الفهرس 
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Abstract
The present study covers the area of water pollution with
phenols which its presence in drinking water causes a carcinogenic
effects and impair the drinking water an objectionable taste and
odorous. Phenols may present in raw water due to the discharge of
wastewater from coke distillation plants, paper factories, the.
petrochemical industries and many other industries. Therefor the
removal of phenol is very important to protect the human public
health from these problems.
Conventional water treatment processes have no appreciable
effect on the removal of phenols. On the other hand, activated
carbon adsorption process is found to be the most promising line of
treatment for removal of phenols. The activated carbon has the
ability of phenols removal to a certain limits which comply with the
specifications of Ministry Of Health issued on 26-02-1995. The
activated carbon was used in this study in both granular and
powdered form.
The obtained results showed that, the efficiency of removal
of phenols on powdered activated carbon is improved by increasing
the contact time, dose of carbon and mixing speed.
IBut In case of granular activated carbon it was found that,
adsorption of phenols (adsorbate) on granular activated carbon
(adsorbent) is affected by various factors such as depth of carbon in
colurrm, rate of filtration through colurrm and flow technique. •
Maximum utilization of the capacity of granular activated
carbon is achieved by increasing the depth of granular carbon at
constant rate of filtration (the contact time). The study of the effect
of flow techniques showed that, fixed column is more efficient than
the fluidized column in removal of phenols, at. different carbon
depths and rates of filtration. But, the double filtration technique is
more efficient than single column techniques (fixed and fluidized).