Selective Precipitation of Heavy Metals as Controlled by a Sulfide-Selective Electrode
| Autor: | S. de Vries, Wim H. Rulkens, A. van der Mark, A.H.M. Veeken |
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| Rok vydání: | 2003 |
| Předmět: |
chemistry.chemical_classification
WIMEK particle Sulfide Chemistry Precipitation (chemistry) Process Chemistry and Technology General Chemical Engineering Inorganic chemistry Filtration and Separation General Chemistry Solubility equilibrium Metal chemistry.chemical_compound Wastewater visual_art visual_art.visual_art_medium Environmental Technology Hydroxide Milieutechnologie crystal precipitation Chelation Effluent |
| Zdroj: | Separation Science and Technology 38 (2003) 1 Separation Science and Technology, 38(1), 1-19 |
| ISSN: | 1520-5754 0149-6395 |
| DOI: | 10.1081/ss-120016695 |
| Popis: | Sulfide precipitation is superior to hydroxide precipitation for removal of heavy metals from wastewaters as it results in lower effluent concentrations and less interference from chelating agents. However, sulfide precipitation is not widely applied in practice because the dosing of sulfide cannot adequately be controlled, and excess sulfide in the effluent is toxic and corrosive. A new process was developed where a sulfide-selective electrode (pS-electrode) controls the sulfide addition. Experiments were performed on lab-scale in batch and continuous systems for synthetic wastewater containing Cd, Cu, Ni, Ph, and Zn. The heavy metals were removed to ppb levels ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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