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- Title
ADSORPTION AND KINETIC BEHAVIOR OF FLY ASH USED FOR THE REMOVAL OF LEAD FROM AN AQUEOUS SOLUTION.
- Authors
Muthreja, Ishwardas L.; Agarwal, Ajay K.; Kadu, Mahendra S.; Pandhurnekar, Chandrashekhar P.
- Abstract
The removal of lead through adsorption by fly ash was investigated. Batch mode adsorption experiments using Atomic Absorption Spectroscopy (AAS) technique were performed. The results obtained were described by the Langmuir, Freundlich and Brunauer-Emmett-Teller (BET) adsorption isotherms using the least square fit method. The best fit was assessed by the linear coefficient of correlation (R²) and the non-linear Chi-square test (Sχ²). The experimental and theoretical values of the fly ash equilibrium capacity as an adsorbent were compared. It was found that the BET adsorption isotherm provides the best fit in view of the linear coefficient of correlation, while the Freundlich adsorption isotherm was found more appropriate in case of non linear Chi square test (Sχ²) application. It was also found that the pseudo second order kinetic model provides the best description of fly ash adsorption behavior.
- Subjects
ADSORPTION isotherms; FLY ash; AQUEOUS solutions; LEAD; ATOMIC absorption spectroscopy
- Publication
Journal of Chemical Technology & Metallurgy, 2017, Vol 52, Issue 3, p505
- ISSN
1314-7471
- Publication type
Article