Adsorption of modified magnetic biochar on acid orange 7
In the study,bamboo hydrothermal carbon(BC)was used as the substrate and was loaded with Fe3O4 magnetic material to be magnetic,while layered double hydroxide(LDH)was grown on the surface of magnetic hydrothermal carbon by co-precipitation method to improve the adsorption performance.The prepared materials were used for the adsorption of acid or-ange 7.The effects of different pH,ion concentration,water quality,micro plastics and humic acids were investigated,and the mechanism of the adsorption process was analyzed through characterization methods including SEM,BET,XRD,FT-IR and VSM.The results showed that the adsorption was consistent with the Langmuir model and pseudo-second-order kinetic model.The equilibrium adsorption amount can reach 271.64 mg·g-1 at 40 ℃.The adsorbent has a good cyclic adsorption effect,and it still has a good removal rate after four cycles.
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