通过水浴交联的方式将壳聚糖负载到活性炭表面上，制备成复合吸附剂并利用扫面电镜和傅里叶变换红外光仪对其进行表征。研究活性炭复合剂对水中腐殖酸（HA）的吸附性能及吸附机理，研究结果表明，相比单一活性炭，活性炭复合剂对溶液中腐殖酸的吸附量提高了5 mg/g左右，其吸附量随着pH值的减小、吸附时间的延长和阳离子浓度的增加而增大。HA在复合剂上的吸附动力学符合准二级动力学模型，吸附等温线可以用Langmuir方程模拟，热力学分析表明其吸附过程是放热反应而且能够自发进行.复合剂脱附再生性好,可循环使用.这对充分发挥活性炭和壳聚糖两者利用价值,提高饮用水水质和安全具有积极意义.

Preparation of crosslinked chitosan/activated carbon composite adsorbent by water bath, composite adsorbent was characterized by scanning electron microscopy and fourier transform infrared spectroscopy, and tested for humic acid (HA) removal. The experimental results showed that compared with original activated carbon (AC), the HA adsorption capacity of compound adsorbent increased by 5mg/g. Acidic condition was beneficial to HA removal and cations all exhibited promotion on the uptake of HA. The HA adsorption capacity of compound adsorbent increased with the increase of adsorption time. The adsorption kinetics of HA removal by composite adsorbent agreed well with the pseudo-second-order model (R2 ≥ 0.99), and the adsorption isotherms were well fitted by the Langmuir model. The thermodynamic analysis suggested that HA removal by composite adsorbent was a spontaneous and endothermic process. The compound adsorbent can be recycled because of its good desorption and regeneration. It is positive meaning to give full play to value of AC and chitosan, and improve the quality and safety of drinking water.