ENHANCED DISSOLUTION OF SILICATE MINERALS BY BACTERIA AT NEAR-NEUTRAL PH

被引：6

作者：

VANDEVIVERE, P ^{[1
]}

WELCH, SA ^{[1
]}

ULLMAN, WJ ^{[1
]}

KIRCHMAN, DL ^{[1
]}

机构：

[1] UNIV DELAWARE,COLL MARINE STUDIES,LEWES,DE 19958

来源：

MICROBIAL ECOLOGY | 1994年 / 27卷 / 03期

关键词：

D O I：

暂无

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Previous studies have shown that various microorganisms can enhance the dissolution of silicate minerals at low (<5) or high (>8) pH. However, it was not known if they can have an effect at near-neutral pH. Almost half of 17 isolates examined in this study stimulated bytownite dissolution at near-neutral pH while in a resting state in buffered glucose. Most of the isolates found to stimulate dissolution also oxidized glucose to gluconic acid. More detailed analysis with one of these isolates suggested that this partial oxidation was the predominant, if not sole, mechanism of enhanced dissolution. Enhanced dissolution did not require direct contact between the dissolving mineral and the bacteria. Gluconate-promoted dissolution was also observed with other silicate minerals such as albite, quartz, and kaolinite.

引用

页码：241 / 251

页数：11

共 32 条

[1]

BENGTSSON G, 1991, FEMS MICROBIOL ECOL, V86, P15, DOI 10.1111/j.1574-6968.1991.tb04791.x

[2] INCREASED SOLUBILITY OF QUARTZ IN WATER DUE TO COMPLEXING BY ORGANIC-COMPOUNDS [J].