Decontamination of Zincate Solutions Using Calcium Hydroxide in a Fluidised Bed Reactor |
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| Authors: | Albinas Pigaga Algis Selskis Remigijus Juškenas Vidas Pakštas |
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| Affiliation: | 1. Institute of Chemistry, A. Goitauto 9, 2600 Vilnius, Lithuaniaviliuip@takas.lt aselskis@ktl.mii.lt;3. Institute of Chemistry, A. Goitauto 9, 2600 Vilnius, Lithuania |
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| Abstract: | This article deals with the decontamination and utilisation of waste water. The effectiveness and conditions for the removal of Zn(II) from diluted alkali zinc electroplating bath solutions in flow-rate regime have been investigated. A cheap and simple decontamination route is proposed using the fluidised bed reactor with Ca(OH)2. The advantage of this method is that up to 98% of Zn(II) can be precipitated as a fine crystalline recyclable material—CaZn2 (OH) 6 2H2O with small amount of ZnO. The industrial scheme of this process using lime is proposed. |
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| Keywords: | decontamination zincate solutions packed bed reactor fluidised bed reactor calcium hydroxide |
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