Study on Adsorption Capacities of Heavy Metals in Biofilms Grown on Magnetic Carriers

Abstract

Abstract-The adsorption capacities of heavy metals in biofilms have the potential advantage of high efficiency. More and more attention has been paid to the study of the adsorption of heavy metals in biofilms. This study designed four reactors to test the adsorption capacities of heavy metals in biofilms grown on three kinds of magnetic carriers and one kind of non-magnetic carriers. The results showed that the heavy metal adsorption capacities of biofilms grown on the magnetic carriers were more than that of biofilms grown on the non-magnetic carriers, and the adsorption capacities of biofilms grown on the magnetic carriers increased with the increasing of the strontium ferrite powder components contained in the carriers and influenced the magnetic field strength. This paper made a beneficial attempt to study on utilizing the magnetic carriers to biologically restore the water polluted by heavy metals.