Scholarlink

<p>To oxidize trivalent arsenic (As(III)) to pentavalent arsenic (As(V)), ferric oxide -loaded activated carbon (Fe/AC) catalysts were prepared by a hydrolysis/co-precipitation method. These catalysts were characterized by X-ray powder diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The effects of the dosage and initial solution pH on the catalytic performance of Fe/AC were assessed using the ozonation of As(III) to As(V) under acidic conditions. According to the results, the ferric oxide-loaded activated carbon (Fe/AC) had good pH adaptability and catalytic activity at pH 0, 1, and 3. The ozonation process was accurately described by the pseudo-first-order kinetics model. The maximum As(V) adsorption capacity was 151.3&#xa0;mg/g when used to treat wastewater with a total concentration of 1710&#xa0;mg/L, which was 1.34 to 8.90 times higher than that of previous works.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Magnetite-Activated Carbon for Catalytic Ozonation of As(III) in Wastewater

  • 期刊论文

  • 发表日期：

    2025年7月23日

查看全文
  • Ruibing Li,
  • Zhihao Ding,
  • Zhixin Yao,
  • Sansan Yu,
  • Ting-an Zhang

摘要

To oxidize trivalent arsenic (As(III)) to pentavalent arsenic (As(V)), ferric oxide -loaded activated carbon (Fe/AC) catalysts were prepared by a hydrolysis/co-precipitation method. These catalysts were characterized by X-ray powder diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The effects of the dosage and initial solution pH on the catalytic performance of Fe/AC were assessed using the ozonation of As(III) to As(V) under acidic conditions. According to the results, the ferric oxide-loaded activated carbon (Fe/AC) had good pH adaptability and catalytic activity at pH 0, 1, and 3. The ozonation process was accurately described by the pseudo-first-order kinetics model. The maximum As(V) adsorption capacity was 151.3 mg/g when used to treat wastewater with a total concentration of 1710 mg/L, which was 1.34 to 8.90 times higher than that of previous works.