In this work the use of natural magnetite in coast sand of Wadi-kandil area in Syria
in removal of Methylene Blue (MB) from aqueous solution was studied.
The XRD measurements showed that the sample contents the crystalline magnetite
and another co
mpounds. The magnetite in the simple was separated using magnetic
method and the percentage of magnetite in the sample about 70 %.
After separating the magnetite was used to removal the MB from aqueous solution at
different initial concentration of MB (5 , 10 , 20 , 40 , 60 mg/l ) and using different dosage
of magnetite (0.2 , 0.5 , 1 g) at different values of pH and temperature 25° C.
The adsorption of MB increasing by increasing initial concentration of MB and decreasing
by increasing of pH value and the removal of MB was clearly increased when the dosage
of magnetite was increased , the removal values were 47.8% , 84.9% , 88.7% for magnetite
dosage (0.2 , 0.5 , 1 g) respectively at concentration 5 mg/l of MB . While the adsorbed
amount of MB per mass unit of magnetite was decreased because the adsorption sites
weren't saturated.
The Treatment of adsorption data according Lngmuere and Frenglish models showed
that the adsorption process accrued on the energetic homogeneous and heterogeneous sites.
