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pubmed-article:16081131pubmed:issue6lld:pubmed
pubmed-article:16081131pubmed:dateCreated2006-2-3lld:pubmed
pubmed-article:16081131pubmed:abstractTextThis study describes an investigation using tropical water lilies (Nymphaea spontanea) to remove hexavalent chromium from aqueous solutions and electroplating waste. The results show that water lilies are capable of accumulating substantial amount of Cr(VI), up to 2.119 mg g(-1) from a 10 mg l(-1) solution. The roots of the plant accumulated the highest amount of Cr(VI) followed by leaves and petioles, indicating that roots play an important role in the bioremediation process. The maturity of the plant exerts a great effect on the removal and accumulation of Cr(VI). Plants of 9 weeks old accumulated the most Cr(VI) followed by those of 6 and 3 weeks old. The results also show that removal of Cr(VI) by water lilies is more efficient when the metal is present singly than in the presence of Cu(II) or in waste solution. This may be largely associated with more pronounced phytotoxicity effect on the biochemical changes in the plants and saturation of binding sites. Significant toxicity effect on the plant was evident as shown in the reduction of chlorophyll, protein and sugar contents in plants exposed to Cr(VI) in this investigation.lld:pubmed
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pubmed-article:16081131pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:16081131pubmed:year2006lld:pubmed
pubmed-article:16081131pubmed:articleTitleAccumulation of chromium (VI) from aqueous solutions using water lilies (Nymphaea spontanea).lld:pubmed
pubmed-article:16081131pubmed:affiliationDivision of Chemistry and Biology, School of Arts and Science, Tunku Abdul Rahman College, 53920 Setapak, Kuala Lumpur, Malaysia.lld:pubmed
pubmed-article:16081131pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:16081131pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed