Iron nanopowders were mass-produced using liquid-phase reductive precipitation and a rotating packed bed (RPB) with blade packings. The effects of the concentration of the reactants, iron valence, iron source, rotational speed, and flow rates of the reactants on the characteristics of the iron nanopowders were studied. The highest mass-production rate was around 13 kg/day, which was obtained using an FeCl₂ concentration of 0.2 mol/L, an NaBH₄ concentration of 0.4 mol/L, a rotational speed of 1800 rpm, a flow rate of aqueous FeCl₂ of 0.9 L/min, and a flow rate of aqueous NaBH₄ of 0.9 L/min. The mean size of the iron nanopowders that were mass-produced using this process was 42 nm, as determined by TEM. Therefore, an RPB with blade packings can be effectively used in the commercial production of iron nanopowders. The degradation of sulfamethazine (SMT) by persulfate in water was used to evaluate the activity of the iron nanopowders in the activation of persulfate. At 25 °C, a degradation time of 30 min, an initial SMT concentration of 10 mg/L, an iron nanopowders dosage of 0.028 g/L, and an Na₂S₂O₈ concentration of 0.24 g/L, the efficiency of degradation of SMT by the mass-produced iron nanopowders was 97%, which greatly exceeded the 9% that was achieved using commercial iron nanopowders that had been purchased from Alfa Aesar. The results herein indicate that the mass-produced iron nanopowders with persulfate is highly effective for degrading SMT in water.

铁纳米粉使用液相还原沉淀法和带叶片填料的旋转填充床（RPB）进行批量生产。研究了反应物浓度，铁价，铁源，旋转速度和反应物流速对铁纳米粉特性的影响。使用0.2 mol / L的FeCl ₂浓度，0.4 mol / L的NaBH ₄浓度，1800 rpm的转速，FeCl水溶液的流速获得的最高批量生产速率约为13 kg / day。₂为0.9 L / min，NaBH ₄水溶液的流速0.9升/分钟 如通过TEM所确定的，使用该方法大量生产的铁纳米粉末的平均尺寸为42nm。因此，带有叶片填料的RPB可以有效地用于铁纳米粉的商业化生产。过硫酸盐在水中对磺胺二甲嘧啶（SMT）的降解用于评估铁纳米粉在过硫酸盐活化中的活性。在25°C下，降解时间为30分钟，初始SMT浓度为10 mg / L，铁纳米粉剂量为0.028 g / L，Na ₂ S ₂ O ₈当浓度为0.24 g / L时，大量生产的铁纳米粉对SMT的降解效率为97％，大大超过了使用从Alfa Aesar购买的商业铁纳米粉所达到的9％。本文的结果表明，具有过硫酸盐的大量生产的铁纳米粉对于降解水中的SMT非常有效。