以 F127/PAA 水凝胶去除有机废水中的重金属离子。
Synthesis of F127/PAA hydrogels for removal of heavy metal ions from organic wastewater.
机构信息
Key Laboratory of Biomass Chemical Engineering, Zhejiang University, Hangzhou, PR China; College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China.
College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China.
出版信息
Colloids Surf B Biointerfaces. 2018 Jul 1;167:176-182. doi: 10.1016/j.colsurfb.2018.04.024. Epub 2018 Apr 6.
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 Cu and Hg 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 Cu and Hg at 283.4 and 222.1 mg/g, respectively. For the BSA containing water, the removal ratio of Cu and Hg 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 Cu and Hg. Our results suggested the potential application of the F127/PAA hydrogels in treatment of real organic wastewater.
废水中的有机物会极大地降低吸附剂去除重金属离子的能力，从而极大地限制了它们在实际体系中的应用。在这里，我们制备了 F127/PAA 水凝胶，由于其抗有机物污染的特性，可有效去除废水中的 Cu 和 Hg。F127/PAA 水凝胶具有高溶胀比和机械应力，对 Cu 和 Hg 的最大吸附容量分别为 283.4 和 222.1mg/g。对于含有 BSA 的水，F127/PAA 水凝胶对 Cu 和 Hg 的去除率分别可达 94.0%和 70.2%。对于含有腐殖酸的水，相应的数据分别为 89.5%和 72.1%。此外，在腐殖酸溶液和模拟化妆品废水中进行五次循环吸附-解吸后，F127/PAA 水凝胶对 Cu 和 Hg 的去除效率仅略有下降。我们的结果表明，F127/PAA 水凝胶在处理实际有机废水方面具有潜在的应用前景。
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