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Journal of Industrial and Environmental Chemistry
|
Volume 2
GREEN CHEMISTRY &
TECHNOLOGY
7
th
International Conference on
J u n e 1 8 - 2 0 , 2 0 1 8 | D u b l i n , I r e l a n d
Zhoucheng Wang, J Ind Environ Chem 2018, Volume 2 | DOI: 10.4066/2591-7331-C1-002
SYNTHESIS AND ADSORPTION
BEHAVIOR OF CHITOSAN-COATED
MNFE2O4 NANOPARTICLES FOR
TRACE HEAVY METAL IONS REMOVAL
Zhoucheng Wang
Xiamen University, China
H
eavy metal ions such as Cr (VI), Cu (II), Zn (II) and Cd (II) are known to
be toxic and hard to be biodegraded. With the rapid development of
industry, large amounts of wastewater containing heavy metal ions, which
destroy the environment and harm human health, are produced by metal-
plating facilities, tanneries, power generation facilities, paper industries,
mining operations and fertilizer industries. Therefore, the removal of
such toxic metal ions from wastewater is a crucial issue. Adsorption is
now recognized as an effective and economic method to remove heavy
metal ions from wastewater. The adsorption process offers flexibility in
design and operation and in many cases will produce high-quality treated
effluents. In addition, since the adsorption is sometimes reversible,
adsorbentscanberegeneratedbysuitabledesorptionprocess.Inthiswork,
chitosan-coated MnFe2O4 nanoparticles (CCMNPs) were synthesized by
an eco-friendly method. The as-synthesized products were characterized
by X-ray powder diffraction (XRD), transmission electron microscopy
(TEM), Fourier transform infrared (FTIR) and superconducting quantum
interference device (SQUID). The results showed that NaOH played a
key role in the preparation of CCMNPs. The as-prepared CCMNPs with
a saturation magnetization of 16.5 emu/g were used as a magnetic
nanoadsorbent to remove toxic Cu(II) and Cr(VI) from aqueous solution.
Factors influencing the adsorption of heavy metal ions, such as pH value,
agitation time and initial metal concentration were investigated. The
maximum adsorption capacities of Cu(II) and Cr(VI) on CCMNPs were
22.6 and 15.4 mg/g, respectively. The competitive adsorption of Cu(II)
and Cr(VI) from binary solution by CCMNPs was also studied, and the
results showed that the affinity between Cu(II) and CCMNPs was much
higher than that between Cr(VI) and CCMNPs.
Zhoucheng Wang has completed his PhD from
Xiamen University in 1997. He is the professor
of the College of Chemistry and Chemical En-
gineering at Xiamen University since 2006. His
research interests concern synthesis and char-
acterization of nano-composite materials and
multilayer coatings, materials electrochemis-
try and surface engineering. He has published
more than 120 papers in reputed journals.
zcwang@xmu.edu.cnBIOGRAPHY