CD Tesis

Impregnasi Sodalit Dengan Fe (III) Untuk Penyediaan Katalis Pendegradasi Zat Warna Metilen Biru: Efek Waktu Aging

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Zeolite is a versatile material, it can be applied in industrial and
environmental fields, either as an adsorbent, catalyst or catalyst support, ion
exchange or as a membrane filler. Zeolite sodalite (SOD) which has been
converted from Maredan natural clay raw material still has low crystallinity and
has not been applied for specific purposes. This study aimed to obtain a zeolite
sodalite with better crystallinity through the reflux synthesis process by studying
the effects of aging time. In order to be used as a catalyst, zeolite was
impregnated with Fe(III) to provide an active site that plays a role in dye
degradation. Methylene blue (MB) was chosen because this molecule is classified
as dangerous, difficult to degrade and is often found in water due to industrial
waste disposal.
This study used Maredan clay as raw material, which was activated with
3 M H2SO4 and calcined at a temperature of 750 oC for 3 hours. The activated
solid was converted into zeolite using 5 M NaOH reagent with varied aging times
(3, 5 and 7 hours) while stirring at 80 oC. The mixture was refluxed at 100 oC for
8 hours, and filtered. The zeolite solid obtained was washed until the washing
water was neutral and then dried. The next step was impregnation of Fe through
Fe (NO3)3∙9H2O to solid zeolite, then calcined for 4 hours at a temperature of
300 oC, to obtain a catalyst Fe/SOD-3; Fe/SOD-5 and Fe/SOD-7. The catalysts
obtained were characterized using X-ray Diffraction (XRD), Scanning Electron
Microscopy (SEM), Energy Dispersive X-ray (EDX) and Fourier Transform
Infrared Spectroscopy (FTIR) methods. The characterization results showed that
the catalyst contained minerals sodalite, LTA, muscovite and quartz with an
irregular spherical morphology and lumps with a rough surface. Based on the
diffractogram, the purity of impregnated sodalite increased from 36.45% with a
crystal size of 32.36 nm for the Fe/SOD-3 catalyst to 42.47% and 42.48% with a
crystal size of 61.56 and 38.14 nm on the catalyst Fe/SOD-5 and Fe/SOD-7. The
results of impregnation of sodalite with Fe showed the addition of Fe to the
Fe/SOD catalyst compared to sodalite. Fe content were 22.99%, respectively;
22.82% and 27, 46% in Fe/SOD-3 each; Fe/SOD-5 and Fe/SOD-7.
Interpretationoccurs at wave numbers 510-480 cm-1 and 575-540 cm-1 indicating
the bending vibration of Si-O or Al-O and external vibrations from the double
ring and the interaction of Fe-O seen in the absorption wave 675 cm-1. All
catalysts applied to the degradation of methylene blue (MB) dye through the
Fenton reaction with variations in the degradation time, the concentration of
H2O2 and MB, and the dose of the catalyst. The results of degradation showed
that Fe/SOD-7 was the best catalyst to degrade MB (99,87%) than other
catalysts, under catalytic conditions (concentration of 6.7 mM H2O2, 50 ppm MB
and dose of catalyst to reactants was 0.25 gL-1).
Keywords : Aging, Fenton, impregnation, catalyst and refluk

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

10 05. 220 (0020)

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Kimia., 2020

Deskripsi Fisik

xi, 83 hlm,; ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

10 05. 220 (0020)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

FATAH

Versi lain/terkait

Lampiran Berkas

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