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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...

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Main Authors: Low, K. S., Lee, C. K., Wong, S. Y., Tang, P. L.
Format: Article
Published: Taylor and Francis Group 2000
Online Access:http://psasir.upm.edu.my/id/eprint/112964/
https://www.tandfonline.com/doi/abs/10.1080/09593332108618152
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spelling my.upm.eprints.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
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 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.
format Article
author Low, K. S.
Lee, C. K.
Wong, S. Y.
Tang, P. L.
spellingShingle Low, K. S.
Lee, C. K.
Wong, S. Y.
Tang, P. L.
Metal soprtion enhancement of rice hull through chemical modification
author_facet Low, K. S.
Lee, C. K.
Wong, S. Y.
Tang, P. L.
author_sort Low, K. S.
title Metal soprtion enhancement of rice hull through chemical modification
title_short 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_sort metal soprtion enhancement of rice hull through chemical modification
publisher Taylor and Francis Group
publishDate 2000
url http://psasir.upm.edu.my/id/eprint/112964/
https://www.tandfonline.com/doi/abs/10.1080/09593332108618152
_version_ 1821107998498488320
score 13.23648

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