共 67 条
Using deep eutectic solvent dissolved low-value cotton linter based efficient magnetic adsorbents for heavy metal removal
被引:5
作者:

Ye, Sihong
论文数: 0 引用数: 0
h-index: 0
机构:
Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China

Xu, Mingli
论文数: 0 引用数: 0
h-index: 0
机构:
Anhui Agr Univ, Dept Life Sci, Hefei, Peoples R China Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China

Sun, Hui
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h-index: 0
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Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China

Ni, Ying
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h-index: 0
机构:
Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China

Wang, Rui
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h-index: 0
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Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China

Ye, Runping
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h-index: 0
机构:
Nanchang Univ, Inst Appl Chem, Sch Chem & Chem Engn, Key Lab Jiangxi Prov Environm & Energy Catalysis, Nanchang, Peoples R China Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China

Wan, Lingzhong
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h-index: 0
机构:
Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China

Liu, Fangzhi
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Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China

Deng, Xiaonan
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h-index: 0
机构:
Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China

Wu, Juan
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h-index: 0
机构:
Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China
机构:
[1] Anhui Acad Agr Sci, Inst Cotton, Hefei, Peoples R China
[2] Anhui Agr Univ, Dept Life Sci, Hefei, Peoples R China
[3] Nanchang Univ, Inst Appl Chem, Sch Chem & Chem Engn, Key Lab Jiangxi Prov Environm & Energy Catalysis, Nanchang, Peoples R China
关键词:
IONIC LIQUIDS;
XPS SPECTRA;
CELLULOSE;
FIBERS;
HYDROGEL;
D O I:
10.1039/d3ra01248d
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
In this study, a novel magnetic bio-adsorbent was synthesized by modifying cotton linter (CL) cellulose with deep eutectic solvents (DESs) and Fe3O4 magnetic nanoparticles. The adsorption capacity of CL, Fe3O4/CL, Fe3O4/CL-oxidation, and Fe3O4/CL-DES for Cu2+ was 11.0, 66.1, 85.7, and 93.1 mg g(-1), respectively, under the optimal adsorption conditions of an initial pH value of 6.0, stirring rate of 300 rpm, and a temperature of 30 degrees C. The presence of Fe3O4 nanoparticles increased the proportion of hydroxyl groups and thus improved the ion-exchange ability of Cu2+. The dissolution of DES significantly decreased fiber crystallinity and increased the number of hydroxyl group (amorphous regions increased), thus improving the chelation reaction of Cu2+, which was favorable for surface adsorption. In addition, we used the Langmuir and Freundlich isothermal models to simulate the adsorption behavior of Fe3O4/CL-DES, and the results indicated that Cu2+ follows a Freundlich isotherm model of multilayer adsorption. The fitting of the adsorption kinetics model indicated that the adsorption process involves multiple adsorption mechanisms and can be described by a quasi-second-order model. These results provide a potential method for the preparation of high-efficiency adsorbents from low-value cotton linter, which has broad application prospects in wastewater treatment.
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收藏
页码:13592 / 13603
页数:12
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