Adsorpcija herbicida u neorganskom i organski izmenjenom montmorionitu / Adsorption herbicide in inorganic and organic montmorillonite modified
2013
Tomić, Zorica P. (Poljoprivredni fakultet, Beograd-Zemun (Srbija)) | Dugalić, Goran (Agronomski fakultet, Čačak (Srbija)) | Gajić, Boško (Poljoprivredni fakultet, Beograd-Zemun (Srbija)) | Kaluđerović, Lazar (Poljoprivredni fakultet, Beograd-Zemun (Srbija)) | Đurović, Rada (Institut za pesticide i zaštitu životne sredine, Beograd (Srbija). Laboratorija za hemiju)
The paper presents the results of sorption of herbicide, acetochlor, with different concentrations on unmodified and modified montmorillonite samples. Adsorption of acetochlor caused the spread of montmorillonites layers causing increase of the d (001) basal spacing and appearance of three significant adsorption FTIR bands at 2926, 2855 and 1472 cm E-1. The Freundlich parameters for inorganic montmorillonite (Kf = 8.754 and n = 0.555) and organic-montmorillonite (Kf = 34.002 and n = 1.080) indicate that the sorption of acetochlor by organic-montmorillonite is much more expressed. Modification of montmorillonite with hexadecyltrimethylammonium ion (HDTMA+) has shown better acetochlor adsorbent properties of organo-montmorillonite compared to inorganic montmorillonite. Therefore, organic montmorillonite can serve as a good choice to remove herbicides and other pollutants from soil and water.
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