T he Ca-Al-Zn layered double hydroxide (LDh) which synthesized by the co-precipitation method and its calcined product was used in the removal of Cu(II) from aqueous solutions.At optimum conditions, the calcined Ca-Al-Zn LDh product has a higher potential application in the cupreous ion's adsorption field (45.2mg/g) than the uncalcined LDH (38.8mg/g).Langmuir and Freundlich models were used to opt...