Synthesis of F127/PAA hydrogels for removal of heavy metal ions from organic wastewater

Publication date: 1 July 2018
Source:Colloids and Surfaces B: Biointerfaces, Volume 167
Author(s): Qin Meng, Bin Peng, Chong Shen
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.

Graphical abstract

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