Waters are often polluted by antibacterial drugs such as sulfonamides, which are widely used in animal husbandry, aquaculture and other sectors. Actual decontamination methods are limited, thus requiring the development of alternative treatments. Here, we hypothesized that a composite of biochar-supported Fe/Cu (FeCu-biochar) would activate persulfate to remove the antibiotic sulfapyridine from aqueous solutions using batch experiments. FeCu-biochar was characterized by scanning electron microscopy with energy-dispersive spectroscopy (SEM–EDS) and X-ray diffraction (XRD). We tested the effect of catalyst type, initial pH and reusability runs. Results show that, compared to Fe-biochar, 1 g/L FeCu-biochar activated 4 mM persulfate better, removing 97.6% of 20 mg/L sulfapyridine in 5 min at pH 8.2. Such enhancement is attributed to the strong oxidization of ^·SO₄⁻, the high catalytic ability of CuO and synergistic effects between Fe and Cu. The removal of sulfapyridine by FeCu-biochar was pH-dependent, and the best catalytic performance occurred in alkaline conditions. FeCu-biochar also displayed excellent stability, easy separation and good recyclability.

水域经常被抗菌药物（如磺胺类药物）污染，该类药物广泛用于畜牧，水产养殖和其他领域。实际的去污方法是有限的，因此需要开发替代疗法。在这里，我们假设使用批处理实验，由生物炭负载的Fe / Cu（FeCu-biochar）的复合物会活化过硫酸盐以从水溶液中去除抗生素磺胺吡啶。FeCu生物炭的特征是通过能量分散光谱（SEM-EDS）和X射线衍射（XRD）的扫描电子显微镜进行表征。我们测试了催化剂类型，初始pH和可重复使用性的影响。结果表明，与Fe-biochar相比，1 g / L FeCu-biochar更好地活化了4 mM过硫酸盐，在5分钟内在pH 8.2下去除了97.6％的20 mg / L磺胺吡啶。^· SO ₄ ^-，CuO的高催化能力和Fe和Cu之间的协同效应。FeCu-生物炭去除磺胺吡啶的pH值取决于pH，在碱性条件下具有最佳的催化性能。FeCu生物炭还显示出极好的稳定性，易于分离和良好的可回收性。