ADSORPTION BEHAVIOR OF ORTHOPHOSPHATE ONTO ACTIVATED CARBON LOADED WITH MOLYBDENUM(VI) OR IRON(III)
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概要
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The study on the adsorption behavior of orthophosphate onto activated carbon loaded with molybdenum(VI) (Mo(VI)-AC) or iron(III) (Fe(III)-AC) was carried out by a column method. Orthophosphate adsorbed increases with increasing the amount of molybdenum(VI) loaded onto activated carbon. The optimum pH for the adsorption of orthophosphate onto Mo(VI)-AC was 2.0. As much as 7.7 × 10^<-4> mol of orthophosphate was adsorbed onto 5.0 g of activated carbon loaded with 1.1 g of molybdenum(VI) at pH 2.0. The molar ratio of orthophosphate adsorbed onto Mo(VI)-AC to molybdenum(VI) adsorbed onto activated carbon was found to be 1 : 12. Orthophosphate may be adsorbed in the form of phosphomolybdenic acid (H_<3-n>PO_4M_<12>OO_<36>^<n->) onto Mo(VI)-AC. Orthophosphate adsorbed onto Fe(III)-AC decreases on both sides of the optimum pH 6.0. As much as 3.0 × 10 mol orthophosphate was adsorbed onto 5.0 g of activated carbon with 23.5 mg of Fe(III). The amount of orthophosphate adsorbed increases with increasing Fe(III) loaded onto activated carbon; the molar ratio of orthophosphate adsorbed to Fe(III) adsorbed was less than unity in the pH range over 2.5 to 10.4. Orthophosphate may be adsorbed onto Fe(III)-AC by the coordination of orthophosphate to Fe(III).
- 社団法人日本分析化学会の論文
- 1982-11-05
著者
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Ohashi Kousaburo
Department Of Chemistry Ibaraki University
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Ohashi Kousaburo
Department Of Achemistry Faculty Of Science Ibaraki University
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YAMAMOTO KATSUMI
Department of Anesthesiology, University of Occupational and Environmental Health, School of Medicin
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SAITO Tsugio
Department of Chemistry, Faculty of Science, Ibaraki University
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SAI Atsuko
Department of Chemistry, Faculty of Science, Ibaraki University
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MOTOJIMA Kenji
Energy Research Lab., Hitachi Ltd.
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Sai Atsuko
Department Of Chemistry Ibaraki University
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Saito Tsugio
Department Of Chemistry Faculty Of Science Ibaraki University
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Motojima Kenji
Energy Research Lab. Hitachi Ltd.
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Yamamoto Katsumi
Department Of Chemistry Ibaraki University
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Yamamoto Katsumi
Department Of Anesthesiology University Of Occupational And Environmental Health School Of Medicine
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