摘要：Lanthanum-modified Fe3O4 nano-particles were innovatively immobilized on the bagasse biochar to prepare La-modified magnetic biochar, which demonstrated an especially high adsorption capability for the removal of tetracycline. The magnetic adsorbent was characterized by Fourier transform infrared spectroscopy (FTIR) and zeta potential analysis. Through the FTIR analysis, it could be observed that La/Fe3O4 particles were successfully immobilized on the surface of the bagasse biochar. Zeta potential analysis showed that biochar surface became more negatively charged. Near neutral pH was more favourable for the removal of tetracycline. Elovich and pseudo-second-order kinetic models were better to fit the experimental data, indicating a chemisorption occurred in the adsorption process.
