Adsorption of malic acid in aqueous solution by amberlite xad-4
The adsorption of malic acid onto XAD-4 was studied. The effect of shaking time, pH, temperature, concentration of malic acid and amount of adsorbent on the adsorption of malic acid was investigated by batch process. It was found that the adsorption process works best at lower pH (pH 2.0) and sha...
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Universiti Sains Malaysia
2009
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my.usm.eprints.59503 http://eprints.usm.my/59503/ Adsorption of malic acid in aqueous solution by amberlite xad-4 Sani, Nor Diyana Md QD241-441 Organic chemistry The adsorption of malic acid onto XAD-4 was studied. The effect of shaking time, pH, temperature, concentration of malic acid and amount of adsorbent on the adsorption of malic acid was investigated by batch process. It was found that the adsorption process works best at lower pH (pH 2.0) and shaking time of 75 min. The equilibrium data could be described well by Langmuir and Freundlich isotherms but the best fit is the Freundlich model based on the higher correlation coefficient (R2 ) value. Thermodynamic parameters such as enthalpy change (l1H 0 ), free energy change (l1Go) and entropy change (l1So) were calculated. The results shows that the adsorption is endothermic, spontaneous and entropy driven respectively. Universiti Sains Malaysia 2009 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/59503/1/NOR%20DIYANA%20BINTI%20MD.%20SANI%20-%20e.pdf Sani, Nor Diyana Md (2009) Adsorption of malic acid in aqueous solution by amberlite xad-4. Project Report. Universiti Sains Malaysia. (Submitted) |
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| language |
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QD241-441 Organic chemistry |
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QD241-441 Organic chemistry Sani, Nor Diyana Md Adsorption of malic acid in aqueous solution by amberlite xad-4 |
| description |
The adsorption of malic acid onto XAD-4 was studied. The effect of shaking time, pH,
temperature, concentration of malic acid and amount of adsorbent on the adsorption of
malic acid was investigated by batch process. It was found that the adsorption process works
best at lower pH (pH 2.0) and shaking time of 75 min. The equilibrium data could be
described well by Langmuir and Freundlich isotherms but the best fit is the Freundlich model
based on the higher correlation coefficient (R2
) value. Thermodynamic parameters such as
enthalpy change (l1H 0
), free energy change (l1Go) and entropy change (l1So) were calculated.
The results shows that the adsorption is endothermic, spontaneous and entropy driven
respectively. |
| format |
Monograph |
| author |
Sani, Nor Diyana Md |
| author_facet |
Sani, Nor Diyana Md |
| author_sort |
Sani, Nor Diyana Md |
| title |
Adsorption of malic acid in aqueous
solution by amberlite xad-4 |
| title_short |
Adsorption of malic acid in aqueous
solution by amberlite xad-4 |
| title_full |
Adsorption of malic acid in aqueous
solution by amberlite xad-4 |
| title_fullStr |
Adsorption of malic acid in aqueous
solution by amberlite xad-4 |
| title_full_unstemmed |
Adsorption of malic acid in aqueous
solution by amberlite xad-4 |
| title_sort |
adsorption of malic acid in aqueous
solution by amberlite xad-4 |
| publisher |
Universiti Sains Malaysia |
| publishDate |
2009 |
| url |
http://eprints.usm.my/59503/1/NOR%20DIYANA%20BINTI%20MD.%20SANI%20-%20e.pdf http://eprints.usm.my/59503/ |
| _version_ |
1783877482090332160 |
| score |
13.159267 |