以生物炭为载体负载壳聚糖、磁性纳米Fe₃O₄制备了一种生物炭负载纳米Fe₃O₄新型吸附剂，考察了其吸附性能及可再生性能。结果表明，在pH为7、温度为30℃、吸附剂投加质量为0.4 g时反应120 min，COD、油、浊度的去除率分别为83.34%、92.21%和97.82%，达到回注水标准。吸附剂经过5次再生后对废水仍有较好的去除效率。新型生物炭复合吸附剂对含油废水有很好的吸附效果，且其优越的再生性可以有效地节约成本。

Biochar-loaded nano-Fe₃O₄ adsorbent, a novel composite adsorbent, is prepared by using biochar as the carrier to load chitosan and magnetic nano-Fe₃O₄, and its adsorption performance and regenerative performance are evaluated.Test results show that the removal rates of COD, oil and turbidity reach 83.34%, 92.21% and 97.82%, respectively when pH=7, the temperature remains at 30℃, adsorbent dosage is 0.4 g and the reaction lasts for 120 min.The water after treatment reaches the standard for re-injection water.After five times of regeneration test, the adsorbent still exhibits high and good removal efficiency for wastewater.This novel biochar composite adsorbent presents good adsorption effect on the oil-containing wastewater, and its superior regeneration performance effectively saves the economic cost.

董晓清(1982-),女,博士,副教授,主要从事水处理技术与设备研发、环境规划与管理以及环境新材料的研发及其应用等研究,dongxq@sziit.edu.cn。