Characterization and synthesis of new adsorbents with some natural waste materials for the purification of aqueous solutions

被引：4
作者：
Lv, Hongying [1 ]
Zhang, Wenxin [1 ]
Hosseini, Maryam [2 ]
Samani, Majid Riahi [2 ]
Toghraie, Davood [3 ]
机构：
[1] Jiangsu Univ Technol, Sch Chem & Environm Engn, Jiangsu Key Lab Ewaste Recycling, Changzhou 213001, Peoples R China
[2] Islamic Azad Univ, Dept Civil Engn, Khomeinishahr Branch, Khomeinishahr, Iran
[3] Islamic Azad Univ, Dept Mech Engn, Khomeinishahr Branch, Khomeinishahr, Iran
来源：
JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2023年 / 336卷
关键词：
Polyaniline; Chromium; Adsorption; Composite; Natural waste; HEXAVALENT CHROMIUM; MAGNETIC NANOCOMPOSITE; ENHANCED REMOVAL; POLYANILINE; CR(VI); POLYPYRROLE; COMPOSITE; IONS; NANOPARTICLES; OPTIMIZATION;
D O I：
10.1016/j.jenvman.2023.117660
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, hexavalent chromium Removal from aqueous environments was investigated by using polyaniline composites with some natural waste materials. Batch experiments were used, and some parameters such as contact time, pH and adsorption isotherms were determined for the best composite with the highest removal efficiency. Scanning Electron Microscope (SEM), Fourier Transform Infrared (FTIR) spectroscopy, and X-ray Diffraction (XRD) were used to characterize the composites. According to the results, the polyaniline/walnut shell charcoal/PEG composite outperformed other composites and showed the highest chromium removal effi-ciency of 79.22%. Polyaniline/walnut shell charcoal/PEG has a larger specific surface area of 9.291 (m2/gr) which leads to an increase in its removal efficiency. For this composite, the highest removal efficiency was obtained at the pH = 2 and 30 min contact time. The maximum calculated adsorption capacity was 500 mg/g.
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页数：6
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