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http://nopr.niscpr.res.in/handle/123456789/41680| Title: | Adsorption of some acid dyes from aqueous solutions onto neutral alumina |
| Authors: | Desai, Mihir Dogra, Arti Vora, Sambhav Bahadur, P Ram, R N |
| Issue Date: | Nov-1997 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The kinetics and isotherm studies on the adsorption of five acid dyes, viz., Acid Orange 6, Acid Orange 7, Ethyl Orange, Acid Red 88 and Acid Blue 113 on neutral alumina have been carried out spectrophotometrically. In each case the absorption process follows first order kinetics. For all the five dyes the rate of adsorption shows an increase with increase in dye concentration (0.5 - 6.0 x 10-5M), decrease in pH (4 - 8.5), decrease in temperature (30 - 50°C) and amount of adsorbent (0.1 - 0.6g). The adsorption shows the order: Acid Orange 6> Acid Orange 7 > Ethyl Orange> Acid Red 88 > Acid Blue 113. The dye adsorption follows the Langmuir and Freundlich isotherms; the various isotherm constants and thermodynamic parameters for the adsorption of dyes have been calculated and discussed. |
| Page(s): | 938-944 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.36A(11) [November 1997] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 36A(11) 938-944.pdf | 564 kB | Adobe PDF | View/Open |
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