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Publication
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| Title of Article |
Methylene Blue Removal From Aqueous Solution by Manganese Octahedral
Molecular Sieve (K-OMS2) Coated on Activated Alumina Ball
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| Date of Acceptance |
28 April 2020 |
| Journal |
| Title of Journal |
KKU Research Journal (Graduate Studies) |
| Standard |
TCI |
| Institute of Journal |
Graduate School, Khon Kaen University. |
| ISBN/ISSN |
E-ISSN 2672-9636 |
| Volume |
21 |
| Issue |
1 |
| Month |
January to March |
| Year of Publication |
2021 |
| Page |
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| Abstract |
Manganese octahedral molecular sieve (K-OMS2) coated on activated alumina ball (Al2O3) can improve the surface with polyvinyl alcohol (PVA) binder for removal of methylene blue (MB). K-OMS2 powder was synthesized by the hydrothermal method followed by coating onto the activated alumina ball (K-OMS2/Al2O3-PVA). The K-OMS2 / Al2O3-PVA was characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Point of zero charges (pHpzc), and Nitrogen adsorption-desorption. The results showed that K-OMS2 had a cryptomelane crystalline structure with fracturing of the K-OMS2 particle on K-OMS2/Al2O3-PVA and pHpzc ≈ 8. The specific surface area was 212.65 m2/g, 0.45 cm3/g of the pore volume, while pore size was 4.19 nm. The kinetics study of MB removal showed the reaction rate increased as temperature increased in the range of the temperature investigated (303 – 333 K), which expressed the pseudo-second-order kinetic model. For the thermodynamic study, the reaction involves spontaneous reactions (-ΔG°), in an endothermic nature (+ΔH°), and with increased randomness (+ΔS°). |
| Keyword |
K-OMS2, Methylene blue, PVA |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
ชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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