EVALUATION OF Ni (II) ADSORPTION ON THE LIGNIN-POLYVINYL ALCOHOL ADSORBENT

Abstract

The adsorption of nickel (II) over adsorbent prepared from lignin and
polyvinyl alcohol (PVA) was investigated. The adsorption of nickel (II) over
lignin-PVA fit well to Langmuir adsorption model. The experiment results
showed that the maximum equilibrium adsorption capacity for Ni(II) was about
8,306 mg/g for lignin-PVA, the adsorption equilibrium time when using ligninPVA was 120 min, optimal pH 5. The elimination of Ni (II) of lignin-PVA in the
plating water about was 75.2%. Therefore, even thought the lignin-PVA material
have some advantages; however there is a need to investigate more thoroughly
the desorption and other impact factors.