The removal of dye colours from aqueous solutions by adsorption on low-cost materials

The removal of dye colours from aqueous solutions by adsorption on low-cost materials

The ability of five low cost adsorbents - rice husk, cotton, bark, hair and coal - to adsorb two basic dyes, namely, Safranine and Methylene Blue, has been studied. Equilibrium isotherms have been determined and analysed using the Langmuir equations. The monolayer saturation capacities for Safranine...

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Veröffentlicht in:Water, air, and soil pollution air, and soil pollution, 1999-09, Vol.114 (3-4), p.423-438
Hauptverfasser: MCKAY, G, PORTER, J. F, PRASAD, G. R
Format: Artikel
Sprache:eng
Schlagworte:
Adsorbents
Applied sciences
Aqueous solutions
Bark
Coal
Cotton
Dyes
Environmental monitoring
Exact sciences and technology
Hair
Industrial wastewaters
Mathematical analysis
Methylene blue
Oryza sativa
Pollution
Rice
Safranine
Wastewaters
Water treatment and pollution
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Zusammenfassung:The ability of five low cost adsorbents - rice husk, cotton, bark, hair and coal - to adsorb two basic dyes, namely, Safranine and Methylene Blue, has been studied. Equilibrium isotherms have been determined and analysed using the Langmuir equations. The monolayer saturation capacities for Safranine are 1119, 838, 875, 190 and 120 mg g super(-1)adsorbent and for Methylene Blue are 914, 312, 277, 158 and 250 mg g super(-1)adsorbent for bark, rice husk, cotton waste, hair and coal respectively. A limited number of fixed bed column studies have been performed and the bed depth service time for each dye-adsorbent system has been determined.
ISSN:0049-6979
1573-2932
DOI:10.1023/A:1005197308228