Innovative developments in the selective removal and reuse of heavy metals from wastewaters
| Autor: | Wim H. Rulkens, A.H.M. Veeken |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2003 |
| Předmět: |
chemical precipitation
Environmental Engineering sulfiden verwijdering sulfides Inorganic chemistry pH meter Life Science Solubility heavy metals Effluent Water Science and Technology WIMEK waste water Membrane reactor Waste management afvalwaterbehandeling Precipitation (chemistry) Chemistry afvalwater Continuous reactor removal solubility selectivity zware metalen Solubility equilibrium water treatment waterzuivering waste water treatment Environmental Technology Water treatment Milieutechnologie chemische precipitatie selectiviteit |
| Zdroj: | Enviro 2002 and IWA 3rd World Water Congress, Melbourne, Australia, 2002.-[S.l.] : [s.n.], 2002.-Paper e20879a Water Science and Technology 47 (2003) 10 Water Science and Technology, 47(10), 9-16 |
| ISSN: | 0273-1223 |
| DOI: | 10.2166/wst.2003.0525 |
| Popis: | Sulphide precipitation of heavy metal containing wastewaters results in low effluent concentrations. However, sulphide precipitation is not widely applied in practice because the dosing of sulphide cannot adequately be controlled. A new process was developed where the combination of a sulphide-selective electrode (pS-electrode) and pH electrode controls the sulphide addition. Precipitation experiments were performed on a laboratory-scale in batch and continuous reactor systems with synthetic wastewaters containing Cd, Cu, Ni, Pb or Zn. The response of the pS-electrode during precipitation was unique for each heavy metal and was directly related to the solubility product of the corresponding metal sulphide. The metals were removed to levels |
| Databáze: | OpenAIRE |
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