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首页> 外文期刊>Journal of Hazardous Materials >Removal of cesium from simulated liquid waste with countercurrent two-stage adsorption followed by microfiltration
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Removal of cesium from simulated liquid waste with countercurrent two-stage adsorption followed by microfiltration

机译：逆流两阶段吸附然后微滤从模拟废液中去除铯

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摘要

Copper ferrocyanide (CuFC) was used as an adsorbent to remove cesium. Jar test results showed that the adsorption capacity of CuFC was better than that of potassium zinc hexacyanoferrate. Lab-scale tests were performed by an adsorption-microfiltration process, and the mean decontamination factor (DF) was 463 when the initial cesium concentration was 101.3 μg/L, the dosage of CuFC was 40mg/L and the adsorption time was 20 min. The cesium concentration in the effluent continuously decreased with the operation time, which indicated that the used adsorbent retained its adsorption capacity. To use this capacity, experiments on a countercurrent two-stage adsorption (CTA)-microfiltration (MF) process were carried out with CuFC adsorption combined with membrane separation. A calculation method for determining the cesium concentration in the effluent was given, and batch tests in a pressure cup were performed to verify the calculated method. The results showed that the experimental values fitted well with the calculated values in the CTA-MF process. The mean DF was 1123 when the dilution factor was 0.4, the initial cesium concentration was 98.75 μg/L and the dosage of CuFC and adsorption time were the same as those used in the lab-scale test. The DF obtained by CTA-MF process was more than three times higher than the single-stage adsorption in the jar test.
机译：亚铁氰化铜（CuFC）被用作吸附剂以去除铯。 Jar测试结果表明，CuFC的吸附能力优于六氰合铁酸钾锌。通过吸附微滤工艺进行实验室规模的测试，当初始铯浓度为101.3μg/ L，CuFC剂量为40mg / L，吸附时间为20分钟时，平均去污因子（DF）为463。随着操作时间的延长，流出物中的铯浓度持续降低，这表明用过的吸附剂保持了其吸附能力。为了利用该能力，在CuFC吸附与膜分离相结合的条件下进行了逆流两阶段吸附（CTA）-微滤（MF）工艺的实验。给出了确定废水中铯浓度的计算方法，并在压力杯中进行了批量测试，以验证所计算的方法。结果表明，在CTA-MF工艺中，实验值与计算值非常吻合。稀释倍数为0.4时，平均DF为1123，铯的初始浓度为98.75μg/ L，CuFC的用量和吸附时间与实验室规模的试验相同。在震击试验中，通过CTA-MF工艺获得的DF比单级吸附高出三倍以上。

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  • 来源
    《Journal of Hazardous Materials》 |2012年第30期|p.107-113|共7页
  • 作者

    Fei Han; Guang-Hui Zhang; Ping Gu;

  • 作者单位

    School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China;

    School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China;

    School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cesium removal; copper ferrocyanide; countercurrent two-stage adsorption; microfiltration;

    机译：铯去除亚铁氰化铜;逆流两阶段吸附;微滤;

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