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A new composite adsorbent, nano-Fe3O4/bacterial cellulose(BC), was prepared through blending method. The process of adsorbing Cd2+ including its isotherm and kinetics measured was studied. The results show that the adsorption efficiency is improved because of huge surface area and surface coordination of nano-Fe3O4 particles. Its adsorption capacity is 27.97 mg/g and the maximum of Cd2+ removal is 74%. The adsorption kinetics can be described by pseudo-second rate model and the adsorption equilibrium by Langmuir type. The superparamagnetism of nano-Fe3O4 particles can help to solve the difficult separation of single BC adsorbent and lead to the quick separation of composite adsorbent from the liquid if a magnetic field was applied. Cd2+ can be desorbed effectively by EDTA and HCl from the composite adsorbent, which can make it be reused.
A new composite adsorbent, nano-Fe3O4 / bacterial cellulose (BC), was prepared through blending method. The process of adsorbing Cd2 + including its isotherm and kinetics measured was studied. The results show that the adsorption efficiency is improved because of huge surface area and Surface adsorption of nano-Fe3O4 particles. Its adsorption capacity is 27.97 mg / g and the maximum of Cd2 + removal is 74%. The adsorption kinetics can be described by pseudo-second rate model and the adsorption equilibrium by Langmuir type. The superparamagnetism of nano -Fe3O4 particles can help to solve the difficult separation of single BC adsorbent and lead to the quick separation of composite adsorbent from the liquid if a magnetic field was applied. Cd2 + can be desorbed effectively by EDTA and HCl from the composite adsorbent, which can make it be reused.