Para-magnetic polyvinylbutyral particles containing activated carbon as a new adsorbent

In this study, a new type of magnetic particle was prepared in a uniform and spherical form for the range of 750 mum <D-p <1000 mum from commercially available polyvinylbutyral (Mowital B30H, Hoechst), magnetite, and activated carbon using solvent evaporation technique. Magnetite (D-p <5 mu m) was successfully embedded in the adsorbent particles. The surface and cross-sectional views of p -magnetic particles were investigated with a Scanning Electron Microscope (SEM). The intensity of magnetization was measured with a vibrating-sample magnetometer. The adsorption studies of phenol and chromium (Cr(VI)) onto the adsorbent particles were carried out batch-wise. The effects of activated carbon and magnetite percentages on the adsorption capacity were investigated, and different initial adsorbate concentration and pH values were examined. Desorption experiments were carried out with different concentrations of NaOH, and it was determined that approximately 95% of adsorbed ions were desorbed. It was concluded that the para-magnetic polyvinylbutyral particles containing activated carbon and magnetite could effectively be used in the adsorption of organic and inorganic pollutants.