羧甲基纤维素
吸附
亚甲蓝
三聚氰胺
朗缪尔吸附模型
海绵
化学
复合数
废水
化学工程
纤维素
核化学
材料科学
有机化学
复合材料
催化作用
废物管理
光催化
钠
工程类
生物
植物
作者
Yang Zeng,Xiangtao Tang,Yan Qin,Adila Maimaiti,Xudong Zhou,Yujie Guo,Xin Liu,Wenqing Zhang,Jie Gao,Lingfan Zhang
标识
DOI:10.1016/j.ijbiomac.2023.125280
摘要
Industrial dye wastewater poses a threat to human health due to its harmful effects, and the treatment of related wastewater is receiving increasing attention. In this paper, the melamine sponge with high porosity and convenient separation was selected as matrix material, and alginate/carboxymethyl cellulose-melamine sponge composite (SA/CMC-MeS) was prepared through crosslinking strategy. Not only does the composite cleverly combined the merits of alginate and carboxymethyl cellulose, it also enhanced the adsorption performance for methylene blue (MB). The adsorption data manifested that the adsorption process of SA/CMC-MeS agreed with the Langmuir model and pseudo-second-order kinetic model, and theoretical maximum adsorption capacity was 230 mg/g (pH 8). The characterization results demonstrated that the adsorption mechanism was attributed to the electrostatic attraction between the carboxyl anions on the composite and the dye cations in solution. Importantly, SA/CMC-MeS could selectively separate MB from binary dye system and had positive anti-interference ability in the face of coexisting cations. After 5 times of cycles, the adsorption efficiency remained above 75 %. Based on these outstanding practical properties, this material has a potential to solve dye contamination.
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