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Removal of Arsenic(V) from aqueous solution by quaternized rice husk

The potential of using quaternized rice husk (QRH) as a sorbent for the removal of As(V) from aqueous solution was investigated. Both batch and column studies were carried out. Results of batch studies indicate that sorption was pH and temperature dependent. Equilibrium was attained within 20 minute...

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Main Authors: Lee, C. K., Low, K. S., Liew, S. C., Choo, C. S.
Format: Article
Published: Taylor and Francis Group 1999
Online Access:http://psasir.upm.edu.my/id/eprint/112401/
https://www.tandfonline.com/doi/abs/10.1080/09593332008616892
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spelling my.upm.eprints.1124012025-02-19T07:12:49Z http://psasir.upm.edu.my/id/eprint/112401/ Removal of Arsenic(V) from aqueous solution by quaternized rice husk Lee, C. K. Low, K. S. Liew, S. C. Choo, C. S. The potential of using quaternized rice husk (QRH) as a sorbent for the removal of As(V) from aqueous solution was investigated. Both batch and column studies were carried out. Results of batch studies indicate that sorption was pH and temperature dependent. Equilibrium was attained within 20 minutes and sorption appeared to be essentially an ion exchange process. Experimental data could be fitted into the Langmuir isotherm with a maximum sorption capacity of 18.98 mg g−1 at pH 7.5 and 28±2°C. Anions such as SO42− and CrO42− interfere with the uptake of As(V) by QRH. In the column studies, results show that breakthrough depends on bed depth but not on flow rate as sorption was very rapid. In addition, service time at 50% breakthrough was inversely proportional to influent concentration and had a linear relationship with bed-depth. Taylor and Francis Group 1999 Article PeerReviewed Lee, C. K. and Low, K. S. and Liew, S. C. and Choo, C. S. (1999) Removal of Arsenic(V) from aqueous solution by quaternized rice husk. Environmental Technology, 20 (9). pp. 971-978. ISSN 0959-3330; eISSN: 1479-487X https://www.tandfonline.com/doi/abs/10.1080/09593332008616892 10.1080/09593332008616892
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description The potential of using quaternized rice husk (QRH) as a sorbent for the removal of As(V) from aqueous solution was investigated. Both batch and column studies were carried out. Results of batch studies indicate that sorption was pH and temperature dependent. Equilibrium was attained within 20 minutes and sorption appeared to be essentially an ion exchange process. Experimental data could be fitted into the Langmuir isotherm with a maximum sorption capacity of 18.98 mg g−1 at pH 7.5 and 28±2°C. Anions such as SO42− and CrO42− interfere with the uptake of As(V) by QRH. In the column studies, results show that breakthrough depends on bed depth but not on flow rate as sorption was very rapid. In addition, service time at 50% breakthrough was inversely proportional to influent concentration and had a linear relationship with bed-depth.
format Article
author Lee, C. K.
Low, K. S.
Liew, S. C.
Choo, C. S.
spellingShingle Lee, C. K.
Low, K. S.
Liew, S. C.
Choo, C. S.
Removal of Arsenic(V) from aqueous solution by quaternized rice husk
author_facet Lee, C. K.
Low, K. S.
Liew, S. C.
Choo, C. S.
author_sort Lee, C. K.
title Removal of Arsenic(V) from aqueous solution by quaternized rice husk
title_short Removal of Arsenic(V) from aqueous solution by quaternized rice husk
title_full Removal of Arsenic(V) from aqueous solution by quaternized rice husk
title_fullStr Removal of Arsenic(V) from aqueous solution by quaternized rice husk
title_full_unstemmed Removal of Arsenic(V) from aqueous solution by quaternized rice husk
title_sort removal of arsenic(v) from aqueous solution by quaternized rice husk
publisher Taylor and Francis Group
publishDate 1999
url http://psasir.upm.edu.my/id/eprint/112401/
https://www.tandfonline.com/doi/abs/10.1080/09593332008616892
_version_ 1825162374854737920
score 13.244413

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