Preparation of magnetic chitosan/Fe-Zr nanoparticles for the removal of heavy metals from aqueous solution

Document Type : Original Article


1 Department of Environmental Health Engineering, International Campus, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

2 Environmental Sciences and Technology Research Center AND Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

3 Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

4 Department of Environmental Health Engineering, School of Public Health, Birjand University of Medical Sciences, Birjand, Iran

5 Department of Environmental Health Engineering, School of Health, Birjand University of Medical Sciences, Birjand, Iran


Copper and hexavalent chromium are heavy metals that are harmful to human health. Natural adsorbent chitosan, due to its considerable properties such as the presence of functional groups of –NH2 and -OH, non-toxicity, low cost, and biocompatibility, has gained much attention in pollutant removal. Therefore, in the present study, adsorption of chromium (VI) and copper (II) ions was conducted in a batch system using magnetic chitosan/Fe-Zr nanoparticles. In addition, the effect of different variables such as contact time, pH, adsorbent dose, initial concentration of heavy metals, and temperature were investigated. The results of the present study indicated that the highest efficiency in removal of chromium (VI) and copper (II) in pH of 4 were 99.52% and 97.72%, respectively. Moreover, adding 0.4 g of the composite at concentration of 5 mg/l can result in up to 97.43% removal of copper (II) and adding 1 g of this composite at the same concentration can result in more than 91% removal of chromium (VI). In addition, it was concluded that increasing the density of the heavy metals did not have a remarkable effect on the removal efficiency. The equilibrium related to adsorbent capacity and the amounts of nanoparticles were obtained using the plots of Langmuir and Freundlich adsorption isotherms for chromium (VI) and copper (II), respectively. The studied adsorbent had a high level of efficiency in the removal of heavy metals from aqueous solutions. 


