Effect of the Anion on the Sorption of Potassium by Some Humic and Hydrol Humic Latosols

“…The cation exchange in acidic Kaolinite-iron oxide systems is complicated by the adsorption of anion as well as cations (Ayres and Hagihara 1953;Thomas 1960a). The exchange equation for the reaction of cation with such a system then becomes:…”

Section: Group Cmentioning

confidence: 99%

Significance of saturation index of certain clay minerals in shallow coastal groundwater, in and around Kalpakkam, Tamil Nadu, India

et al. 2011

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The saturation index of clay minerals like Gibbsite, Kaolinite, Illite, Montmorillonite and Chlorite in groundwater were studied in detail by collecting 29 groundwater samples from the shallow coastal aquifers in and around Kalpakkam. The samples collected were analysed for major cations, anions and trace elements by using standard procedures. The study reveals that pH has a significant role in the saturation index (SI) of minerals. It also shows that the relationship of electrical conductivity to the SI of these minerals is not significant than that of the ionic strength, log pCO 2 values, and alumina silica ratio have significant relation to the SI of these clay minerals. The SI of these clay minerals was spatially distributed to identify the areas of higher SI. Silica has good correlation to SI of Kaolinite, Gibbsite and Montmorillonite and Al has good correlation to SI of all the minerals except to that of Chlorite.

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“…Volcanic ash soils usually absorb considerable amounts of SO/', probably because of the presence of allophane and other hydrous oxides (Ayres and Hagihara, 1953;Fox et al, 1971;Gebhardt and Coleman, 1974b;Walmsley, 1973,1974b). However, Hogg and Toxopeus (1966) and Fox (1974) showed that younger allophane soils retain little SO/' against leaching.…”

Section: Effect Of Hydrous A1 and Fe Oxides And Clav Mineralsmentioning

confidence: 99%