Adsorption of Cr(III) from an Aqueous Solution by Chitosan Beads Modified with Sodium Dodecyl Sulfate (SDS)  

作　　者：Munkhpurev Bat-Amgalan Zoltuya Khashbaatar David Eva Vanessa Anak Muhammad Nabil Md Sari Naoto Miyamoto Naoki Kano Hee-Joon Kim Ganchimeg Yunden Munkhpurev Bat-Amgalan;Zoltuya Khashbaatar;David Eva Vanessa Anak;Muhammad Nabil Md Sari;Naoto Miyamoto;Naoki Kano;Hee-Joon Kim;Ganchimeg Yunden(Graduate School of Science and Technology, Niigata University, Niigata, Japan;Department of Chemistry and Chemical Engineering, Faculty of Engineering, Niigata University, Niigata, Japan;Department of Chemical Engineering, School of Applied Sciences, Mongolian University of Sciences and Technology, Ulaanbaatar, Mongolia)

机构地区：[1]Graduate School of Science and Technology, Niigata University, Niigata, Japan [2]Department of Chemistry and Chemical Engineering, Faculty of Engineering, Niigata University, Niigata, Japan [3]Department of Chemical Engineering, School of Applied Sciences, Mongolian University of Sciences and Technology, Ulaanbaatar, Mongolia

出　　处：《Journal of Environmental Protection》2021年第11期939-960,共22页环境保护（英文）

摘　　要：This study is to prepare chitosan beads modified with sodium dodecyl sulfate (SDS) to effectively remove Cr(III) from an aqueous solution. The characterizations of SDS-chitosan by scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), Fourier transform-infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) proved the successful synthesis of the adsorbent. The adsorption of Cr(III) on the SDS material was investigated by varying experimental conditions such as pH, contact time and adsorbent dosage. The maximum adsorption capacity of SDS-chitosan for Cr(III) was estimated to be 3.42 mg?g^-1. The results of adsorption kinetics and isothermal models show that the adsorption process conforms to the pseudo-second-order and Langmuir isotherm models, indicating that the adsorption is single-layer chemical adsorption. Thermodynamic analyses indicate that the adsorption of Cr(III) is an endothermic reaction. These results show that the new adsorbent has obvious application prospect to eliminate Cr(III).This study is to prepare chitosan beads modified with sodium dodecyl sulfate (SDS) to effectively remove Cr(III) from an aqueous solution. The characterizations of SDS-chitosan by scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), Fourier transform-infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) proved the successful synthesis of the adsorbent. The adsorption of Cr(III) on the SDS material was investigated by varying experimental conditions such as pH, contact time and adsorbent dosage. The maximum adsorption capacity of SDS-chitosan for Cr(III) was estimated to be 3.42 mg?g^-1. The results of adsorption kinetics and isothermal models show that the adsorption process conforms to the pseudo-second-order and Langmuir isotherm models, indicating that the adsorption is single-layer chemical adsorption. Thermodynamic analyses indicate that the adsorption of Cr(III) is an endothermic reaction. These results show that the new adsorbent has obvious application prospect to eliminate Cr(III).

关 键 词：Chitosan Beads Sodium Dodecyl Sulfate (SDS) Trivalent Chromium Ions (Cr(III)) ADSORPTION Adsorption Isotherms Adsorption Kinetics 

分 类 号：O64[理学—物理化学]