Einzig beim Mittelfeld spricht man bei Christie's euphemistisch von einem "softening" der Nachfrage: Nur gerade 60 Prozent seines Auktionsgutes hat den Besitzer gewechselt. (Quelle: Süddeutsche Zeitung 2001)
Table 2 shows a typical analysis of the pre-treated water after lime-alkaline softening (0.7 mmol/l Ca(OH)2) and 3.5 mmol/l NaOH are added) and after two-stage ion exchange with a weak cation exchanger. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)
In lime-alkaline softening (Ca(OH)2 and NaOH are added), the colloidal matter in the brackish water (preferentially humic acids) is reduced sharply by adsorption on Mg(OH)2, which is formed in sufficient quantity at an optimum ratio of CaCO3 : Mg(OH)2. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)
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