Removal of Cu(II) from Water by a Novel Graphene Oxide/Hexadecyltrimethylammonium Composite Sponge and Its Regeneration for Reuse
作者： Baohua Song , Donglei Zou , Yongsheng Zhao , Yue Kuang , Zhenhua Sun
DOI: 10.1007/S11270-020-04665-0
关键词: Desorption 、 Adsorption 、 Chemistry 、 Graphene 、 Oxide 、 Water treatment 、 Filtration 、 Reagent 、 Chemical engineering 、 Specific surface area
摘要: Graphene oxide has great potential for use as an adsorbent due to the high specific surface area, negative charges, and abundant oxygen-containing functional groups. However, difficulty of graphene separate from water renders it impractical real treatment. In present study, a novel oxide/hexadecyltrimethylammonium composite sponge (GO/HDTMA) was prepared investigated filtration material removal Cu(II) water. The formed porous GO/HDTMA highly stable in adsorption spontaneous exothermic, increasing with decreasing temperatures. showed good ability remove competing cations (K+, Na+, Ca2+, Mg2+) present. Five cycles adsorption-desorption-regeneration studies that, after adsorption, could be successfully regenerated repeated by using 1-M HCl solution desorption reagent. At sufficiently dose, excellent performance river containing different coexisting solutes. Finally, our 30-day column study revealed that is filtering conclusion, flow-through treatment applications removal.
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