341-2347,7.基金项目
国家自然科学基金项目 （）
