Clean Technologies and Environmental Policy

, Volume 19, Issue 3, pp 761–774 | Cite as

Cadmium removal potential by rice straw-derived magnetic biochar

  • Zhongxin Tan
  • Yuanhang Wang
  • Alfreda Kasiulienė
  • Chuanqin Huang
  • Ping Ai


Cadmium removal from wastewater is a difficult problem, so our aim was to develop a novel biochar and method of biochar preparation for the high-efficiency removal of cadmium. First, common biochars created using different pyrolysis conditions were tested to determine the best absorbance using the iodine absorption test. Magnetic biochar was prepared using a one-step synthesis by treating rice straw with Fe2+/Fe3+ and pyrolizing using the working conditions that exhibited the best absorbance. Second, the prepared biochars were used as adsorbents for Cd(II) removal from a solution. The magnetic biochar showed high efficiency for the removal of Cd(II): up to 91 %. This rate is much greater than that of the original biochar.


Biochar Magnetic biochar Cadmium 



This study was supported by the National Natural Science Foundation of China (No. 41571283).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Zhongxin Tan
    • 1
  • Yuanhang Wang
    • 1
  • Alfreda Kasiulienė
    • 2
  • Chuanqin Huang
    • 1
  • Ping Ai
    • 3
  1. 1.College of Resources and EnvironmentHuazhong Agricultural UniversityWuhanPeople’s Republic of China
  2. 2.Institute of Environment and EcologyAleksandras Stulginskis UniversityKaunasLithuania
  3. 3.College of EngineeringHuazhong Agricultural UniversityWuhanPeople’s Republic of China

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