Photocatalytic Oxidation of Arsenic by Tartrate-Citrate and Citrate and Removal from Groundwater
Solar photocatalytic oxidation and removal of arsenic from groundwater with tartrate-citrate vis-à-vis citrate as photocatalyst was examined. In kinetic tests (5 mg/L Fe(II) and 50 μM catalyst in a 250 μg/L As(III)-spiked groundwater; solar intensity 0.3-0.7 kW/m2) with tartrate-citrate as photocata...
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| Format: | Conference or Workshop Item |
| Language: | English |
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2008
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| Online Access: | http://scholars.utp.edu.my/id/eprint/2184/ http://scholars.utp.edu.my/id/eprint/2184/1/Photocatalytic_Oxidation_of_Arsenic_by_Tartrate-Citrate_and_Citrate_and_Removal_from_Groundwater_-_Mala.pdf |
| _version_ | 1848659210952245248 |
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| author | Chaudhuri, M. Majumder, A. |
| author_facet | Chaudhuri, M. Majumder, A. |
| author_sort | Chaudhuri, M. |
| building | UTP Institutional Repository |
| collection | Online Access |
| description | Solar photocatalytic oxidation and removal of arsenic from groundwater with tartrate-citrate vis-à-vis citrate as photocatalyst was examined. In kinetic tests (5 mg/L Fe(II) and 50 μM catalyst in a 250 μg/L As(III)-spiked groundwater; solar intensity 0.3-0.7 kW/m2) with tartrate-citrate as photocatalyst, 84-87% As(III) oxidation and 89-95% arsenic removal were achieved in 6 h (in suspension: As(V) 210-218 μg/L and As(III) 17-31 μg/L; in filtrate: As(V) 4-8 μg/L and As(III) 8-20 μg/L). With citrate as photocatalyst, similar oxidation kinetics was observed, but the As(III) oxidation and arsenic removal efficiency were somewhat lower – 74-78% and 83-88% (in suspension: As(V) 185-195 μg/L and As(III) 30-52 μg/L; in filtrate: As(V) 10-14 μg/L and As(III) 20-28 μg/L). Extract of tamarind (equivalent to 50 μM tartrate-citrate) as photocatalyst achieved 83-90% arsenic removal from an arsenic-spiked groundwater (As(III) 250 μg/L; Fe(II) 5 mg/L) and 84-86% arsenic removals from an arsenic-bearing groundwater (As(III) 235 μg/L; As(V) 25 μg/L; Fe(II) 4.48 mg/L). Similar arsenic removal (82-84%) was achieved when the method was performed in a 1-L closed PET bottle with the arsenic-bearing water. The method and can be applied at the household level to treat small quantities of drinking water. |
| first_indexed | 2025-11-13T07:26:49Z |
| format | Conference or Workshop Item |
| id | oai:scholars.utp.edu.my:2184 |
| institution | Universiti Teknologi Petronas |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-13T07:26:49Z |
| publishDate | 2008 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:scholars.utp.edu.my:21842017-01-19T08:26:26Z http://scholars.utp.edu.my/id/eprint/2184/ Photocatalytic Oxidation of Arsenic by Tartrate-Citrate and Citrate and Removal from Groundwater Chaudhuri, M. Majumder, A. TD Environmental technology. Sanitary engineering Solar photocatalytic oxidation and removal of arsenic from groundwater with tartrate-citrate vis-à-vis citrate as photocatalyst was examined. In kinetic tests (5 mg/L Fe(II) and 50 μM catalyst in a 250 μg/L As(III)-spiked groundwater; solar intensity 0.3-0.7 kW/m2) with tartrate-citrate as photocatalyst, 84-87% As(III) oxidation and 89-95% arsenic removal were achieved in 6 h (in suspension: As(V) 210-218 μg/L and As(III) 17-31 μg/L; in filtrate: As(V) 4-8 μg/L and As(III) 8-20 μg/L). With citrate as photocatalyst, similar oxidation kinetics was observed, but the As(III) oxidation and arsenic removal efficiency were somewhat lower – 74-78% and 83-88% (in suspension: As(V) 185-195 μg/L and As(III) 30-52 μg/L; in filtrate: As(V) 10-14 μg/L and As(III) 20-28 μg/L). Extract of tamarind (equivalent to 50 μM tartrate-citrate) as photocatalyst achieved 83-90% arsenic removal from an arsenic-spiked groundwater (As(III) 250 μg/L; Fe(II) 5 mg/L) and 84-86% arsenic removals from an arsenic-bearing groundwater (As(III) 235 μg/L; As(V) 25 μg/L; Fe(II) 4.48 mg/L). Similar arsenic removal (82-84%) was achieved when the method was performed in a 1-L closed PET bottle with the arsenic-bearing water. The method and can be applied at the household level to treat small quantities of drinking water. 2008 Conference or Workshop Item PeerReviewed application/pdf en http://scholars.utp.edu.my/id/eprint/2184/1/Photocatalytic_Oxidation_of_Arsenic_by_Tartrate-Citrate_and_Citrate_and_Removal_from_Groundwater_-_Mala.pdf Chaudhuri, M. and Majumder, A. (2008) Photocatalytic Oxidation of Arsenic by Tartrate-Citrate and Citrate and Removal from Groundwater. In: Asia Water 2008 International Conference on Water and Wastewater, 1-2 April, 2008, Kuala Lumpur. |
| spellingShingle | TD Environmental technology. Sanitary engineering Chaudhuri, M. Majumder, A. Photocatalytic Oxidation of Arsenic by Tartrate-Citrate and Citrate and Removal from Groundwater |
| title | Photocatalytic Oxidation of Arsenic by Tartrate-Citrate and Citrate and Removal from Groundwater |
| title_full | Photocatalytic Oxidation of Arsenic by Tartrate-Citrate and Citrate and Removal from Groundwater |
| title_fullStr | Photocatalytic Oxidation of Arsenic by Tartrate-Citrate and Citrate and Removal from Groundwater |
| title_full_unstemmed | Photocatalytic Oxidation of Arsenic by Tartrate-Citrate and Citrate and Removal from Groundwater |
| title_short | Photocatalytic Oxidation of Arsenic by Tartrate-Citrate and Citrate and Removal from Groundwater |
| title_sort | photocatalytic oxidation of arsenic by tartrate-citrate and citrate and removal from groundwater |
| topic | TD Environmental technology. Sanitary engineering |
| url | http://scholars.utp.edu.my/id/eprint/2184/ http://scholars.utp.edu.my/id/eprint/2184/1/Photocatalytic_Oxidation_of_Arsenic_by_Tartrate-Citrate_and_Citrate_and_Removal_from_Groundwater_-_Mala.pdf |