Removal of Hexavalent Chromium from Aqueous Using Biochar Supported Nanoscale Zero-Velent Iron

  • Weilin Shi
  • Xue Song
Conference paper
Part of the Springer Proceedings in Energy book series (SPE)


A novel biochar carried nanoscale zero-valent iron (NZVI) particles were synthesized by means of liquid phase reduction method that can overcome the aggregation of NZVI particles. The Composite material of the biochar-NZVI can effectively improve the removing rate of hexavalent chromium Cr(VI) in the application of water treatment. The experimental results showed that the remove rate of Cr(VI) was up to 96.8% by using biochar-NZVI when the mass ratio of biochar and NZVI was of 5:1, the rate was enhanced by about 35.9% than that of the same dose pure NZVI. The analyzed results of TEM and BET showed that the biochar-NZVI had higher dispersion and specific surface area than pure NZVI, which was the key reason for biochar-NZVI with high removing efficiency of Cr(VI). The apparent rate constant kobs decreases from 0.1041 to 0.0235 min−1 as the initial concentration of Cr(VI) increased from 25 to 125 mg/L in the solution, indicating that the reaction velocity decreases with the increased initial concentration of Cr(VI) in the solution. The removal efficiency reached to 92.1% when the pH value of the solution containing biocha-NZVI treating Cr(VI) increased from 4.48 to 8.36, showing that the biochar carried NZVI has high removing rate of Cr(VI) in a wide range of pH value.


Biochar Nanoscale zero-valent iron Hexavalent chromium Removal 



This work is supported in parts by the National Natural Science Foundation of China (No. 31570515) and the Scientific Project Program of Suzhou City (No. SYN201511).


  1. 1.
    G. Quan, J. Zhang, J. Guo, Y. Lan, Removal of Cr (VI) from aqueous solution by nanoscale zero-valent iron grafted on acid-activated attapulgite. Water Air Soil Pollut 225, 1979–1989 (2014)Google Scholar
  2. 2.
    C. Yan, W. Chen, L. Pan, Q. Wang, Removal of lead in water by nano zero valent iron loaded on bentonite. J. Water Resour Water Eng (in Chinese), 24, 20–24 (2013)Google Scholar
  3. 3.
    Q. Zhao, Q. Zhao, H. Wang, H. Yu, Z. Hui, Review of biochar soil improvement mechanism and the application prospect in our country tropical area. Chin. J. Trop. Agric. (in Chinese), 34, 53–57 (2014)Google Scholar
  4. 4.
    Y. Zhou, B. Gao, A.R. Zimmerman, H. Chen, M. Zhang, X. Cao, Biochar-supported zero valent iron for removal of various contaminants from aqueous solutions. Bioresour Technol 152, 538–542 (2014)Google Scholar
  5. 5.
    M. Avila, T. Burks, F. Akhtar, M. Göthelid, P.C. Lansåker, M.S. Toprak, M. Muhammed, A. Uheida, Surface functionalized nanofibers for the removal of chromium (VI) from aqueous solutions. Chem. Eng. J. 245, 201–209 (2014)Google Scholar
  6. 6.
    Y. Wang, Z. Fang, B. Liang, E.P. Tsang, Remediation of hexavalent chromium contaminated soil by stabilized nanoscale zero-valent iron prepared from steel pickling waste liquor. Chem. Eng. J. 247, 283–290 (2014)Google Scholar
  7. 7.
    H. Jabeen, V. Chandra, S. Jung, J.W. Lee K.S. Kim, S.B. Kim, Enhanced Cr(VI) removal using iron nanoparticle decorated graphene. Nanoscale 3, 3583–3585 (2011)Google Scholar
  8. 8.
    Z. Liu, F. Zhang, J. Wu, Characterization and application of chars produced from pinewood pyrolysis and hydrothermal treatment. Fuel 89, 510–514 (2010)Google Scholar
  9. 9.
    J. Yan, L. Han, W. Gao, S. Xue, M. Chen, Biochar supported nanoscale zerovalent iron composite used as persulfate activator for removing trichloroethylene, Biores Technol 175, 269–274 (2015)Google Scholar
  10. 10.
    Q. Wang, S. Snyder, J. Kim, Aqueous Ethanol modified nanoscale zerovalent iron in bromate reduction: synthesis, characterization, and reactivity. Environ. Sci. Technol. 43, 3292–3299 (2009)Google Scholar
  11. 11.
    X. Wang, C. Chen, H. Liu, J. Ma, Characterization and evaluation of catalytic dechlorination activity of Pd/Fe bimetallic nanoparticles. Indus. Eng. Chem. Res. 47, 8645–8651 (2008)Google Scholar
  12. 12.
    Z. Dai, J. Meng,. N. Muhammad, X. Liu, H. Wang, Y. He, P.C. Brookes, J. Xu, The potential feasibility for soil improvement, based on the properties of biochars pyrolyzed from different feedstocks. J. Soils Sed. 13, 989–1000 (2013)Google Scholar
  13. 13.
    J. Chen, J. Zhu, Z. Da, H. Xu, J. Yan, H. Ji, H. Shu, H. Li, Improving the photocatalytic activity and stability of graphene-like BN/AgBr composites. Appl. Surf. Sci. 313, 1–9 (2014)Google Scholar
  14. 14.
    Z. Chen, Y. Cheng, Z. Chen, M. Mallavarapu, N. Ravendra, Kaolin-supported nanoscale zero-valent iron for removing cationic dye-crystal violet in aqueous solution. J. Nanoparticle Res. 14, 899 (2012)Google Scholar
  15. 15.
    H. Zhu, Y. Jia, X. Wu, H. Wang, Removal of arsenic from water by supported nano zero-valent iron on activated carbon. J. Hazard. Mat. 172, 1591–1596 (2009)Google Scholar
  16. 16.
    R. Venkatapathy, D.G. Bessingpas, S. Canonica, J.A. Perlinger, Kinetics models for trichloroethylene transformation by zero-valent iron. Appl. Catal B: Environ. 37, 139–159 (2002)Google Scholar
  17. 17.
    N. Melitas, J.P. Wang, C.M. Peggy, F. James, Understanding soluble arsenate removal kinetics by zerovalent iron media. Environ. Sci. Technol. 36, 2074–2081 (2002)Google Scholar
  18. 18.
    X. Li, J. Cao, W. Zhang, Stoichiometry of Cr (VI) immobilization using nanoscale zerovalent iron (nZVI): a study with high-resolution X-ray photoelectron Spectroscopy (HR-XPS). Indus. Eng. Chem. Res. 47, 2131–2139 (2008)Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.School of Environmental Science and EngineeringSuzhou University of Sciences and TechnologySuzhouChina

Personalised recommendations