| http://www.w3.org/ns/prov#value | - Packed column 12 is wrapped in any suitable insulation material 16 and is provided with an inlet 18, having a valve means 20a, to receive an influent containing contaminants such as CO2 and mobile cations and anions and with an outlet 22, also having a valve means 20b, to receive an effluent free from mobile cations from packed column 12.
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