The chemically activated carbon prepared from Syzygium
jambolanum nut [CHSJC], an agricultural
waste, after activation with ammonium persulphate, an
oxidizing chemical in the presence of
sulphuric acid followed by thermal activation by
modified dolomite process was successfully used to
remove mercury(II) and chromium(VI) from wastewater in
batch studies by adsorption process.
Surface morphology of the carbon was analyzed by
scanning electron microscope (SEM) before and
after the adsorption of Hg(II) and Cr(VI) and the
results revealed the presence of micropores which
are responsible for adsorption. Fourier transform
infrared (FT-IR) spectroscopic studies of the carbon
showed that physio-sorption took place on the surface
of the carbon and the functional groups
responsible for adsorption. SEM and FT-IR analysis of
high temperature activated Syzygium
jambolanum nut carbon [HSJC] and a commercial
activated carbon (CAC) before and after the
adsorption of Hg(II) and Cr(VI) were also carried out
for comparison purposes. Based on the
experimental analysis of carbon prepared from Syzygium
jambolanum nut before and after adsorption
of Hg(II) and Cr(VI) with SEM studies, it was found out
that micropores were responsible for
adsorption. More inorganic deposits present in the
pores of CHSJC than HSJC and CAC showed that
CHSJC was superior to HSJC and CAC for the removal of
mercury(II) and chromium(VI) from
wastewater which was also in line with the results from
batch studies. From FT-IR spectral analysis, it
could be concluded that there was exclusive
physio-sorption of Hg(II) and Cr(VI) on CHSJC, HSJC
and CAC.
Author
(s) Details
Dr. S. Sophie Beulah
Government College of Engineering, Tirunelveli – 627 007,
Tamilnadu, India.
Dr. K. Muthukumaran
Hindusthan College of Engineering & Technology, Coimbatore –
641 032, Tamilnadu, India.
View Book :- https://bp.bookpi.org/index.php/bpi/catalog/book/253
No comments:
Post a Comment