Evangelou, V.P. and Lumbanraja, Jamalam (2002) Ammonium–Potassium–Calcium Exchange on Vermiculite and Hydroxy-aluminum Vermiculite. Soil Science Society American Journal, 66. pp. 445-455. ISSN 0361-5995

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Binary and ternary cation-exchange reactions involving NH+4, K+, and Ca2+ on vermiculite and hydroxy-Al interlayered vermiculite (HIV) were investigated. In the case of vermiculite, NH+4 was nearly indistinguishable from the nonpreference isotherm while HIV exhibited preference for NH +4suppressing impact on the apparent NH. The presence of K+-Ca2+ exchange had significant selectivity in NH change in HIV most likely because of retardation of Ca- the interlayer. For vermiculite, the presence of K system induced apparent high affinity sites for NH+4-Ca2+ ex-diffusion in the NH+4-Ca most likely because of interlayer collapse. The overall study demonstrated that cation-exchange selectivity coefficients in vermiculite and HIV are dependent on number and type of cations present

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User: Prof.Dr.Ir Jamalam Lumbanraja
Date Deposited: 27 Oct 2016 02:34
Last Modified: 27 Oct 2016 02:34
URI: http://repository.lppm.unila.ac.id/id/eprint/958

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