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Q#1
GATE CH 2017
NAT
+2 marks
-0 marks
In a batch adsorption process, 5 g of fresh adsorbent is used to treat 1 liter of an aqueous phenol solution. The initial phenol concentration is 
liter. The equilibrium relation is given by
where 
is the amount of phenol adsorbed in mg of phenol per gram of adsorbent; and 
is the concentration of phenol in 
in the aqueous solution.
When equilibrium is attained between the adsorbent and the solution, the concentration of phenol in the solution, rounded to 1 decimal place, is 
mg/liter.
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