Photocatalytic removal of 2,4,6-trichlorophenol from water exploiting commercial ZnO powder.
2,4,6-trichlorophenol is an important water pollutant owing to the severity of its toxicity. The aqueous phase photocatalytic oxidation of 2,4,6-trichlorophenol over ZnO was investigated as a potential method for the abatement of this pollutant. The effects of operating parameters such as initial Zn...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
Elsevier
2010
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/16186/1/Photocatalytic%20removal%20of%202.pdf |
| _version_ | 1825945767081148416 |
|---|---|
| author | Gaya, Umar Ibrahim Abdullah, Abdul Halim Hussein, Mohd. Zobir Zainal, Zulkarnain |
| author_facet | Gaya, Umar Ibrahim Abdullah, Abdul Halim Hussein, Mohd. Zobir Zainal, Zulkarnain |
| author_sort | Gaya, Umar Ibrahim |
| collection | UPM |
| description | 2,4,6-trichlorophenol is an important water pollutant owing to the severity of its toxicity. The aqueous phase photocatalytic oxidation of 2,4,6-trichlorophenol over ZnO was investigated as a potential method for the abatement of this pollutant. The effects of operating parameters such as initial ZnO doses and substrate concentration on the removal of 2,4,6-trichlorophenol were studied and optimised at 0.75 g L− 1 and 50 mg L− 1, respectively. The photocatalytic system afforded the highest degradation efficiency at neutral pH. The decomposition of 2,4,6-trichlorophenol by the photoprocess agreed satisfactorily with pseudo zero-order kinetic model. The effect of the presence of SO42−, S2O82−, HPO42− and Cl− on the 2,4,6-trichlorophenol removal rate was for the first time revealed. Some hitherto unreported pathway intermediates of ZnO-assisted 2,4,6-trichlorophenol degradation were recorded using gas chromatography–mass spectrometry (GC–MS) and high performance liquid chromatography (HPLC). A tentative reaction mechanism for the formation of these intermediates was proposed.
|
| first_indexed | 2024-03-06T07:36:35Z |
| format | Article |
| id | upm.eprints-16186 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T07:36:35Z |
| publishDate | 2010 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-161862015-11-26T09:01:50Z http://psasir.upm.edu.my/id/eprint/16186/ Photocatalytic removal of 2,4,6-trichlorophenol from water exploiting commercial ZnO powder. Gaya, Umar Ibrahim Abdullah, Abdul Halim Hussein, Mohd. Zobir Zainal, Zulkarnain 2,4,6-trichlorophenol is an important water pollutant owing to the severity of its toxicity. The aqueous phase photocatalytic oxidation of 2,4,6-trichlorophenol over ZnO was investigated as a potential method for the abatement of this pollutant. The effects of operating parameters such as initial ZnO doses and substrate concentration on the removal of 2,4,6-trichlorophenol were studied and optimised at 0.75 g L− 1 and 50 mg L− 1, respectively. The photocatalytic system afforded the highest degradation efficiency at neutral pH. The decomposition of 2,4,6-trichlorophenol by the photoprocess agreed satisfactorily with pseudo zero-order kinetic model. The effect of the presence of SO42−, S2O82−, HPO42− and Cl− on the 2,4,6-trichlorophenol removal rate was for the first time revealed. Some hitherto unreported pathway intermediates of ZnO-assisted 2,4,6-trichlorophenol degradation were recorded using gas chromatography–mass spectrometry (GC–MS) and high performance liquid chromatography (HPLC). A tentative reaction mechanism for the formation of these intermediates was proposed. Elsevier 2010-11-30 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/16186/1/Photocatalytic%20removal%20of%202.pdf Gaya, Umar Ibrahim and Abdullah, Abdul Halim and Hussein, Mohd. Zobir and Zainal, Zulkarnain (2010) Photocatalytic removal of 2,4,6-trichlorophenol from water exploiting commercial ZnO powder. Desalination, 263 (1-3). pp. 176-182. ISSN 0011-9164 10.1016/j.desal.2010.06.055 English |
| spellingShingle | Gaya, Umar Ibrahim Abdullah, Abdul Halim Hussein, Mohd. Zobir Zainal, Zulkarnain Photocatalytic removal of 2,4,6-trichlorophenol from water exploiting commercial ZnO powder. |
| title | Photocatalytic removal of 2,4,6-trichlorophenol from water exploiting commercial ZnO powder. |
| title_full | Photocatalytic removal of 2,4,6-trichlorophenol from water exploiting commercial ZnO powder. |
| title_fullStr | Photocatalytic removal of 2,4,6-trichlorophenol from water exploiting commercial ZnO powder. |
| title_full_unstemmed | Photocatalytic removal of 2,4,6-trichlorophenol from water exploiting commercial ZnO powder. |
| title_short | Photocatalytic removal of 2,4,6-trichlorophenol from water exploiting commercial ZnO powder. |
| title_sort | photocatalytic removal of 2 4 6 trichlorophenol from water exploiting commercial zno powder |
| url | http://psasir.upm.edu.my/id/eprint/16186/1/Photocatalytic%20removal%20of%202.pdf |
| work_keys_str_mv | AT gayaumaribrahim photocatalyticremovalof246trichlorophenolfromwaterexploitingcommercialznopowder AT abdullahabdulhalim photocatalyticremovalof246trichlorophenolfromwaterexploitingcommercialznopowder AT husseinmohdzobir photocatalyticremovalof246trichlorophenolfromwaterexploitingcommercialznopowder AT zainalzulkarnain photocatalyticremovalof246trichlorophenolfromwaterexploitingcommercialznopowder |