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Application and characterization of grafted polytetrafluoroethylene fiber for enhanced adsorption of Cu(II) in aqueous solutions

  • Materials, Metallurgy, Chemical and Environmental Engineering
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Abstract

An enhanced adsorption and desorption procedure of Cu(II) onto green synthesized acrylic acid grafted polytetrafluoroethylene fiber (i.e. AA-PTFE) was conducted with various chemical methods. The results show that the optimal adsorption condition is in acetic acid, sodium acetate (HAc-NaAc) buffer solution (pH=6.80) with the initial concentration of 0.2 mg/mL. The process is very fast initially and equilibrium time is 12 h with a high Cu(II) uptake of 112.26 mg/g at 298 K. Various thermodynamic parameters indicate that the adsorption process is spontaneous and endothermic in nature. In the elution test, 2 mol/L HCl solution achieves satisfactory elution rate and shows no significant decrease after 5 adsorption-desorption cycle, which indicates that AA-PTFE can be regenerated and reused, and due to which a reasonable amount of nondegradable polymer material is avoided in industrial use. Finally, PTFE, AA-PTFE fiber, and Cu(II) loaded AA-PTFE fiber were characterized with various techniques, including IR spectroscopic technique, SEM and EDS.

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Authors and Affiliations

  1. School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China

    Jiong-hui Li  (厉炯慧)

  2. Department of Applied Chemistry, Zhejiang Gongshang University, Hangzhou, 310012, China

    Xi-xi Miao  (缪喜喜), Xin-yi Chen  (陈昕怡), Li Lu  (逯丽), Yi Yang  (杨奕) & Chun-hua Xiong  (熊春华)

  3. School of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou, 310018, China

    Ya-qin Fu  (傅雅琴)

Authors
  1. Jiong-hui Li  (厉炯慧)
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  2. Xi-xi Miao  (缪喜喜)
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  3. Xin-yi Chen  (陈昕怡)
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  4. Li Lu  (逯丽)
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  5. Yi Yang  (杨奕)
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  6. Ya-qin Fu  (傅雅琴)
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  7. Chun-hua Xiong  (熊春华)
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Corresponding author

Correspondence to Chun-hua Xiong  (熊春华).

Additional information

Foundation item: Project(20133326110006) supported by PhD Programs Foundation of Ministry of Education of China; Project(2005002) supported by Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, China; Project(YR2015002) supported by Zhejiang Provincial Top Key Academic Discipline of Chemical Engineering and Technology of Zhejiang Sci-Tech University, China

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Li, Jh., Miao, Xx., Chen, Xy. et al. Application and characterization of grafted polytetrafluoroethylene fiber for enhanced adsorption of Cu(II) in aqueous solutions. J. Cent. South Univ. 23, 2513–2519 (2016). https://doi.org/10.1007/s11771-016-3311-x

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  • DOI: https://doi.org/10.1007/s11771-016-3311-x

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