Degradation of chlorobenzadehyde on (Bentonite , Kaolin and Attapulgite) surfaces

الملخص

The present work study the adsorption and photolysis of chlorobenzaldehyde
in solution on the surfaces of Bentonite , Kaolin and Attapulgite.
UV- visible spectrophotometer technique ,pH and conductivity have been used to follow
the results,which showed a higher adsorption on kaolin surface than bentonite and
Attapulgite.
Rate of degradation reaction is 10.5 , 2.55 and2.1( mol/l.min-1 ) on kaolin,Bentonite and
Attapulgite respectively.
While the value of conductivity and pH were increased through adsorption process
when bentonite surface used.
Phtolysis processes for chlorobenzaldehyde showed higher rate of reaction in the
absence of any and equal to 4.65 ( mol/l.min-1) .A kinetic study was carried out for the
degradation of chlorobenzaldehyde different kind of clay .
The results showed first order reaction and a relatively high rate of reaction kaolin 4.5,
4.5 and 3.45 ( mol/l.min-1) on kaolin,Bentonite and Attapulgite respectively and a short
half life time ( 23.1,23.1 and 30.13 )min for the same surfaces .