| Title of Article |
Oxidation–adsorption of arsenite contaminated water over ceria nanorods |
| Date of Acceptance |
15 May 2020 |
| Journal |
| Title of Journal |
DESALINATION AND WATER TREATMENT |
| Standard |
ISI |
| Institute of Journal |
DESALINATION AND WATER TREATMENT |
| ISBN/ISSN |
|
| Volume |
2020 |
| Issue |
|
| Month |
|
| Year of Publication |
2020 |
| Page |
252-261 |
| Abstract |
The dominant arsenic oxidation state in groundwater as As(III) is more difficult to remove than
As(V). To achieve higher As(III) removal, ceria (CeO2) nanorods characterized by Brunauer–Emmett–
Teller, X-ray diffraction, scanning electron microscopy, Fourier transform infrared, and X-ray
absorption spectroscopy were successfully used to combine oxidation and adsorption processes.
Results showed that when calcination temperature increased surface area decreased, whereas crystallite
size increased. Batch experiments indicated that the arsenic removal process was accurately
described by a pseudo-second-order kinetic model with maximum removal capacities of 21.27 mg/g.
X-ray absorption near-edge structure (XANES) of the solid-phase confirmed that CeO2 adsorbed
As(III) with partial As(III) oxidization to As(V) on the surface. Further evidence of the mechanisms
for As(III) removal was demonstrated by the hydroxyl group in the sorption and As(III) forming
inner-sphere monodentate and bidentate complexes on the interface of the CeO2 solid phase.
As(III) oxidization to As(V) during the sorption process suggested that CeO2 had high potential to
remove As(III) from contaminated water. |
| Keyword |
Adsorption; Arsenic complexes; Arsenite; Ceria; Cerium oxide; Oxidation |
| Author |
|
| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
|
| Citation |
0
|
|
|
Publication
Journal Publication
ไทย