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Table 3 Concentration of the ions of the solutions in mg/L (± standard deviation) before and after the injection of air into tap water and the mass balance after acidification of the column wall (in mg)
From: Quantification of the effect of gas–water–equilibria on carbonate precipitation
Before (tap water) | After | \(\sum\) end | \(\sum\) start | \(\Delta\) (start–end) | Acidification | ||||
|---|---|---|---|---|---|---|---|---|---|
mg/L | mg/L | mg | mg | mg | mg | ||||
\({\hbox {Na}}{}^{+}\) | 4.088 | 0.866 | 4.22 | 0.381 | 364 | 331 | – 32.8 | 28.8 | 8.69 |
\({\hbox {NH}}_{4}{}^{+}\) | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | |||
\({\hbox {K}}{}^{+}\) | 1.20 | 0.101 | 1.46 | 0.0898 | 122 | 97.4 | – 24.8 | n.d. | |
\({\hbox {Ca}}^{2+}\) | 93.9 | 8.31 | 28.2 | 1.95 | 1628 | 7610 | 5982 | 3578 | 96.9 |
\({\hbox {Mg}}^{2+}\) | 23.6 | 1.36 | 19.7 | 1.42 | 1878 | 1909 | 30.9 | n.d. | |
\({\hbox {Cl}}{}^{-}\) | 12.7 | 0.0585 | 13.7 | 0.0800 | 1151 | 1032 | – 119 | 149 | 0.276 |
\({\hbox {NO}}_{2}{}^{-}\) | n.d. | n.d. | n.d. | n.d. | n.d. | 17.8 | 0.833 | ||
\({\hbox {NO}}_{3}{}^{-}\) | 8.98 | 0.125 | 6.65 | 0.01732 | 641 | 727 | 85.8 | 22927 | 43.8 |
\({\hbox {PO}}_{4}{}^{3-}\) | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | |||
\({\hbox {SO}}_{4}{}^{2-}\) | 6.68 | 0.0279 | 12.8 | 0.0306 | 755 | 541 | – 214 | 45.0 | 0.102 |