Abstract Details
(2020) Modeling and Experiments on Dissolution of Minerals Under the Presence of Air in Pores: Difference in Silicates and Carbonates
Yokoyama T & Nishiyama N
https://doi.org/10.46427/gold2020.3032
The author has not provided any additional details.
06a: Room 2, Thursday 25th June 08:03 - 08:06
Listed below are questions that have been submitted by the community that the author will try and cover in their presentation. To submit a question, ensure you are signed in to the website. Authors or session conveners approve questions before they are displayed here.
Submitted by Jenna Poonoosamy on Thursday 25th June 04:22
Could you please elaborate why the presence of air only slightly affected the dissolution rate of silicates? What would be the impact of surface area roughness of minerals on the net dissolution rate, have you considered sensitibbity analysis to evaluate these effects?
Thank you for the question. In the calculation shown in the slide, we used a surface roughness of 1. However, even if the surface roughness of quartz is increased to 50, the net dissolution rate (average value in the film) is still 85% of the rate constant (15% reduction in dissolution rate). Therefore, the result is not so sensitive to surface roughness at least for quartz.
Could you please elaborate why the presence of air only slightly affected the dissolution rate of silicates? What would be the impact of surface area roughness of minerals on the net dissolution rate, have you considered sensitibbity analysis to evaluate these effects?
Thank you for the question. In the calculation shown in the slide, we used a surface roughness of 1. However, even if the surface roughness of quartz is increased to 50, the net dissolution rate (average value in the film) is still 85% of the rate constant (15% reduction in dissolution rate). Therefore, the result is not so sensitive to surface roughness at least for quartz.
Sign in to ask a question.