The study investigated the possibility of removing heavy metal ions (Cd, Pb) from
aqueous solutions using adsorption method on the citrus peel (orange), which is a solid
waste available in abundance especially in the Syrian coast as well as easy to
use at low
cost. The optimal conditions for the simultaneous adsorption of the ions (Cd 2+, Pb 2+) on
the surface of orange peel (dry, soft) were determined.The concetration of ions was
determined using (DPASV) method Which is characterized by Sensitivity and high
accurawcy. The results showed that the optimum adsorption conditions were at pH = 5 ,
equleibrium time = 60 min, and the initial concentration is ( C0 = 50-200) ppm,The
application of the Langmuir and Frienlish models showed that Frienlish model is best fited
for expressing the adsorption of Pb ions on the surface of dry and soft orange peel and for
expressing the adsorption of Cd ions on the surface of soft orange peel , Langmuir model
is best fited for expressing the adsorption of Cd ions on the surface of dry orange peel.
The method applied its selected terms to realistic samples of processed and industrial
waste water, which showed a unique response as a purification method for the water
media.
