Abstract
Organic matters in wastewater dramatically impaired the removal capability of adsorbents to heavy metal ions, thus greatly limited their applications for real systems. Here we fabricated the F127/PAA hydrogels that could effectively remove Cu2+ and Hg2+ from organic wastewater due to their anti-fouling properties against organic matters. The F127/PAA hydrogels performed high swelling ratio and mechanical stress, showing maximum adsorption capacities of Cu2+ and Hg2+ at 283.4 and 222.1 mg/g, respectively. For the BSA containing water, the removal ratio of Cu2+ and Hg2+ by F127/PAA hydrogels could reach to 94.0% and 70.2%, respectively. For the humic acid containing water, the corresponding data were 89.5% and 72.1%. Besides, five cyclic adsorption-desorptions in humic acid solution and simulated cosmetic wastewater only slightly decreased the removal efficiencies of F127/PAA hydrogels to Cu2+ and Hg2+. Our results suggested the potential application of the F127/PAA hydrogels in treatment of real organic wastewater.
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