吸附
醇溶蛋白
静电纺丝
化学
膜
纳米纤维
朗缪尔吸附模型
色谱法
化学工程
核化学
傅里叶变换红外光谱
动力学
材料科学
有机化学
聚合物
生物化学
物理
工程类
基因
贮藏蛋白
量子力学
作者
Kai Huang,Xili Lv,Xiao Guan,Jing Liu,Sen Li,Hongdong Song
标识
DOI:10.1016/j.indcrop.2020.112543
摘要
Hordein, as the by-product in beer brewing, was evaluated to produce nanofiber for Cd (II) removal through the electrospinning technology. This method provided the advantages of low cost, convenience, and sustainability. Incorporation of N, N'-methylenebisacrylamide (MBA) improved the Cd (II) adsorption capacity. SEM results showed that the diameter of the hordein/MBA electrospun nanofiber (HMENF) decreased with the addition of MBA, and the bead-free nanofiber was obtained within the content of 30 % MBA (w/w). ATR-FTIR and XRD analysis confirmed that crosslinking between MBA and hordein occurred. Results showed that the HMENF membrane had optimal adsorption at pH 5–6, 160 mg/L initial Cd (II) concentration, and 10 h contact time. Fundamental adsorption properties were evaluated with the adsorption kinetics and adsorption isotherm. The adsorption data fitted well with the pseudo-second-order (PSO) model and the Langmuir isotherm model. The maximum adsorption capacity was calculated to be 48.78 mg/g. High-level Cd (II) adsorption capacity remained even after 5 recycling processes. Moreover, the adsorption capacity and mechanism were compared and proposed. All the results above revealed that the novel HMENF membrane was a promising adsorbent in the application of Cd (II) contained wastewater treatment.
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