Adsorption of Mercury (II) Metal from Aqueous Solutions by Amine-Functionalized Magnetic Nano-particles

Subject Areas : Environment Pullotion (water and wastewater)

Ali kazemi ¹ , nader bahramifar ² , Akbar Heydari ³

1 - Assistant Professor of Environmental Science, Faculty of Agricultural and Environmental Sciences, Arak University, Arak, Iran
2 - Assistant Professor, Faculty of Natural Resources, Tarbiat Modares University, Tehran, Iran .* (Corresponding Author)
3 - Full Professor, Chemical Department, Tarbiat Modares University, Tehran, Iran

Received: 2018-05-26 Accepted : 2018-07-11 Published : 2020-07-22

Keywords: Adsorption, Mercury, Amine, Magnetic Nano-particle, Functionalized,

Abstract :

Background and Objective: Nowadays, pollution of aquatic ecosystems with toxic metals, especially mercury, is one of the major concerns of the world. The use of nano-adsorbents is a novel high-performance method for removing heavy metals from aqueous media. In this study, in order to remove of Hg (II) from aqueous solutions and chloro-alkali wastewater, amine functionalized-Fe3O4@SiO2-NH2 nanocomposite was synthesized. Method: As-synthesized nano-composite was characterized by thermo-gravimetric analysis, scanning electron microscopy, Fourier Transform Infrared spectroscopy, and vibrating sample magnetometry. The nano-composite was used for removal of Hg (II) ions from aqueous solution and chloro-alkali wastewater in batch system. Findings: The maximum equilibrium adsorption capacities for Hg (II) ions from aqueous solution 137.45 mg/g were calculated. Percentage of mercury removal from real wastewater was estimated about 55%. Sorption of Hg (II) ions with Fe3O4@SiO2-NH2 agreed well to the Langmuir isotherm model, confirming a monolayer adsorption. Desorption study showed that adsorbed metals could easily be desorbed from the adsorbent by 0.8 M HCl for Hg(II) ions, that the desorption percentage efficiencies was reduced from first to fifth cycle times about 15 %. Discussion and Conclusion: The results showed that the synthesized nanocomposite in this research has a relatively high adsorption capacity for Hg (II) ions adsorption, also according to its recyclability and reusability, the application of this adsorbent in wastewater treatment system could be reasonable in terms of the economic aspect. 

References:

1. Chen C, Wang X. Adsorption of Ni (II) from aqueous solution using oxidized multiwall carbon nanotubes. Ind Eng Chem Res 2006;45:9144–9.


2. Bustamante P, Carravieri A, Goutte A, Barbraud C, Delord K, Chastel O, et al. High feather mercury concentrations in the wandering albatross are related to sex, breeding status and trophic ecology with no demographic consequences. Environ Res 2016;144:1–10.


3. Yardim MF, Budinova T, Ekinci E, Petrov N, Razvigorova M, Minkova V. Removal of mercury (II) from aqueous solution by activated carbon obtained from furfural. Chemosphere 2003;52:835–41.


4. Zabihi M, Ahmadpour A, Asl AH. Removal of mercury from water by carbonaceous sorbents derived from walnut shell. J Hazard Mater 2009;167:230–6.


5. Xing HT, Chen JH, Sun X, Huang YH, Su ZB, Hu SR, et al. NH2-rich polymer/graphene oxide use as a novel adsorbent for removal of Cu (II) from aqueous solution. Chem Eng J 2015;263:280–9.


6. Xie L, Jiang R, Zhu F, Liu H, Ouyang G. Application of functionalized magnetic nanoparticles in sample preparation. Anal Bioanal Chem 2014;406:377–99.


7. Huang S-H, Chen D-H. Rapid removal of heavy metal cations and anions from aqueous solutions by an amino-functionalized magnetic nano-adsorbent. J Hazard Mater 2009;163:174–9.


8. Javani Jouni F, Zafari J, Abdolmaleki P, Vazini H, Ghandi L, Satari M. Aflatoxin M1 detoxification from infected milk using Fe3O4 nanoparticles attached to specific aptamer. J Nanostructure Chem 2017. doi:10.1007/s40097-017-0250-5.


9. Hadavifar M, Bahramifar N, Younesi H, Rastakhiz M, Li Q, Yu J, et al. Removal of mercury(II) and cadmium(II) ions from synthetic wastewater by a newly synthesized amino and thiolated multi-walled carbon nanotubes. J Taiwan Inst Chem Eng 2016;67:1–9. doi:10.1016/j.jtice.2016.08.029.


10. Hadavifar M, Bahramifar N, Younesi H, Li Q. Adsorption of mercury ions from synthetic and real wastewater aqueous solution by functionalized multi-walled carbon nanotube with both amino and thiolated groups. Chem Eng J 2014;237:217–28.


11. Ren Y, Abbood HA, He F, Peng H, Huang K. Magnetic EDTA-modified chitosan/SiO2/Fe3O4 adsorbent: preparation, characterization, and application in heavy metal adsorption. Chem Eng J 2013;226:300–11.


12. Wang J, Zheng S, Shao Y, Liu J, Xu Z, Zhu D. Amino-functionalized Fe3O4@ SiO2 core–shell magnetic nanomaterial as a novel adsorbent for aqueous heavy metals removal. J Colloid Interface Sci 2010;349:293–9.


13. Deng Y, Qi D, Deng C, Zhang X, Zhao D. Superparamagnetic high-magnetization microspheres with an Fe3O4@ SiO2 core and perpendicularly aligned mesoporous SiO2 shell for removal of microcystins. J Am Chem Soc 2008;130:28–9.


14. Men H-F, Liu H-Q, Zhang Z-L, Huang J, Zhang J, Zhai Y-Y, et al. Synthesis, properties and application research of atrazine Fe 3 O 4@ SiO 2 magnetic molecularly imprinted polymer. Environ Sci Pollut Res 2012;19:2271–80.


15. Shen X, Wang Q, Chen W, Pang Y. One-step synthesis of water-dispersible cysteine functionalized magnetic Fe3O4 nanoparticles for mercury(II) removal from aqueous solutions. Appl Surf Sci 2014;317:1028–34. doi:10.1016/j.apsusc.2014.09.033.


16. Wang L, Cole M, Li J, Zheng Y, Chen YP, Miller KP, et al. Polymer grafted recyclable magnetic nanoparticles. Polym Chem 2015;6:248–55.


17. Hadavifar M, Bahramifar N, Younesi H, Rastakhiz M, Li Q. Journal of the Taiwan Institute of Chemical Engineers Removal of mercury ( II ) and cadmium ( II ) ions from synthetic wastewater by a newly synthesized amino and thiolated multi-walled carbon nanotubes. J Taiwan Inst Chem Eng 2016;67:397–405. doi:10.1016/j.jtice.2016.08.029.


18. Einollahi Peer F, Bahramifar N, Younesi H. Removal of Cd (II), Pb (II) and Cu (II) ions from aqueous solution by polyamidoamine dendrimer grafted magnetic graphene oxide nanosheets. J Taiwan Inst Chem Eng 2018;0:1–16. doi:10.1016/j.jtice.2018.03.039.