Zearalenone Removal in Synthetic Media and Aqueous Part of Canned Corn by Montmorillonite K10 and Pillared MontmorJIIonite K10

摘要

The capacities of montmorillonite K10 (K10), aluminum pillared K10 (A1-K10), and iron pillared K10 (Fe-KlO) to eliminate zearalenone (ZEN) from synthetic media and the aqueous part of canned corn were studied. Original clay and pillared clays were characterized in terms of X-ray powder diffraction analysis and N_2 adsorption-desorption isotherms. The maximum amounts of adsorption of ZEN by K10, A1-K10, and Fe-KlO at 25℃ and pH 7 were 0.202, 1.305, and 1.028 mg/g and 0.264, 0.096, and 0.255 mg/g, calculated from Langmuir and Freundlich isotherms, respectively. The adsorption of ZEN was also studied as a function of adsorbent amount (1 to 30 mg), ZEN concentration (2 to 20 mg/liter), pH of solution (pH 4 to 10), and contact time. Pillared clays could be an excellent alternative for removing ZEN in contaminated food samples and are potentially low-cost adsorbents with a promising future as an alternative to more costly materials.