It is well known that the adsorption capacity of particles is stronger than that of film due to the high specific surface area. Nonetheless, it is a bit different in some cases because of the plane enhancement effect of film. The third-generation cephalosporin are commonly used for either prevention or treatment of bacterial infections. These antibiotics, which have been discharged into various water environment, have created a lot of serious problems in our world. Adsorption of cefotaxime (CTX) in water by the chitosan particles (CSp) and films (CSf) were explored. The samples were characterized by scanning electron microscopy, the nitrogen adsorption isotherms, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and others. Various experimental conditions (pH, adsorption time, molecular weight of CSf, initial antibiotic concentrations, the number of films and foreign ions) presented an important influence on CTX removal. The pseudo-second-order kinetics and Freundlich isotherm models better illustrated the adsorption behavior of CTX on CSf, and the highest adsorption capacity was 1003.64 mg g⁻¹, far above CSp (648.05 mg g⁻¹) and these reported adsorbents. The reusability experiments revealed that CSf had passable regeneration and continuous usage performance. Multiple analysis factors suggested that the mechanism of CTX adsorption on CSf was mainly based on plane strengthening effect, electrostatic attraction, nucleophilic addition reaction and hydrogen bonding. These findings showed that CSf was an efficient and reusable adsorbent for antibiotics elimination in water.

众所周知，由于高的比表面积，颗粒的吸附能力强于薄膜。尽管如此，由于胶片的平面增强效果，在某些情况下它还是有些不同。第三代头孢菌素通常用于预防或治疗细菌感染。这些已排放到各种水环境中的抗生素在我们的世界中造成了许多严重的问题。研究了壳聚糖颗粒（CSp）和薄膜（CSf）在水中对头孢噻肟（CTX）的吸附。通过扫描电子显微镜，氮吸附等温线，傅立叶变换红外光谱（FTIR），X射线光电子能谱（XPS）等对样品进行表征。各种实验条件（pH，吸附时间，CSf的分子量，初始抗生素浓度，薄膜数量和外来离子）对CTX的去除产生了重要影响。拟二级动力学和Freundlich等温模型更好地说明了CTX在CSf上的吸附行为，最高吸附容量为1003.64 mg g^-1，远高于CSp（648.05 mg g ^-1）和这些报告的吸附剂。可重用性实验表明CSf具有良好的再生能力和连续使用性能。多种分析因素表明，CTX在CSf上的吸附机理主要是基于平面强化作用，静电吸引，亲核加成反应和氢键作用。这些发现表明，CSf是一种有效和可重复使用的吸附剂，用于水中的抗生素消除。