Nanoscale zero-valent iron particles (nZVI) immobilized by Enteromorpha prolifera based-activated carbons were applied for Chloramphenicol (CAP) treatment. The porous structure, morphology and chemical composition of as-synthesized adsorbents were detected by scanning electron microscope (SEM), transmission electron microscope (TEM), N₂ adsorption–desorption isotherms, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The kinetics models (pseudo-first-order and pseudo-second-order model) and isotherms models (Langmuir, Freundlich and Temkin model) were introduced to investigate the CAP removal mechanisms, and the degradation products were analyzed using 3D-EEM fluorescence, Ultraviolet-visible spectroscopy (UV–VIS) and mass spectrograph. The modified nZVI exhibited excellent removal capacity for CAP (545.25 mg/g) because of the cooperative effects of adsorption and degradation of nZVI/AC system. Thermodynamic parameters revealed an endothermic, spontaneous and feasible process for nZVI/AC with a tendency of out-of-order. Besides, 3D-EEM fluorescence and UV–VIS analysis implied that could be thoroughly decomposed by nZVI/AC but decomposition of CAP was less efficient by the nZVI. According to the degradation products of CAP analyzed utilizing mass spectrometry, dechlorination by radicals was inferred to be the potential degradation routine of CAP by nZVI/AC.

将基于Enteromorpha prolifera的活性炭固定的纳米级零价铁颗粒（nZVI）用于氯霉素（CAP）处理。通过扫描电子显微镜（SEM），透射电子显微镜（TEM），N ₂检测合成后吸附剂的多孔结构，形貌和化学组成。吸附-解吸等温线，X射线衍射（XRD）和X射线光电子能谱（XPS）。介绍了动力学模型（伪一阶和伪第二阶模型）和等温线模型（Langmuir，Freundlich和Temkin模型）以研究CAP的去除机理，并使用3D-EEM荧光，紫外光分析了降解产物。可见光谱（UV-VIS）和质谱仪。由于nZVI / AC系统吸附和降解的协同作用，改性的nZVI对CAP的去除能力极佳（545.25 mg / g）。热力学参数揭示了nZVI / AC的吸热，自发和可行过程，并且具有乱序的趋势。除了，3D-EEM荧光和UV-VIS分析表明，nZVI / AC可以彻底分解它，但是nZVI可以降低CAP的分解效率。根据质谱分析的CAP降解产物，nZVI / AC推断自由基脱氯是CAP潜在的降解途径。