Adsorption of Basic Ca Ions by the Soil Layer in Landfill Sites
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Accession number;03A0753026
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| Title;Adsorption of Basic Ca Ions by the Soil Layer in Landfill Sites |
| Author;
ONO YUSAKU
(Center for Environmental Sci. in Saitama, JPN)
TANAKA NOBUTOSHI
(Hokkaido Univ., Graduate School of Engineering, JPN)
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Journal Title;Journal of the Japan Society of Waste Management Experts
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Journal Code:L1596A
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ISSN:
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VOL.14;NO.5;PAGE.268-277(2003)
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| Figure&Table&Reference;FIG.10, TBL.2, REF.20 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;This paper explains the following items on the titled adsorption: 1) Background; large amount Ca ions contained in landfill leachate from incineration ash affects its treatment facility performance, 2) result of passing test of a Ca(OH)2 solution through soil column; humic volcanic ash soil (I) has the highest adsorption with not less than 300 meq/100g of soil at breakthrough point (C/C0=0.05), 3) estimated neutralization reaction; H+ is dissociated from soil substance including clay-OH and humin-COOH at high alkali conditions, and exchanged with Ca ions, along with neutralized with Ca(OH)2, 4) result of passing test of an elution liquid of incineration ash (II) from waste water sludge; Ca ions was continued to pass through until breakthrough point (C/C0=0.4). It is because of lower OH ion, 0.6 equivalent amount to Ca ion and thus another 0.4 equivalent amount of Ca ions is leaked out as neutral salts such as CaCl2, and 5) conclusion; cover soil with about 0.5 m depth is needed for Ca ion adsorption by I for 3 m disposal depth of II. |
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