当前位置: X-MOL 学术Geochim. Cosmochim. Acta › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Experimental study of epidote dissolution rates from pH 2 to 11 and temperatures from 25 to 200 °C with implications for mineral carbon storage
Geochimica et Cosmochimica Acta ( IF 5 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.gca.2020.11.015
Chiara Marieni , Martin J. Voigt , Eric H. Oelkers

Abstract The dissolution rates of the Green Monster Mine (Alaska) epidote at temperatures of 25, 100 and 200 °C, and over the pH range 2-11, were determined from far-from equilibrium experiments performed in both batch and mixed-flow reactors. Epidote dissolution rates based on silicon decrease with increasing pH to pH ∼8 then increase in response to further pH increases. The apparent relative metal release rates from epidote at chemical steady-state were found to vary with pH and temperature, in part due to secondary phase formation. At 100 and 200 °C, Al is preferentially released relative to Si at alkaline pH, but preferentially retained by the solid at 2

中文翻译:

从 pH 2 到 11 和温度从 25 到 200 °C 的绿帘石溶解速率的实验研究对矿物碳储存的影响

摘要 Green Monster Mine(阿拉斯加)绿帘石在 25、100 和 200 °C 以及 pH 值范围 2-11 下的溶解速率是通过在间歇式和混流式反应器中进行的远非平衡实验确定的。 . 基于硅的绿帘石溶解速率随着 pH 值增加到 8 左右而降低,然后随着 pH 值进一步升高而增加。发现化学稳态下绿帘石的表观相对金属释放速率随 pH 值和温度而变化,部分原因是第二相的形成。在 100 和 200 °C 时,Al 相对于 Si 在碱性 pH 值下优先释放,但在 2 时优先被固体保留
更新日期:2021-02-01
down
wechat
bug