Synthetic beverage industrial wastewater was employed for
the adsorption studies. Reagents were prepared by dissolving
AR grade chemicals (Sigma–Aldrich, Germany), in deionized
water.
An experimental solution containing Zn (II) was prepared
by diluting 1 mL of stock solution of the metal to the desired
concentrations. The ranges of concentrations of Zn (II) prepared
from stock solution were varied between 5 and 30 mg/L. The
pH of experimental solution was adjusted by using 0.1N NaOH
and/or 0.1N H2SO4. A stock solution of Zn (II) was obtained by
dissolving the exact quantity of zinc nitrate in deionized water.