Olive biosorbent

Olive biosorbent (OB): Olive tree legs and green leaves were cut to small particle size then washing with water, drying at 250 ?C and blending using food blender. Carboxy olive biosorbent (COB) preparation: 100 g of OB with 80 mL of concentrated HNO3 were heating in a beaker until brown foams finished, then washing with distilled water and methanol then drier at 80 ?C.
Olive/oleic bio-alkyd resin (OOBAR) Preparation: A 85 g of oleic acid with 28 g of glycerol were heated for 6 h. Then the product was heated with 15 g biosorbent 6 h, followed by adding 15 g of phthalic anhydride then heated 6 h. The final product was washed with distilled water then methanol and left to dry at room temperature then blending and sifting at 355 µm (0.0355 cm).