  1. Naghizadeh A. Comparison between activated carbon and multiwall carbon nanotubes in the removal of cadmium(II) and chromium(VI) from water solutions. J Water Supply Res T 2015; 64(1): 64-73.
  2. Dan Y, Hasfalina CM, Maryam RZ, Luqman CA, Rashid M. 2nd international conference on chemistry and chemical process (ICCCP 2012) May 5-6, 2012adsorption of copper (II) from aqueous medium in fixed-bed column by kenaffibres. APCBEE Procedia 2012; 3: 255-63.
  3. Institute of Standards & Industrial Research of Iran. Water features [Online]. [cited 2013]; Available from: URL:
  5. Tirtom VN, Dincer A, Becerik S, Aydemir T, Celik A. Comparative adsorption of Ni(II) and Cd(II) ions on epichlorohydrincrosslinked chitosan-clay composite beads in aqueous solution. Chemical Engineering Journal 2012; 197: 379-86.
  6. Wan MW, Kan CC, Rogel BD, Dalida ML. Adsorption of copper (II) and lead (II) ions from aqueous solution on chitosan-coated sand. CarbohydrPolym 2010; 80(3): 891-9.
  7. Ngah WSW, Fatinathan S. Adsorption of Cu(II) ions in aqueous solution using chitosan beads, chitosan-GLA beads and chitosan alginate beads. ChemEng J 2008; 143(1-3): 62-72.
  8. Sun X, Peng B, Ji Y, Chen J, Li D. Chitosan(chitin)/cellulose composite biosorbents prepared using ionic liquid for heavy metal ions adsorption. AIChE Journal 2009; 55(8): 2062-9.
  9. Dragan ES, Dinu MV, Timpu D. Preparation and characterization of novel composites based on chitosan and clinoptilolite with enhanced adsorption properties for Cu2+. BioresourTechnol 2010; 101(2): 812-7.
  10. Dinu MV, Dragan ES. Evaluation of Cu2+, Co2+ and Ni2+ ions removal from aqueous solution using a novel chitosan/clinoptilolite composite: Kinetics and isotherms. ChemEng J 2010; 160(1): 157-63.
  11. Huang G, Zhang H, Shi JX, Langrish TA. Adsorption of Chromium(VI) from Aqueous Solutions Using Cross-Linked Magnetic Chitosan Beads. IndEngChem Res 2009; 48(5): 2646-51.
  12. Zhu HY, Fu YQ, Jiang R, Yao J, Xiao L, Zeng GM. Novel magnetic chitosan/poly(vinyl alcohol) hydrogel beads: Preparation, characterization and application for adsorption of dye from aqueous solution. BioresourTechnol 2012; 105: 24-30.
  13. Fan L, Zhang Y, Li X, Luo C, Lu F, Qiu H. Removal of alizarin red from water environment using magnetic chitosan with Alizarin Red as imprinted molecules. Colloids Surf B Biointerfaces 2012; 91: 250-7.
  14. Wang J, Xu W, Chen L, Huang X, Liu J. Preparation and evaluation of magnetic nanoparticles impregnated chitosan beads for arsenic removal from water. ChemEng J 2014; 251: 25-34.
  15. Chen AH, Liu SC, Chen CY, Chen CY. Comparative adsorption of Cu(II), Zn(II), and Pb(II) ions in aqueous solution on the crosslinked chitosan with epichlorohydrin. J Hazard Mater 2008; 154(1-3): 184-91.
  16. Ekhlasi L, Younesi H, Mehraban Z, Bahramifar N. Synthesis and application of chitosan nanoparticles for removal of lead ions from aqueous solutions. Water and Wastewater 2013; 24(1): 10-8.
  17. Sreejalekshmi KG, Krishnan KA, Anirudhan TS. Adsorption of Pb(II) and Pb(II)-citric acid on sawdust activated carbon: Kinetic and equilibrium isotherm studies. J Hazard Mater 2009; 161(2-3): 1506-13.
  18. Chu KH. Removal of copper from aqueous solution by chitosan in prawn shell: adsorption equilibrium and kinetics. J Hazard Mater 2002; 90(1): 77-95.
  19. VasconcelosHelder L, Camargo TP, Gonsalves NS, Neves A, Laranjeira MCM, Favere VT. Chitosan crosslinked with a metal complexing agent: Synthesis, characterization and copper(II) ions adsorption. React FunctPolym 2008; 68(2): 572-9.
  20. Naghizadeh A, Nabizadeh R. Removal of reactive blue 29 dye by adsorption on modified chitosan in the presence of hydrogen peroxide. ENVIRON PROT ENG 2106; 42 (1): 149-168.
  21. Perez-Fonseca A, Gomez C, Davila H, Gonzalez-Nunez R. Chitosan Supported onto Agave Fiber-Postconsumer HDPE Composites for Cr(VI) Adsorption. IndEngChem Res 2012; 51(17): 5939-46.
  22. Liu T, Yang X, Wang ZL, Yan X. Enhanced chitosan beads-supported Fe(0)-nanoparticles for removal of heavy metals from electroplating wastewater in permeable reactive barriers. Water Res 2013; 47(17): 6691-700.
  23. Yu Z, Zhang X, Huang Y. Magnetic Chitosan-Iron(III) Hydrogel as a fast and reusable adsorbent for chromium(VI) removal. Ind Eng Chem Res 2013; 52(34): 11956-66.
  24. Keng PS, Lee SL, Ha ST, Hung YT, Ong ST. Removal of hazardous heavy metals from aqueous environment by low-cost adsorption materials. Environ ChemLett 2014; 12(1): 15-25.
  25. Swayampakula K, Boddu VM, Nadavala SK, Abburi K. Competitive adsorption of Cu (II), Co (II) and Ni (II) from their binary and tertiary aqueous solutions using chitosan-coated perlite beads as biosorbent. J Hazard Mater 2009; 170(2-3): 680-9.
  26. Zareie C, Najafpour G, Sharifzadeh M. Preparation of Nanochitosan as an Effective Sorbent for the Removal of Copper Ions from Aqueous Solutions. Int J Eng 2013; 26(8): 829.