Journal article

Alginate-graphene oxide hybrid gel beads: An efficient copper adsorbent material

Wafa M Algothmi, Narasimha Murthy Bandaru, Yang Yu, Joseph G Shapter, Amanda V Ellis

JOURNAL OF COLLOID AND INTERFACE SCIENCE | ACADEMIC PRESS INC ELSEVIER SCIENCE | Published : 2013

Abstract

Here we report on the adsorption performance of calcium alginate (Ca-Alg2) and Ca-Alg2 with encapsulated graphene oxide (Ca-Alg2/GO) gel bead adsorbents for the successful removal of Cu(2+) ions from aqueous solution. Different adsorbent doses, Cu(2+) concentrations and contact times were investigated using equilibrium and kinetic studies. The adsorbents were characterized using Fourier transform-infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA) and focussed ion beam scanning electron microscopy (FIB/SEM). The equilibrium adsorption data were fitted to Langmuir isotherms and the maximum adsorption capacities of the Ca-Alg2 and Ca-Alg2/GO gel beads were found to be 42.7 mg g(-1)..

View full abstract

University of Melbourne Researchers