Science – Society – Technology
From: Quantification of the effect of gas–water–equilibria on carbonate precipitation
pH maximum | Within time, /min | pH minimum | Within time, /min | |
---|---|---|---|---|
\({\hbox {CO}}_{2}\) stripping from air | ||||
Tap water | ||||
First run—measured | 8.66 | 1000 | 8.22 | 2470 |
First run—modeled | 8.73 | 901 | 8.16 | 1760 |
Subsequent run—measured | 8.41 | 233 | 8.31 | 778 |
Subsequent run—modeled | 8.40 | 242 | 8.32 | 802 |
I = \({1.40\times 10^{-2}}\)mol/L | ||||
First run—measured | 8.83 | 1530 | 8.29 | 2410 |
First run—modeled | 8.79 | 1030 | 8.32 | 2720 |
Subsequent run—measured | 8.61 | 364 | 8.36 | 697 |
Subsequent run—modeled | 8.62 | 262 | 8.36 | 886 |
Dissolution of \({\hbox {CaCO}}_{3}\) with \({\hbox {CO}}_{2}\) | ||||
Tap water | ||||
First run—measured | – | – | 5.55 | 40.0 |
First run—modeled | – | – | 5.53 | 74.0 |
Subsequent run—measured | – | – | 5.65 | 64.0 |
Subsequent run—modeled | – | – | 5.58 | 50.0 |