Fe3O4@seabuckthorn carbon was prepared by impregnating seabuckthorn branches with Fe3+ and then thermal cracked under 500℃. SEM and EDS results showed that the Fe3O4 nanoparticles prepared had a size of ~ 40 nm, which were discretely distributed on the carbon surface. Moreover, XRD results indicated that the Fe3O4 nanoparticles were under face-centered cubic crystal structure, while the seabuckthorn carbon was amorphous. The prepared Fe3O4@seabuckthorn carbon was used as adsorbents to treat doxycycline-containing wastewater and the results showed that this adsorbent had high adsorption capacity under alkaline conditions (pH=10), and the adsorption capacity increased first and reached equilibrium after 3.0 h. Furthermore, the results showed that the adsorption followed pseudo-second-order kinetics with correlation coefficient R2 >0.99, and the adsorption isotherms can be fitted better by Freundlich equation than Langmuir equation. Thermodynamic results (ΔG0<0 andΔH0>0) indicated the adsorption process was spontaneous and endothermic, andΔS0>0 meant it was irreversible. The adsorbents can be regenerated in-situ by heterogeneous Fenton reaction with 6%(wt) H2O2, and doxycycline removal efficiency declined by 19.1% after regeneration.%废弃沙棘枝条经浸渍Fe3+，在500℃下热裂解制备了Fe3O4@沙棘枝炭复合吸附剂。SEM和EDS结果表明纳米Fe3O4颗粒粒径约为40 nm，在炭表面呈孤岛状、单层、单分散覆盖。XRD表明生成的纳米Fe3O4为面心立方晶型，沙棘枝炭为无定形。以强力霉素废水为处理对象，吸附剂在碱性条件下(pH=10)表现出较好的吸附能力，吸附量随着时间的延长而增加，并且在3.0 h之后达到平衡。吸附过程遵循准二级动力学方程，相关系数R2在0.99以上。吸附等温线较好地符合Freundlich等温模型，其拟合度为0.934，明显优于Langmuir模型。ΔG0<0且ΔH0>0，说明吸附是自发吸热过程。ΔS0>0表明吸附过程不可逆。添加质量浓度为6%的H2O2，Fe3O4@沙棘枝炭复合吸附剂可经过非均相Fenton反应实现原位再生，二次使用时强力霉素吸附效率下降19.1%。
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