Metal soprtion enhancement of rice hull through chemical modification
Various chemical modifications were attempted on rice hull in order to improve its metal sorption capacity. Ethylenediamine tetraacetic acid (EDTA) was found to give the greatest enhancement. Parameters investigated include pH, initial concentration, sorbent dosage and competition with other cations...
| Main Authors: | , , , |
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| Format: | Article |
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Taylor and Francis Group
2000
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| Online Access: | http://psasir.upm.edu.my/id/eprint/112964/ |
| _version_ | 1848866090132701184 |
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| author | Low, K. S. Lee, C. K. Wong, S. Y. Tang, P. L. |
| author_facet | Low, K. S. Lee, C. K. Wong, S. Y. Tang, P. L. |
| author_sort | Low, K. S. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Various chemical modifications were attempted on rice hull in order to improve its metal sorption capacity. Ethylenediamine tetraacetic acid (EDTA) was found to give the greatest enhancement. Parameters investigated include pH, initial concentration, sorbent dosage and competition with other cations and chelators. Sorption was pH dependent with greater uptake at higher pH value. Equilibrium was attained in less than 60 minutes implying the material could be suitable for continuous flow system. Maximum sorption capacities of EDTA-modified rice hull were 8.86, 9.59, 8.76 and 28.65 mg g−1 for Cu(II), Cr(III), Ni(II) and Pb(II) respectively. The presence of EDTA and nitrilotriacetic acid (NTA) suppressed the metal binding capacity of EDTA-RH. Column study on the removal of Cu(II) from wood preservative waste showed that the removal of Cu(II) was a function of bed-depth. |
| first_indexed | 2025-11-15T14:15:04Z |
| format | Article |
| id | upm-112964 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T14:15:04Z |
| publishDate | 2000 |
| publisher | Taylor and Francis Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1129642025-01-13T02:46:24Z http://psasir.upm.edu.my/id/eprint/112964/ Metal soprtion enhancement of rice hull through chemical modification Low, K. S. Lee, C. K. Wong, S. Y. Tang, P. L. Various chemical modifications were attempted on rice hull in order to improve its metal sorption capacity. Ethylenediamine tetraacetic acid (EDTA) was found to give the greatest enhancement. Parameters investigated include pH, initial concentration, sorbent dosage and competition with other cations and chelators. Sorption was pH dependent with greater uptake at higher pH value. Equilibrium was attained in less than 60 minutes implying the material could be suitable for continuous flow system. Maximum sorption capacities of EDTA-modified rice hull were 8.86, 9.59, 8.76 and 28.65 mg g−1 for Cu(II), Cr(III), Ni(II) and Pb(II) respectively. The presence of EDTA and nitrilotriacetic acid (NTA) suppressed the metal binding capacity of EDTA-RH. Column study on the removal of Cu(II) from wood preservative waste showed that the removal of Cu(II) was a function of bed-depth. Taylor and Francis Group 2000 Article PeerReviewed Low, K. S. and Lee, C. K. and Wong, S. Y. and Tang, P. L. (2000) Metal soprtion enhancement of rice hull through chemical modification. Environmental Technology, 21 (11). pp. 1239-1244. ISSN 0959-3330; eISSN: 1479-487X https://www.tandfonline.com/doi/abs/10.1080/09593332108618152 10.1080/09593332108618152 |
| spellingShingle | Low, K. S. Lee, C. K. Wong, S. Y. Tang, P. L. Metal soprtion enhancement of rice hull through chemical modification |
| title | Metal soprtion enhancement of rice hull through chemical modification |
| title_full | Metal soprtion enhancement of rice hull through chemical modification |
| title_fullStr | Metal soprtion enhancement of rice hull through chemical modification |
| title_full_unstemmed | Metal soprtion enhancement of rice hull through chemical modification |
| title_short | Metal soprtion enhancement of rice hull through chemical modification |
| title_sort | metal soprtion enhancement of rice hull through chemical modification |
| url | http://psasir.upm.edu.my/id/eprint/112964/ http://psasir.upm.edu.my/id/eprint/112964/ http://psasir.upm.edu.my/id/eprint/112964/ |