吸附
水溶液
化学
微球
傅里叶变换红外光谱
朗缪尔吸附模型
核化学
海藻酸钙
动力学
色谱法
化学工程
钙
有机化学
量子力学
物理
工程类
作者
Yongcun Song,Li–Ye Yang,Yangguang Wang,Di Yu,Jiafeng Shen,Xiao–kun Ouyang
标识
DOI:10.1016/j.ijbiomac.2018.12.112
摘要
In this work, amino-functionalized Santa Barbara Amorphous-15/calcium alginate ([email protected]) microspheres were fabricated and characterized by FTIR, SEM, XRD, TGA, and XPS analyses. The Pb(II) adsorption properties of the [email protected] microspheres were studied in terms of the effects of the adsorption time, adsorbent dose, solution pH, temperature, and initial concentration of Pb(II) on the adsorption capacity. At pH 6 and 298 K, the adsorption reached equilibrium after 100 min and the sample exhibited a good adsorption effect, affording a maximum adsorption capacity of 1029.58 mg/g and a removal rate as high as 98.99%. The adsorption process conformed to the Langmuir model (R2 = 0.9937) and followed the pseudo-second-order kinetics model (R2 = 0.9995). Regeneration experiments showed that the removal rate of the sample reached 75% even after 6 cycles. Overall, this study provides new insights into the development of novel, highly efficient, and repeatable degradation materials for the removal of Pb(II).
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