Mineral-Microbe-Water Interaction on the Earth Surface

地球表面矿物质-微生物-水的相互作用

• 批准号: 14340165
• 负责人: KAWANO Motoharu
• 金额: $ 9.6万
• 依托单位: Kagoshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14340165/
• 关键词: Earth surface; Bacteria; Dissolution; Ligand; Protein; Polysaccharide; Reactvie site; 鉱物; 微生物; スメクタイト; カオリナイト; 溶解速度; 飽和; 有機酸; 有機分子; 吸着; 錯体; 表面電荷; イオン吸着; アモルファスシリカ

Dissolution experiments of various silicate minerals such as smectite, kaolinite, and amorphous silica in the systems containing bacteria were performed to confirm the effects of dissolution rates of the minerals. The apparent effects of bacteria on the dissolution rates were evaluated by using cell numbers, and the inherent effects were estimated by reactive site numbers of organic molecules interacted with the mineral surfaces. Generally, bacterial dissolution of silicate minerals proceed mainly by ligand promoted processes released from the bacterial cells. Therefore, the inherent effects of bacteria on the mineral dissolution can be evaluated by reactive site numbers of the ligands. In this study, thus, dissolution rates of minerals in organic systems containing albumin or xanthan were evaluated by their reactive site numbers as a parameter of the rates.

在含细菌的体系中进行了各种硅酸盐矿物（如蒙脱石、高岭石和无定形二氧化硅）的溶解实验，以确定矿物溶解速率的影响。细菌对溶解速率的表观影响用细胞数来评价，内在影响用有机分子与矿物表面相互作用的活性位点数来估计。一般来说，细菌对硅酸盐矿物的溶解主要是通过从细菌细胞中释放的配体促进过程进行的。因此，细菌对矿物溶解的内在影响可以通过配体的活性位点数来评价。因此，在这项研究中，矿物质在含有白蛋白或黄原胶的有机系统中的溶解速率是通过它们的反应位点数作为速率的参数来评估的。