Hymexazol is the most often utilised bactericide in agriculture when it comes to production. To achieve efficient remediation of hymexazol pollution, cotton (C) and acrylic (A) discarded clothes were carbonized to prepare carbonized fibers (Cf). Dodecyl dimethyl betaine (DB) and chitosan (CH) were used to modify Cf, then alginate was secondly modified on the DB, and CH modified Cf to prepare multi-modified Cf. The adsorption isotherms of hymexazol were fitted by the Henry and the Freundlich models, and the correlation demonstrates that hymexazol’s adsorption follows both theories. The distribution coefficient and capacity parameter of hymexazol on different modified CCfs are higher than those on the ACfs. The adsorption effect of modified CCfs was better than that of modified ACFs. The optimum adsorption conditions were 30°C, pH 3, and ionic strength of 0.1 mol L−1, and the adsorption process was a spontaneous, endothermic, and entropy-increasing reaction. Chemisorption mainly controlled the adsorption rate of hymexazol, and pH and mean pore size of modified Cf were the key factors in determining the adsorption capacity and affinity, respectively.
Fatima et al. (Wed,) studied this question.