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Removal of Hexacyanoferrate(II) Using Zn-Al-OAc Hydrotalcite as an Anion Exchanger
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نویسنده
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Roto Roto ,Nindiyasari Fitriana ,Tahir Iqmal
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منبع
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journal of physical science - 2009 - دوره : 20 - شماره : 2 - صفحه:73 -84
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چکیده
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Cyanide is a highly toxic anion and ingestion exposure can be fatal. cyanide can be removed from water systems using zn-al-oac hydrotalcite (oac-=acetate) as an ion exchanger. a synthesis of zn-al-oac hydrotalcite has been performed and it was used as an anion exchanger to reduce the concentration of cyanide in the form of [fe(cn)6]4-. zn-al-oac hydrotalcite was prepared using a stoichiometric method followed by hydrothermal treatment. the chemical composition of zn-al-oac hydrotalcite was found to be zn0.73al0.27(oh)2(oac)0.27.0.95h2o. the anion exchange reaction of oac- by [fe(cn)6]4- was fit to yield a second order reaction rate constant of k = 0.215 m-1s-1 with r2=0.996. the anion exchange capacity (aec) was found to be 219 meq [fe(cn)6]4-/100g hydrotalcite. it was found that zn-al-fe(cn)6 hydrotalcite could not be regenerated by oac-
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کلیدواژه
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hydrotalcite ,acetate ,anion exchange capacity ,hexacyanoferrate(II) ,regeneration
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آدرس
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Gadjah Mada University, Faculty of Mathematics and Natural Sciences, Department of Chemistry, Indonesia, Gadjah Mada University, Faculty of Mathematics and Natural Sciences, Department of Chemistry, Indonesia, Gadjah Mada University, Faculty of Mathematics and Natural Sciences, Department of Chemistry, Indonesia
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پست الکترونیکی
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roto05@ugm.ac.id
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Authors
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