Dissolution of Feldspars in Oxalic Acid Solutions
Conference
·
OSTI ID:837329
The rates of plagioclase feldspar and quartz dissolution in solutions of oxalic acid exceed those determined in inorganic solutions at the same pH. The effect of oxalic acid is not strictly additive to the rates in inorganic solution. A better empirical description of the dissolution process requires 6 terms, 3 each for Si and Al release. These terms describe proton-promoted dissolution, ligand-promoted dissolution, and a mixed proton/ligand interaction. The proton/ligand synergy is consistent with a mechanism in which HOx{sup -} (HOOCCOO{sup -}) is the species which attacks the mineral surface.
- Research Organization:
- College of Marine Studies, University of Delaware (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- FG02-91ER61184
- OSTI ID:
- 837329
- Country of Publication:
- United States
- Language:
- English
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