Adsorption of oils, heavy metals and dyes by recovered carbon powder from spent pot liner of aluminum smelter plant.
J Environ Sci Eng
; 50(3): 203-6, 2008 Jul.
Article
en En
| MEDLINE
| ID: mdl-19552074
ABSTRACT
Aluminum smelter plants employ Hall-Heroult electrolysis cells for electrolysis of molten cryolite to recover aluminum metal by electrolysis. These cells use carbon cathode blocks as a lining material inside. At the end of service life of the cells, pot lines are discarded and new carbon blocks are laid for fresh charging. These used carbon cathode blocks, known as spent pot liners, are heavily infested with toxic elements such as fluoride, cyanide, alkali, etc. Therefore, their disposal in open field poses great environmental risk. A simple process has been developed for decontamination of these spent pot liners and to recover its carbon value. The experiments indicated that this carbon, in the form of fine powder (around 20 micron in size) can absorb toxic elements like heavy metals, dyes, oils, etc. to a great extent and thus can be used for mitigating environmental pollution occuring due to various toxic wastes.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Aceites Industriales
/
Carbono
/
Metales Pesados
/
Colorantes
/
Contaminantes Ambientales
/
Restauración y Remediación Ambiental
/
Aluminio
/
Metalurgia
Tipo de estudio:
Evaluation_studies
Idioma:
En
Revista:
J Environ Sci Eng
Año:
2008
Tipo del documento:
Article
País de afiliación:
India