Various fillers (commercial, nipa palm, sisal activated carbon, zeolite) were incorporated with regenerated cellulose matrix that dissolved using lithium chloride/N, N-dimethylacetamide solution. The biosorbent films were successfully prepared via solution casting and then characterized by Fourier transform infrared spectrometer (FTIR), X-ray Diffractometer (XRD), thermogravimetric analyzer (TGA), and scanning electron microscope (SEM). The biocomposite films with embedded commercial activated carbon exhibited the largest adsorption capacity of methylene blue (146.81 mg g−1). Although the adsorption ability of the nipa palm and sisal activated carbon biocomposite was lower than the commercial activated carbon biosorbent film, both nipa palm and sisal activated carbon still could potentially be used as an alternative filler for cationic dye removal. On the contrary, zeolite had low adsorption efficiency owing to its morphology. The equilibrium adsorption experiment revealed that the Langmuir isotherm model best fitted the biocomposite films with commercial and sisal activated carbon, whereas the Freundlich adsorption model suited the biosorbent films with nipa palm activated carbon and zeolite than other models. The kinetics results of adsorption for all biocomposite films were well described using a pseudo-second-order kinetic model. The cellulose/activated carbon films would be promisingly utilized as a biosorbent for treatment of dye-contaminated wastewater.

中文翻译：

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纤维素基吸附剂生物复合膜去除阳离子染料的吸附等温线和动力学

将各种填料（商业、尼帕棕榈、剑麻活性炭、沸石）与使用氯化锂/N, N-二甲基乙酰胺溶液溶解的再生纤维素基质结合。通过溶液浇铸成功制备了生物吸附膜，然后通过傅里叶变换红外光谱仪 (FTIR)、X 射线衍射仪 (XRD)、热重分析仪 (TGA) 和扫描电子显微镜 (SEM) 对其进行了表征。嵌入商业活性炭的生物复合膜表现出最大的亚甲基蓝吸附能力（146.81 mg g-1）。尽管尼帕棕榈和剑麻活性炭生物复合材料的吸附能力低于商业活性炭生物吸附膜，但尼帕棕榈和剑麻活性炭仍有可能用作去除阳离子染料的替代填料。相反，沸石由于其形态而具有低吸附效率。平衡吸附实验表明，Langmuir 等温线模型最适合含有商业和剑麻活性炭的生物复合膜，而 Freundlich 吸附模型比其他模型更适合含有尼帕棕榈活性炭和沸石的生物吸附膜。使用伪二级动力学模型很好地描述了所有生物复合膜的吸附动力学结果。纤维素/活性炭薄膜有望用作生物吸附剂来处理染料污染的废水。平衡吸附实验表明，Langmuir 等温线模型最适合含有商业和剑麻活性炭的生物复合膜，而 Freundlich 吸附模型比其他模型更适合含有尼帕棕榈活性炭和沸石的生物吸附膜。使用伪二级动力学模型很好地描述了所有生物复合膜的吸附动力学结果。纤维素/活性炭薄膜有望用作生物吸附剂来处理染料污染的废水。平衡吸附实验表明，Langmuir 等温线模型最适合含有商业和剑麻活性炭的生物复合膜，而 Freundlich 吸附模型比其他模型更适合含有尼帕棕榈活性炭和沸石的生物吸附膜。使用伪二级动力学模型很好地描述了所有生物复合膜的吸附动力学结果。纤维素/活性炭薄膜有望用作生物吸附剂来处理染料污染的废水。