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...
Saved in:
Main Authors: | , |
---|---|
Format: | Conference or Workshop Item |
Published: |
2008
|
Subjects: | |
Online Access: | http://eprints.utp.edu.my/2184/1/Photocatalytic_Oxidation_of_Arsenic_by_Tartrate-Citrate_and_Citrate_and_Removal_from_Groundwater_-_Mala.pdf http://eprints.utp.edu.my/2184/ |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Universiti Teknologi Petronas |
id |
my.utp.eprints.2184 |
---|---|
record_format |
eprints |
spelling |
my.utp.eprints.21842017-01-19T08:26:26Z 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 http://eprints.utp.edu.my/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. http://eprints.utp.edu.my/2184/ |
institution |
Universiti Teknologi Petronas |
building |
UTP Resource Centre |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Teknologi Petronas |
content_source |
UTP Institutional Repository |
url_provider |
http://eprints.utp.edu.my/ |
topic |
TD Environmental technology. Sanitary engineering |
spellingShingle |
TD Environmental technology. Sanitary engineering Chaudhuri, M. Majumder, A. Photocatalytic Oxidation of Arsenic by Tartrate-Citrate and Citrate and Removal from Groundwater |
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. |
format |
Conference or Workshop Item |
author |
Chaudhuri, M. Majumder, A. |
author_facet |
Chaudhuri, M. Majumder, A. |
author_sort |
Chaudhuri, M. |
title |
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_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_sort |
photocatalytic oxidation of arsenic by tartrate-citrate and citrate and removal from groundwater |
publishDate |
2008 |
url |
http://eprints.utp.edu.my/2184/1/Photocatalytic_Oxidation_of_Arsenic_by_Tartrate-Citrate_and_Citrate_and_Removal_from_Groundwater_-_Mala.pdf http://eprints.utp.edu.my/2184/ |
_version_ |
1738655173963677696 |