EFFECTS OF CHEMICAL FERTILIZERS ON THE CR(VI) ADSORPTION ON PADDY SOIL

Effects of six chemical fertilizers, Ca(NO(3))(2), NH(4)Cl, NH(4)NO(3), CO(NH(2))(2), KH(2)PO(4), and KCl, on the adsorption isotherm of Cr(VI) on paddy soil were Studied using batch equilibrium experiments. The results showed that the adsorption of Cr(VI) on paddy soil was inhibited to some extent by the additions of the six fertilizers. Because of their different effects on Cr(VI) adsorption, fertilizers should be reasonably used during cultivation in order to avoid the Cr mobilization and decrease its bioavailability.