| Titre : |
Electrochemical separation of chromium containing tannery waste liquid |
| Type de document : |
texte imprimé |
| Auteurs : |
Zheng Haonan, Auteur ; Cao Shengkui, Auteur ; Yang Wenhua, Auteur ; Zhihua Shan, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 145-150 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Eaux usées -- Décontamination
Eaux usées -- Teneur en chrome hexavalent
Eaux usées -- Teneur en chrome trivalent
Electrochimie
Electrolyse
Énergie -- Consommation
Membranes échangeuses d'ions
Séparation (technologie)
Tannage -- Déchets
Tannage au chrome
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Comparing the electrolysis results of a chromium sulphate standard solution with cation and anion membranes, it was found that electrolysis with the cation membrane could remove more chromium. After electrolysis with the cation membrane of the mixed waste liquid containing chromium from chrome tanning, washing, chrome retanning and neutralisation, Cr(OH)3 could be precipitated, the Cr3+ solution showed a reduced concentration at the cathode, and a Cr6+ solution could be obtained at the anode. The results of this study show that cyclic electrolysis of such liquid waste containing chromium at the cathode can increase Cr(OH)3 precipitation and reduce the Cr6+ concentration at the anode. |
| Note de contenu : |
- PRINCIPLE OF CHROMIUM REMOVAL BY AN ELECTROCHEMICAL METHOD
- EXPERIMENTAL METHOD : Main reagents - Main instruments and equipment - Determination of the chromium content - Preparation of the waste liquid containing chromium - Electrolysis experiment
- EXPERIMENTAL RESULTS AND DISCUSSION : Electrolysis of the chromium sulphate standard solution with an anion membrane - Double cell electrolysis of chromium sulphate standard solution with a cation membrane - Double cell electrolysis of waste liquid containing chromium with a cation membrane - Results of the cyclic electrolysis of waste liquid containing chromium in the cathode - Electrical energy consumption of one cycle of electrolysis |
| En ligne : |
https://drive.google.com/file/d/1j6UDp1T1ywy_Th55yvNEtuT1g3TvrLsI/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34244 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 104, N° 3 (05-06/2020) . - p. 145-150
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