CD Tesis

Sodalit Berbasis Lempung Alam Maredan Sebagai Penyangga Katalis FexOy Untuk Mendegradasi Zat Warna Metilen Biru

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Zeolite is a hydrated porous alumina silicate mineral with a threedimensional
framework structure that has many benefits. Zeolite can be
synthesized with basic materials that contain a lot of silica and alumina, one of
which is Maredan clay from Riau. Maredan clay has been synthesized into zeolite
sodalite, but its crystallinity is still low < 50%. In this study, sodalite will be
impregnated with ferric nitrate salt as Fen
+ precursor and used as a support for
the FexOy catalyst to degrade methylene blue dye through the Fenton process.
Sodalite was synthesized by reflux method using Maredan natural clay
which had been activated with NaOH . The catalyst was synthesized using the
impregnation method by mixing a solution of Fe (NO3)3.9H2O with sodalite at
calcination temperatures of 300; 400 and 500 oC, then coded FexOy/sodalite300;
FexOy/sodalite400 and FexOy/sodalite500. Solution The catalyst characterization
was carried out using X-Ray Diffraction (XRD), Scanning Electron Microscopy -
Energy Dispersive X-Ray Spectroscopy (SEM-EDX), Fourier Transform Infra Red
(FTIR) and pH zero point charge (pHzpc).
The characterization results showed that the catalyst phase consisted of
sodalite, muscovite, hematite and non-clay minerals in the form of quartz with
increased in crystalinity but decreased crystal size on the FexOy/sodalite400
catalyst. Based on SEM analysis, it is known that the morphology of the catalyst is
in the form of irregular chunks, due to the impregnation of Fe ion. This is
supported by EDX analysis which states an increase in the value of Fe content
and the value of Si / Al ratio. FTIR analysis showed Fe vibrations at wave
numbers 3640-3660 cm-1 and 796.64 cm-1 in the form of Al-Fe-OH vibrations and
at wave numbers 450.40 cm-1 the Fe-O vibrations. In addition, the standard
vibrations for zeolite were also found at wave numbers 464.86 cm-1 (bonding
vibration T-O), 560.35 cm-1 (double ring), 660.65 cm-1 (symmetrical strain OT-
O) and 963.74 cm-1 (O-T-O strain asymmetry), so it is known that the catalyst
synthesis has been successful. This is also supported by the results of the GSA
analysis which shows the success of impregnation of Fe ions on the catalyst by
increasing the surface area of sodalite from 13.228 m2/g to 75.862 m2/g on the
catalyst FexOy/sodalite400. The pHzpc value showed that the surface charge of
solids is equal to zero, which is at pH 3. Methylene blue was degraded after
reacting with H2O2 as an oxidant with the help of a FexOy/sodalite catalyst. A
total of 98.8% methylene blue was degraded for 10 minutes under the help of a
FexOy/sodalit400 catalyst at pH 3 with an initial concentration of methylene blue
of 50 ppm, a catalyst dose of 0.5 g/L and a concentration H2O2 of 0.67 M.
Keywords : Sodalite, impregnation, Fenton method, degradation and methylene
blue.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

10 05. 222 (0001)

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Kimia., 2022

Deskripsi Fisik

xiii, 129 hlm.: ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

10 05. 222 (0001)

Tipe Isi

-

Tipe Media

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Tipe Pembawa

-

Edisi

-

Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

FATAH

Versi lain/terkait

Lampiran Berkas

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