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Page 55
Volume 4
December 10-12, 2018
Rome, Italy
Nano Research & Applications
ISSN: 2471-9838
Advanced Materials 2018
Nano Engineering 2018
JOINT EVENT
22
nd
International Conference on
Advanced Materials
and Simulation
&
22
nd
Edition of International Conference on
Nano Engineering &
Technology
T
he consumption and accumulation of high concentration of
methylmercury (MeHg
+
) through food pyramid leading to fatal
public health problems could adversely affect central nervous
system of fetus and its development of alteration. The gradual
increase of MeHg
+
concentration in the natural and engineered
environments attracts an attention and requests cost-effective
and sustainable remedial technologies for the effective removal
of MeHg
+
, which is the most recent trend in environmental
technology Markets. Zero-valent iron (ZVI) technology has been
widely known for its effective treatment of diverse contaminants
due to its high reactivity; moreover, ZVI has a metallic iron core
that shows reducing (electron-donating) power and an iron oxide
shell having an adsorptive capacity for metal ions on its surface.
In this study, nanoscale zero-valent iron (nZVI) was synthesized
via reduction of ferric ion with sodium borohydride; pumice-nZVI
(P-nZVI) particleswere produced by coating pumice granuleswith
nZVI, and impregnation method was applied for the synthesis of
indium-ZVI (In-ZVI) catalyst. The size and shape of the particles,
distribution of nZVI and indium on P-nZVI and ZVI were analysed
by a scanning electron microscope, respectively. This research
has investigated the reactivity of nano-iron particles for the
reduction of methylmercury in their suspension systems by
conducting batch kinetic experiments. P-nZVI and nZVI particles
showed much faster reaction kinetics for the reduction of MeHg
+
to Hg(0) than In-ZVI particles. The iron particles have been tested
for adsorption properties. A series of control tests helped to
determine the reaction mechanism. The experimental results
suggest that zero-valent iron technology is a promising candidate
for remediation of soil and groundwater contaminated with
methylmercury in aqueous and subsurface environments.
Biography
Dr. Woojin Lee is working as a professor in civil and environmental engineer-
ing department of Nazarbayev University. He received a Ph.D. from Civil En-
gineering at Texas A&M University, College Station and postdoctoral fellow-
ship training in Chemistry at Indiana University, Bloomington. He has been
teaching and researching in the field of environmental science and engineer-
ing including environmental catalysts, carbon sequestration and conversion,
fate of emerging chemical contaminants, and, integrated water treatment
technologies at KAIST and POSTECH since 2005.
ahmed.andalouci@lspm.cnrs.frOlga Lem
1
, Madina Abseit
1
, Mannix Balanay
1
, Moulay-Rachid Babaa
1
, Seunghee
Han
2
and
Woojin Lee
1
1
Nazarbayev University, Astana, Kazakhstan
2
GIST, Korea
Olga Lem et al., Nano Res Appl 2018, Volume 4
DOI: 10.21767/2471-9838-C7-028
Enhanced reduction of methylmercury by zero-
valent iron particles