Catalytic wet air oxidation of linear alkylbenzene sulphonate
In view of slow rates of wet oxidation process, the catalytic oxidation of organic containing wastewaters over various homogenous and heterogenous catalysts has received a lot of attention. The impact of heterogenous catalysts on the Wet Air Oxidation (WAO) of Linear Alkylbenzene Sulphonate (LAS) ha...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Faculty of Chemical and Natural Resources Engineering, UTM
2007
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| Online Access: | http://eprints.utm.my/4587/ http://eprints.utm.my/4587/1/MohdAriffinAbu2007_CatalyticWetAirOxidation.pdf |
| _version_ | 1848890839913201664 |
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| author | Abu Hassan, Mohd. Ariffin Metcalfe, Ian S. |
| author_facet | Abu Hassan, Mohd. Ariffin Metcalfe, Ian S. |
| author_sort | Abu Hassan, Mohd. Ariffin |
| building | UTeM Institutional Repository |
| collection | Online Access |
| description | In view of slow rates of wet oxidation process, the catalytic oxidation of organic containing wastewaters over various homogenous and heterogenous catalysts has received a lot of attention. The impact of heterogenous catalysts on the Wet Air Oxidation (WAO) of Linear Alkylbenzene Sulphonate (LAS) has been determined. Experiments were carried out at temperatures from 180C to 220C for 120 minutes, and an oxygen partial pressure of 1.5MPa was maintained for all the experiments. The catalyst was introduced to the original solution of LAS and all of the catalysts were used in a powder form. WAO of LAS in the presence of heterogenous catalysts increased the TOC and COD removals. CuO.ZnO/Al2O3 was found to be the effective catalyst for the degradation of LAS and this catalyst were capable of oxidising VFAs which were resistant to further oxidation during uncatalysed WAO. Desulphonation did occur in the presence of Pt/Al2O3 and CuO.ZnO/Al2O3. Leaching of both copper and zinc occured during the CuO.ZnO/Al2O3 catalysed WAO. It was found that within the range of experimental conditions studied, the homogenous activity of leached metals is insignificant and therefore, the role of heterogenous activity of CuO.ZnO/Al2O3 is still dominant. |
| first_indexed | 2025-11-15T20:48:27Z |
| format | Article |
| id | utm-4587 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T20:48:27Z |
| publishDate | 2007 |
| publisher | Faculty of Chemical and Natural Resources Engineering, UTM |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | utm-45872014-01-13T06:29:06Z http://eprints.utm.my/4587/ Catalytic wet air oxidation of linear alkylbenzene sulphonate Abu Hassan, Mohd. Ariffin Metcalfe, Ian S. T Technology (General) In view of slow rates of wet oxidation process, the catalytic oxidation of organic containing wastewaters over various homogenous and heterogenous catalysts has received a lot of attention. The impact of heterogenous catalysts on the Wet Air Oxidation (WAO) of Linear Alkylbenzene Sulphonate (LAS) has been determined. Experiments were carried out at temperatures from 180C to 220C for 120 minutes, and an oxygen partial pressure of 1.5MPa was maintained for all the experiments. The catalyst was introduced to the original solution of LAS and all of the catalysts were used in a powder form. WAO of LAS in the presence of heterogenous catalysts increased the TOC and COD removals. CuO.ZnO/Al2O3 was found to be the effective catalyst for the degradation of LAS and this catalyst were capable of oxidising VFAs which were resistant to further oxidation during uncatalysed WAO. Desulphonation did occur in the presence of Pt/Al2O3 and CuO.ZnO/Al2O3. Leaching of both copper and zinc occured during the CuO.ZnO/Al2O3 catalysed WAO. It was found that within the range of experimental conditions studied, the homogenous activity of leached metals is insignificant and therefore, the role of heterogenous activity of CuO.ZnO/Al2O3 is still dominant. Faculty of Chemical and Natural Resources Engineering, UTM 2007-03 Article PeerReviewed application/pdf en http://eprints.utm.my/4587/1/MohdAriffinAbu2007_CatalyticWetAirOxidation.pdf Abu Hassan, Mohd. Ariffin and Metcalfe, Ian S. (2007) Catalytic wet air oxidation of linear alkylbenzene sulphonate. Journal of Chemical and Natural Resources Engineering, 1 . pp. 1-14. ISSN 1823-5255 |
| spellingShingle | T Technology (General) Abu Hassan, Mohd. Ariffin Metcalfe, Ian S. Catalytic wet air oxidation of linear alkylbenzene sulphonate |
| title | Catalytic wet air oxidation of linear alkylbenzene sulphonate |
| title_full | Catalytic wet air oxidation of linear alkylbenzene sulphonate |
| title_fullStr | Catalytic wet air oxidation of linear alkylbenzene sulphonate |
| title_full_unstemmed | Catalytic wet air oxidation of linear alkylbenzene sulphonate |
| title_short | Catalytic wet air oxidation of linear alkylbenzene sulphonate |
| title_sort | catalytic wet air oxidation of linear alkylbenzene sulphonate |
| topic | T Technology (General) |
| url | http://eprints.utm.my/4587/ http://eprints.utm.my/4587/1/MohdAriffinAbu2007_CatalyticWetAirOxidation.pdf |