Supplementary material
Direct Synthesis of Sodalite from Indonesian Kaolin for Adsorption of Pb
2+Solution, Kinetic, and Isotherm Approach
Tri Wahyuni
1, Didik Prasetyoko
1*, Suprapto
1, Imroatul Qoniah
1, Hasliza Bahruji
2, Ahmad Dawam
1, Sugeng Triwahyono
3, Aishah Abdul Jalil
31
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Sepuluh Nopember, Keputih, Sukolilo, Surabaya 60111, Indonesia
2
Cardiff Catalysis Institute, Cardiff University, CF10 3AT Cardiff, United Kingdom
3
Ibnu Sina Institute for Fundamental Science Studies, Universiti Teknologi Malaysia, Skudai, Johor Bahru 81310, Malaysia
Email: [email protected]; [email protected]
1
Tabel 1. Effects of H
2O composition and Si/Al ratio ratio towards crystallinity and particle size
Parameters Water composition Si/Al ratio
30 60 90 128 200 1.5 2 2.5 3 3.5
Crystallinity, % 22.4 28.8 27.7 22.2 22.3 9.8 22.2 7.6 7.7 3.7 Particle size,
nm
36 35.9 39 35.5 38.1 40.8 35.5 38 35.8 33.
8
2
Figure 1. (A) XRD Patterns, (B) FT-IR Spectra for sodalite H2O molar ratio of : (a) 30, (b) 60, (c) 90, (d) 128, (e) 200
3
A)
1400 1200 1000 800 600 400
Transmittance (a.u)
(d) (e)
(c)
(b)
(a)
B)
Wavenumber (cm-1)2θ (°)
10 20 30 40 50
Intensity (a.u) (c)
(d) (e)
(b)
(a)
Figure 2. (A) XRD Pattern, (B) FT-IR Spectra for sodalite with SiO2/Al2O3 molar ratio variations of (a) 1.5 (b) 2 (c) 2.5 (d) 3 (e) 3.5
4 A)
10 20 30 40 50
(a) (b) (c) (d) (e)
2θ (°)
Intensity (a.u)
1400 1200 1000 800 600 400
B)
(a) (b) (c) (d) (e)
Wavenumber (cm-1)
Transmittance (a.u)
Figure 3. The morphology of synthesis results based on SEM characterization on the SiO2/Al2O3 molar ratio variations of (a) 1,5 (b) 2 (c) 3,5 (d) standard sodalite
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a b
c d
Figure 4. (A) XRD Pattern, (B) FT-IR Spectra to predict synthesis products based on stirring time variations of (a) 1, (b) 3, (c) 6, (d) 12, (e) 24 hours
6
1400 1200 1000 800 600 400
B)
(a) (b) (c) (d) (e)
Transmittance (a.u)
Wavenumber (cm-1) 2θ (°)
Intensity (a.u)
(a) (b) (c) (d) (e)
10 20 30 40 50
Figure 5. (A) XRD Pattern and (B) FT-IR Spectra based on effects of aging time (a) 24, (b) 48, (c) 72 hours.
7 B)
(a) (b) (c)
Wavenumber (cm-1)
Transmittant (a.u)
1400101200 201000 80030 60040400 50
A)
(a) (b) (c)
2θ (°)
Intensity (a.u)
Figure 6. Graphs showing the Pb2+ kinetic adsorption by sodalite with different samples; S-24, S-48 (crystallization time of 24 and 48 hours) and S-standard (standard sodalite)
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ln (qe-qt)
t (minutes) t (minutes)
ln (qe-qt)
(b) Pseudo-second-order model
(a) Pseudo-first-order model
Figure 7. Langmuir’s isotherm adsorption model of Pb2+ on sodalite, (a) S-24, (b) S- 48, (c) S-standard.
9 qt (mg/g)
Ce/qt (g/L)
qt (mg/g)
Ce/qt (g/L)
qt (mg/g)
Ce/qt (g/L)
(b) (a)
(c)
.
Figure 8.Freundlich isotherm adsorption model of Pb2+ on sodalite (a) S-24, (b) S-48, (c) S- standard
10
logqt
logCe
logqt
logCe logCe
logqt
(b) (a)
logqt
