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Atef S. Darwish,Mohamed A. Mekewi,Tarek M. Madkour,Youmna M. Hashish 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.30 No.-
This work focused on designing three-categorized polymeric forms; carboxylic-enriched, amideenrichedand equi-rationed amide-carboxylic hydrogels. Such hydrogels were analyzed using swelling,Monte-Carlo simulations, TGA, zeta-potential measurements, SEM and AFM. Their adsorption behaviorswere examined using methylene blue dye. Effect of pH, adsorption isotherms, kinetics, temperature andadsorbent reproducibility were deliberated. All adsorption processes described by Dubinin–Radushkevichmodel following pseudo-second order kinetics. Carboxylic-enriched hydrogel showed negativelychargedsmooth surfaces with unusual ulcer-like holes, which played the chief role in dyeing removalfrom wastewater with superior reproducibility. Increasing amide ratios in hydrogels encouragedelectrostatic and chemical interactions with dye molecules and deteriorated adsorbent reproducibility.