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Giti Kashi
BIOSCIENCE BIOTECHNOLOGY RESEARCH COMMUNICATIONS ON THE ANALYSIS OF PHENOL REMOVAL FROM DRINKING WATER BY BATCH REACTOR 295
be R
2
= 0.8715 for phenol. The apparent rate constant,
K
1
and the half-life time, t
1/2
are calculated to be 0.5357
min
-1
and 1.29 min. Phenol reduction follows a rst
order kinetic model. Phenol reduction follows a Freun-
dlich isotherm model (R
2
>0.9). This is agreement with
Kumaraswamy et al who report that chromium by egg-
shell powder follows a Langmuir isotherm model. There-
fore, the eggshell powder adsorption reactor, in batch
mode, is showed to be an ef cient and viable process for
meeting a high degree of phenol reduction from drink-
ing water and be considered as a promising technology
for treating phenol-polluted drinking water in develop-
ing countries (Figure 8, Figure 9).
CONCLUSION
The experimental results suggest that batch chicken
eggshell powdered reactor is a practical and promis-
ing method for the phenol-contaminated water. Phenol
removal is affected by pH, the concentration of phenol,
the concentration of adsorbent, and reaction time. This
reactor are capable of phenol removal at the pH value
(3) investigated, with a reaction time 80 min. It is pur-
posed that performance of process is studied the other
material.
ACKNOWLEDGMENTS
The authors thank the Department of Environmental
Health of Islamic Azad University, Tehran Medical Sci-
ences Branch for nancial and instrumental supports.
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