Bachmann, Anna-Lisa ; Homm, Gert ; Weidenkaff, Anke (2023)
Oxidation of trivalent arsenic to pentavalent arsenic by means of a BDD electrode and subsequent precipitation as scorodite.
In: Sustainability, 15 (11)
doi: 10.3390/su15119030
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
In order to deposit arsenic residues from copper production in a stable way, the trivalent arsenic must first be xidized to arsenic(V). A well-known but quite expensive method for this is oxidation with hydrogen peroxide. In order to enable the oxidation of arsenic on a large scale in the future, a potentially cheaper method has to be found, which offers the possibility of oxidizing extremely high arsenic concentrations. As a novel alternative, electrochemical oxidation using a boron-doped diamond electrode is investigated. Based on previous work, this paper concentrates on the presence of interfering ions during oxidation. Furthermore, it is shown that the electrochemically xidized arsenic(V) can be precipitated as scorodite. Finally, an economic analysis shows the potential financial benefit of oxidation via BDD electrodes compared to hydrogen peroxide.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Bachmann, Anna-Lisa ; Homm, Gert ; Weidenkaff, Anke |
| Art des Eintrags: | Bibliographie |
| Titel: | Oxidation of trivalent arsenic to pentavalent arsenic by means of a BDD electrode and subsequent precipitation as scorodite |
| Sprache: | Englisch |
| Publikationsjahr: | 2 Juni 2023 |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Sustainability |
| Jahrgang/Volume einer Zeitschrift: | 15 |
| (Heft-)Nummer: | 11 |
| DOI: | 10.3390/su15119030 |
| Kurzbeschreibung (Abstract): | In order to deposit arsenic residues from copper production in a stable way, the trivalent arsenic must first be xidized to arsenic(V). A well-known but quite expensive method for this is oxidation with hydrogen peroxide. In order to enable the oxidation of arsenic on a large scale in the future, a potentially cheaper method has to be found, which offers the possibility of oxidizing extremely high arsenic concentrations. As a novel alternative, electrochemical oxidation using a boron-doped diamond electrode is investigated. Based on previous work, this paper concentrates on the presence of interfering ions during oxidation. Furthermore, it is shown that the electrochemically xidized arsenic(V) can be precipitated as scorodite. Finally, an economic analysis shows the potential financial benefit of oxidation via BDD electrodes compared to hydrogen peroxide. |
| Freie Schlagworte: | BDD electrode, boron-doped diamond, electrochemical oxidation, arsenic, scorodite, copper |
| Zusätzliche Informationen: | Artikel-ID: 9030 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Werkstofftechnik und Ressourcenmanagement |
| Hinterlegungsdatum: | 09 Jan 2024 07:52 |
| Letzte Änderung: | 09 Jan 2024 07:56 |
| PPN: | 514528125 |
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