| Research Title |
ADSORPTION OF ARSENIC IN AQUEOUS SOLUTION USING GRAPHITE IMMOBILIZED WITH IRON OXIDE NANOPARTICLES |
| Date of Distribution |
2 December 2014 |
| Conference |
| Title of the Conference |
The 40th Congress on Science and Technology of Thailand (STT40) |
| Organiser |
The Science Society of Thailand under the Patronage of His Majesty the King and Faculty of Science Khon Kaen University |
| Conference Place |
Hotel Pullman Khon Kaen Raja Orchid |
| Province/State |
Khon Kaen, Thailand |
| Conference Date |
2 December 2014 |
| To |
4 December 2014 |
| Proceeding Paper |
| Volume |
- |
| Issue |
- |
| Page |
289 |
| Editors/edition/publisher |
The Science Society of Thailand under the Patronage of His Majesty the King and Faculty of Science Khon Kaen University |
| Abstract |
This research was aimed to study the adsorption capacity of arsenic in aqueous solution using two types of graphite adsorbent including graphite activated by hydrochloric acid and graphite immobilized with iron oxide nanoparticles (GFeO-NP). The GFeO-NP was prepared via the precipitating of FeO in base solution at which using the prepared Fe-EDTA complex that characterized by ultra-violet and visible spectrophotometry. Then, the immobili-zation of FeO-NP onto the activated graphite substrate was carried out and characterized by an energy dispersive X-rays spectroscopy. Application for arsenic adsorption by batch method was also investigated in association with flow injection-hydride generation atomic absorption spectrometry. From the experiments, the yield of the Fe-EDTA complex of 82.28% was obtained. The Fe-EDTA complex solution showed its spectrum with maximum wavelength at 257 nm in an acidic pH range. When comparing the adsorption capacity of arsenite and arsenate using both adsorbents, it was found that the activated graphite gave its adsorption capacity at equilibrium of 106.72 and 35.61 mg/g, respectively. While the GFeO-NP showed much higher adsorption capacities of both arsenic species (227.45 and 99.88 mg/g, respectively) than its bare substrate. Therefore, the FeO-NP immobilized on the activated graphite can drastically improve their adsorption capacity of the arsenic species compared with the activated graphite alone. |
| Author |
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| Peer Review Status |
มีผู้ประเมินอิสระ |
| Level of Conference |
ชาติ |
| Type of Proceeding |
Abstract |
| Type of Presentation |
Poster |
| Part of thesis |
true |
| Presentation awarding |
false |
| Attach file |
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| Citation |
0
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Publication
Journal Publication
ไทย