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Degradation of ultrahigh concentration pollutant by Fe/Cu bimetallic system at high operating temperature

  • Environmental Engineering
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Abstract

To investigate the degradation of high concentration pollutant by Fe/Cu bimetallic system at a high operating temperature, 10,000mg/L acid orange 7 (AO7) aqueous solution was treated by Fe/Cu bimetallic system at 80 oC. First, the effect of the operating temperature (30-80 °C) on the reactivity of Fe/Cu bimetallic particles was investigated thoroughly. Then, the studies on the effect of theoretical Cu mass loading, Fe/Cu dosage, stirring speed and initial pH on the reactivity of Fe/Cu bimetallic particles at a high temperature (i.e., 80 °C) were carried out, respectively. The degradation and transformation process of AO7 was studied by using COD, TOC and UV-Vis spectra. The results indicate that high concentration pollutant could be removed effectively by Fe/Cu bimetallic system at a high operating temperature. And the removal efficiencies of AO7 by Fe/Cu bimetallic system were in accordance with the pseudofirst- order model. Finally, it was observed that the high temperature could accelerate mass transport rate and overcome the high activation energy barrier to significantly improve the reactivity of Fe/Cu bimetallic particles. Therefore, the higher removal efficiency could be obtained by Fe/Cu system at a high operating temperature. Thus, the high operating temperature played a leading role in the degradation of high concentration pollutant.

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Authors and Affiliations

  1. Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu, 610065, China

    Bo Lai, Qingqing Ji & Yue Yuan

  2. Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing Climate Change Response Research and Education Center, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China

    Donghai Yuan

  3. Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China

    Yuexi Zhou & Juling Wang

Authors
  1. Bo Lai
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  2. Qingqing Ji
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  3. Yue Yuan
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  4. Donghai Yuan
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  5. Yuexi Zhou
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  6. Juling Wang
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Correspondence to Bo Lai or Donghai Yuan.

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Lai, B., Ji, Q., Yuan, Y. et al. Degradation of ultrahigh concentration pollutant by Fe/Cu bimetallic system at high operating temperature. Korean J. Chem. Eng. 33, 207–215 (2016). https://doi.org/10.1007/s11814-015-0135-6

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  • DOI: https://doi.org/10.1007/s11814-015-0135-6

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