Abstract:
This study examines the sorption ability of spent tea leaves to alpha-Cypermethrin,
at constant temp fixed to 36o
C, and different concentrations, ability of the sorbent
to remove the pesticide was proved at concentration less than 10 ppm with an
efficiency up to 98.77%. Many kinetic model were applied, the pseudo second
order model gives more compatibility with experimental results, as well Langmuir
model that suggest monolayer sorption. According to the study the maximum
sorption capacity was found to be about 4.22 mg/gm. pseudo first order mode and
Freundlich model had failed to give interpreting of sorption reaction rate, two
parameters were playing role of such results the high temperature of sorption and
the extra speed of mixing the sorbent agent.