Biosorption Characteristics of Water Hyacinth (Eichhornia crassipes) in the Removal of Nickel (II) Ion under Isothermal Condition

Water Hyacinth for Nickel (II) Removal

  • Chidi Obi Physical Chemistry Unit, Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Port Harcourt, Rivers State, Nigeria
  • Sylvester Eigbiremonlen Physical Chemistry Unit, Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Port Harcourt, Rivers State, Nigeria
DOI: https://doi.org/10.52763/PJSIR.PHYS.SCI.59.2.2016.118.120
Keywords: monolayer biosorption, water hyacinth, nickel removal

Abstract

This study was taken to investigate the potentiality of water hyacinth (Eichhornia crassipes) as an alternative biosorbent for the removal of Ni (II) ion from aqueous solution. The optimum pH, contact time and concentration were found to be 6.0, 40 min and 1.0 mg/L under isothermal condition. The biosorption of Ni (II) ion was found to decrease with increasing pH, initial concentration and contact time. Results obtained were analysed with Langmuir and Freundlich biosorption models. The equilibrium data fitted well to the Langmuir biosorption model with correlation coefficient (R2) value of 0.98. The monolayer adsorption capacity was 0.29 mg/g. The removal of Ni (II) ion from aqueous solution using water hyacinth biomass followed a monolayer biosorption.

Published
2016-06-24
Issue
Vol 59 No 2 (2016): Pakistan Journal of Scientific and Industrial Research Series A: Physical Sciences
Section
Articles