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...
| Main Authors: | , , , |
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| Format: | Article |
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Taylor and Francis Group
1999
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| Online Access: | http://psasir.upm.edu.my/id/eprint/112401/ |
| _version_ | 1848865933360103424 |
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| author | Lee, C. K. Low, K. S. Liew, S. C. Choo, C. S. |
| author_facet | Lee, C. K. Low, K. S. Liew, S. C. Choo, C. S. |
| author_sort | Lee, C. K. |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T14:12:35Z |
| format | Article |
| id | upm-112401 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T14:12:35Z |
| publishDate | 1999 |
| publisher | Taylor and Francis Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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 |
| spellingShingle | Lee, C. K. Low, K. S. Liew, S. C. Choo, C. S. Removal of Arsenic(V) from aqueous solution by quaternized rice husk |
| title | 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_short | Removal of Arsenic(V) from aqueous solution by quaternized rice husk |
| title_sort | removal of arsenic(v) from aqueous solution by quaternized rice husk |
| url | http://psasir.upm.edu.my/id/eprint/112401/ http://psasir.upm.edu.my/id/eprint/112401/ http://psasir.upm.edu.my/id/eprint/112401/ |