Dependence of zeta potential and soil hydraulic conductivity on adsorbed cation and aqueous phase properties

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dc.contributor.authorAydin, M
dc.contributor.authorYano, T
dc.contributor.authorKilic, S
dc.date.accessioned2024-09-18T21:06:48Z
dc.date.available2024-09-18T21:06:48Z
dc.date.issued2004
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractThis paper deals with the effects of pH, electrolyte concentration, and exchangeable Na percentage (ESP) on electrophoretic mobility (EM)/zeta potential (zetap) of clay particles and hydraulic conductivity (HC) of the clay/sand mixtures. The soils taken from Japan and Kazakhstan were used for obtaining clay fractions. For EM determinations, clay suspensions were prepared at a concentration of 4 g of clay per 100 mL of distilled water (DW) or electrolyte solution. The electrophoretic mobilities were measured using Burton apparatus with water-cooling system and converted into p. For HC measurements, clay/sand mixtures were designated 16:84. Columns of these mixtures were prepared by packing 120 g of mixtures into 50-mm diameter plastic cylinders to a bulk density of about 1.4 g cm(-3). Results showed clearly that the mobility was very sensitive to the ion valence adsorbed on the clay. The negative electrophoretic mobilities of homoionic Na-Ariake soil (AS) clay and Na-Kzyl-Orda soil (KS) clay were 2.13 X 10(-8) and 2.14 X 10(-8) m(2) s(-1) V-1, respectively, whereas Ca clays flocculated. The p values of AS clay and KS clay, as a function of the ESP, varied between -12.83 and -26.84 mV, and -5.68 and -27.00 mV, respectively, at ESP > 30. Although the smectitic AS clay was less sensitive than the micaceous KS clay to pH changes during electrophoresis experiment, its HC also was affected by pH changes. Decreased pH from 7 to 5 could easily result in two to three times high HC values for both clay/sand mixtures. The EM of both soil clays was similar at pH 10 to 12, and exchangeable Na percentages 90 to 100. Sharp increases in EM and decreases in HC of AS clay were observed at exchangeable Na percentages 50 and 60, respectively. Similar trends related to EM were also obtained for the KS clay. However, salt concentration of the suspension solution did not have consistent effect on the EM values. This behavior of the clays was consistent with HC observation. The results indicated that HC of the clay/sand mixtures could he correlated to p. The saturated HC of the mixtures was found to change as an exponential function of the zetap of clay particles.en_US
dc.identifier.endpage459en_US
dc.identifier.issn0361-5995
dc.identifier.issn1435-0661
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-1542291035en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage450en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12483/13824
dc.identifier.volume68en_US
dc.identifier.wosWOS:000220040700013en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSoil Sci Soc Ameren_US
dc.relation.ispartofSoil Science Society of America Journalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectElectrophoretic Mobilityen_US
dc.subjectElectrolyte Concentrationen_US
dc.subjectOrganic-Matteren_US
dc.subjectParticle-Sizeen_US
dc.subjectFlocculation Concentrationen_US
dc.subjectClay Dispersionen_US
dc.subjectDouble-Layersen_US
dc.subjectPhen_US
dc.subjectSuspensionsen_US
dc.subjectMontmorilloniteen_US
dc.titleDependence of zeta potential and soil hydraulic conductivity on adsorbed cation and aqueous phase propertiesen_US
dc.typeArticleen_US

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