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pubmed-article:19402411pubmed:abstractTextThe pure-form zeolites (A and X) were synthesized by applying a two-stage method during hydrothermal treatment of fly ash prepared initial Cu and Zn gel. The difference of adsorption capacity of both synthesized zeolites was assessed using Cu and Zn as target heavy metal ions. It was found that adsorption capacity of zeolite A showed much higher value than that of zeolite X. Thus, attention was focused on investigating the removal performance of heavy metal ions in aqueous solution on zeolite A, comparing with zeolite HS (hydroxyl-solidate) prepared from the residual fly ash (after synthesis of pure-form zeolite A from fly ash) and a commercial grade zeolite A. Batch method was used to study the influential parameters of the adsorption process. The equilibrium data were well fitted by the Langmuir model. The removal mechanism of metal ions followed adsorption and ion exchange processes. Attempts were also made to recover heavy metal ions and regenerate adsorbents.lld:pubmed
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pubmed-article:19402411pubmed:authorpubmed-author:KimR ARAlld:pubmed
pubmed-article:19402411pubmed:authorpubmed-author:WangLianjunLlld:pubmed
pubmed-article:19402411pubmed:authorpubmed-author:JianshengLiLlld:pubmed
pubmed-article:19402411pubmed:authorpubmed-author:SunXiuyunXlld:pubmed
pubmed-article:19402411pubmed:authorpubmed-author:WangChunfengClld:pubmed
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pubmed-article:19402411pubmed:volume21lld:pubmed
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pubmed-article:19402411pubmed:pagination127-36lld:pubmed
pubmed-article:19402411pubmed:dateRevised2011-11-17lld:pubmed
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pubmed-article:19402411pubmed:year2009lld:pubmed
pubmed-article:19402411pubmed:articleTitleEvaluation of zeolites synthesized from fly ash as potential adsorbents for wastewater containing heavy metals.lld:pubmed
pubmed-article:19402411pubmed:affiliationSchool of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. chun-feng@hotmail.comlld:pubmed
pubmed-article:19402411pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:19402411pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed