Quantitative evaluation of effect of BSA on the dissolution rate of kaokinite

• Project/Area Number: 26400519
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Kagoshima University
• Principal Investigator: Kawano Motoharu 鹿児島大学, 理工学域理学系, 教授 (80224814)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
• Keywords: カオリナイト / 有機分子 / タンパク質 / アミノ酸 / 溶解速度 / 溶解実験 / 吸着実験

Outline of Final Research Achievements

Experimental dissolution of kaolinite in solutions containing BSA and various amino acids including acidic, neutral, and basic amino acids were performed to evaluate the effect of organic molecules on dissolution of minerals in the earth's surface environments. Results indicated that the dissolution rate of kaolinite was enhanced by the interaction of BSA. Acidic amino acids also exhibited greater enhancement of dissolution rate relative to the neutral and basic amino acids. Therefore, the interactions between positive sites of kaolinite surface and negative sites of organic molecules would be play an important role as rate enhancement mechanism of this experiments.