earticle

영어

Heavy metals often coexist in contaminated wastewater systems and their competitive behavior could affect the adsorption capacity of biochar. The present investigation deals with the utilization of biochar derived from the Mulberry Tree (MBC) and Rice Husk (RBC) as an adsorbent for the removal of heavy metal ions from individual metal ions and mixed-metal solutions of Cd(II), Pb(II), and Zn(II). The mutual effects and inner mechanisms of their adsorption on studied biochar were systematically investigated via single-metal, binary-metals and Tranry-metal systems. The maximum adsorption capacities of metal ions in single-metal solution by MBC and RBC were Pb(II) 0.4119, Zn(II) 0.0892, Cd(II) 0.0573 mmol/g and Pb(II) 0.0602, Zn(II) 0.0297, Cd(II) 0.0201 mmol/g, However, the adsorption of Pb(II), Zn(II) and Cd(II) was inhibited in the binary-metal and Tranry-metal systems. The competitive adsorption in multi-metal systems was predicted by competitive adsorption models.