Removal of Cu (II), Ni (II), and Co (II) ions from aqueous solution using low cost adsorbent: Isotherms, kinetics and equilibrium aspects

Nagwa Badawy, Amina El-Bayaa, Enas Amdeha
2015 Journal of Chemical and Pharmaceutical Research   unpublished
Environmental protection becomes a difficult task as many industries produce wastes that cause serious pollution. An industrial solid waste of sugarcane had been converted into an inexpensive and effective adsorbent to be used for the removal of some metal from aqueous solution. Effect of various parameters e.g., metal ion concentration, adsorbent dose, solution pH, and contacting time on the removal of Cu (II), Ni (II), and Co (II) ions had been studied. Maximum adsorption of Cu (II), Ni (II),
more » ... f Cu (II), Ni (II), and Co (II) ions were 78 %, 72%, and 69 %, occurred at metal ion concentration 70 ppm and at pH value of 6.5, 6.0 and 6.0, respectively. A dose of 14 g/l of adsorbent was sufficient for the optimum removal of metal ions. The material exhibits good adsorption capacity and the adsorption data follow the Langmuir model better than the Freundlich model. Kinetic parameters of adsorbent for the removal of each metal ion from wastewater were studied.