Removal of bisphenol A (2,2-bis(4-hydroxyphenyl)propane, BPA) was investigated through the hydrogen peroxide (H2O2)-dependent tyrosinase catalyzed quinone conversion and subsequent quinone adsorption on chitosan beads. The activity of mushroom tyrosinase to BPA increased by adding H2O2; BPA was thus effectively converted into quinone derivatives. The optimum conditions for quinone conversion were determined in the presence of H2O2 at 0.3-0.4 mM at pH 6.0-7.0 and 40-45°C. When chitosan beads were added to BPA solutions containing BPA and H2O2, quinone conversion was enhanced; the quinone derivatives generated were adsorbed on chitosan beads. An increase in the amount of chitosan beads added to BPA solutions accelerated adsorption of quinone derivatives. BPA was completely removed at the amount of added chitosan beads of 0.050 mL/mL or more. This procedure is more effective than the homogeneous removal procedure using chitosan solutions, giving higher removal rates in shorter reaction times.