Preparasi dan Karakterisasi TiO2-Zeolit Serta Pengujiannya pada Degradasi Limbah Industri Tekstil secara Fotokatalitik
ABSTRACT: The preparation of
titanium oxide-zeolite composite (TiO2-zeolite) has been done. Preparation was
initiated by dispersing oligocation of titanium solution into suspension of natural
zeolite. The suspension was stirred and then filtered to separate the solid
phase from the filtrate. The solid phase was heated by microwave oven to
convert the oligocations into its oxide forms and the resulting material
(called as TiO2-zeolite) then was used to photodegrade the wastewater of
PT.Jogjatex The TiO2-zeolite and unmodified zeolite were characterized using
X-ray diffractometry, FT-IR spectro-photometry, X-ray fluorescence (XRF) and
gas sorption analysis (GSA) methods to determine their physicochemical
properties. Photocatalytic activity of TiO2-Zeolite was tested by exposing the
suspension of TiO2-Zeolite/wastewater by the UV light of 366 nm at room
temperature for 15 - 75 minutes. Characterization results exhibited that the
formation of TiO2 on internal as well as external surfaces of Zeolite could not
be detected with X-ray diffractometry as
well as FT-IR spectrophotometry, however
elemental analysis result with XRF indicated that titanium concentration in
zeolite increased due to the inclusion, i.e from 0.26% (w/w) in zeolite to
2.80% (w/w) in TiO2-zeolite. Characterization result by GSA exhibited the
increased of specific surface area from 19.57 m2/g in zeolite to 67.96 m2/g in
TiO2-zeolite; total pore volume from 20.64 x 10-3 mL/g in zeolite to 49.561 x
10-3 mL/g in TiO2-Zeolite; pore radius average decreased from 21.10 Å in
zeolite to 14.58 Å in TiO2-zeolite. Photocatalytic activity test of
TiO2-zeolite on wastewater of PT. Jogjatex showed that UV radiation for 75
minutes on the mixture of TiO2-zeolite and wastewater resulted in the decreased
of COD number up to 57.85%. Meanwhile
the sorption study showed that zeolite and TiO2-zeolite could decrease COD
number of wastewater up to 43.95% and 57.85%, respectively.
Penulis: Yeslia Utubira, Karna
Wijaya, Triyono, Eko Sugiharto
Kode Jurnal: jpkimiadd060070
