Adsorption of phenol from aqueous solutions using incinerated sewage sludge
A study had been carried out to detennine the potential use of sewage sludge ash (SSA) as an adsorbent in removing phenol from aqueous solution. Parameters which contributed to affect phenol removal were initial phenol concentration, contact time, adsorbent dosage, pH and particle size of adsorbe...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English |
| Published: |
2004
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8636/1/24p%20WAN%20AFNIZAN%20WAN%20MOHAMED.pdf |
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| Summary: | A study had been carried out to detennine the potential use of sewage sludge ash
(SSA) as an adsorbent in removing phenol from aqueous solution. Parameters which
contributed to affect phenol removal were initial phenol concentration, contact time,
adsorbent dosage, pH and particle size of adsorbent. Results showed that the
adsorption capacities of adsorbent (Kf) for phenol decreased from 14.89 mg/g to
0.68 mg/g as initial phenol concentration increased from 0.1 mg/l to 5.0 mg/l. Results
revealed that solution with higher initial phenol concentration required longer time to
reach equilibrium state. Adsorption capacity of adsorbent (Kf) decreased from
14.89 mg/g to 0.66 mg/g as contact time increased from 240 minutes to
1200 minutes. Furthermore, pH was found to affect the adsorption capacity where as
pH decreased from original (9 - 12) to neutral (7 - 8), adsorption capacity of
adsorbent increased from 0.68 mg/g to 3.0 mg/g. Moreover, it was shown that as
particle size of adsorbent decreased from 150 - 212 ~ to 63 - 149 ~, adsorption
capacity of adsorbent (Kf) was decreased from 2.06 mg/g to 0.68 mg/g. Adsorption
isotherm analysis showed that the experimental data fit Freundlich model in most
conditions. |
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