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A Critical Review on Iron-Enhanced Constructed Wetland System: Mechanisms and Application Scope

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Abstract

Constructed wetland system (CWs), as an effective ecological technology to deal with water pollution, has the advantages of good load adaptability, simple construction process, and low maintenance cost. However, the technology has some bottlenecks such as low operating efficiency and low pollutant removal rate. Iron (Fe) is a non-toxic and non-polluting element widely distributed in the nature and closely related to the removal of pollutants. Applying iron materials in CWs can improve their pollutant removal rate. This paper summarizes the decontamination mechanisms and application status of CWs and introduces the application of iron materials and the mechanisms of iron materials in enhanced CWs. In addition, the application scope of iron-enhanced CWs and its shortcomings are given. The future development direction of iron-enhanced CWs is pointed out to provide new ideas for the subsequent optimization of CWs.

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Acknowledgements

The authors greatly appreciated the support from the National Natural Science Foundation of China (51909157), Open Foundation of Hebei Key Laboratory of Wetland Ecology and Conservation, and Shanghai River and Lake Biological Chain Construction and Resource Utilization Engineering Technology Research Center (20DZ2250700).

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  1. Zhimiao Zhao

    Present address: College of Marine Ecology and Environment, Engineering Research Center for Water Environment Ecology in Shanghai, Shanghai Ocean University, Shanghai, China

Authors and Affiliations

  1. College of Marine Ecology and Environment, Engineering Research Center for Water Environment Ecology in Shanghai, Shanghai Ocean University, Shanghai, China

    Mengqi Cheng, Xiao Li, Xiangxiang Jiao & Yinjiang Zhang

  2. Environmental Science and Technology Doctorate School, Autonomous University of Barcelona, Barcelona, Spain

    Mengqi Cheng

  3. Shanghai River and Lake Biological Chain Construction and Resource Utilization Engineering Technology Research Center, Shanghai, China

    Zhimiao Zhao

Authors
  1. Mengqi Cheng
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  2. Xiao Li
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  3. Xiangxiang Jiao
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  4. Zhimiao Zhao
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Correspondence to Zhimiao Zhao.

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Cheng, M., Li, X., Jiao, X. et al. A Critical Review on Iron-Enhanced Constructed Wetland System: Mechanisms and Application Scope. Water Air Soil Pollut 233, 524 (2022). https://doi.org/10.1007/s11270-022-05985-z

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