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Preparation of corn stalk-based adsorbents and their specific application in metal ions adsorption

  • Ya-Ting Wang , Hou Chen EMAIL logo , Dong-Ju Wang , Liang-Jiu Bai , Hui Xu and Wen-Xiang Wang
Published/Copyright: May 24, 2016
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Chemical Papers
From the journal Chemical Papers Volume 70 Issue 9

Abstract

Corn stalk-based adsorbents modified from corn stalk were prepared by Cu(0)-mediated reversible-deactivation radical polymerization (Cu(0)-mediated RDRP). They were applied to remove metal ions and they exhibited good adsorption capacity, especially for Hg(II). Adsorption properties of corn stalk can be enhanced by introducing cyano, amino, amidoxime, and carboxyl groups onto its surface, which results in efficient adsorbents for different metal ions. TGA, SEM, EA, and FTIR analyses were employed to characterize the structures of corn stalk-graft-polyacrylonitrile (CS-g-PAN), corn stalk-graft-polyacrylamide (CS-g-PAM), amidoxime corn stalk-graft-polyacrylonitrile (AO CS-g-PAN) and carboxyl corn stalk-graft-poly(methyl acrylate) (CO CS-g-PMA). The maximum adsorption capacity for Hg(II) was 8.06 mmol g−1 of AO CS-g-PAN. Kinetics of the Hg(II) adsorption on AO CS-g-PAN was found to follow the pseudo-second-order model and the adsorption isotherms were well fitted with the Freundlich isotherm model.

Key words: corn stalk; modification; adsorption; metal ions

Acknowledgements

This study was supported by the National Natural Science Foundation of China (Nos. 51573075, 21404051, and 21404052), the Natural Science Foundation of the Shandong Province (Nos. ZR2014BQ016 and BS2014CL 040), and the Program for Scientific Research Innovation Team in Colleges and Universities of the Shandong Province.

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Received: 2015-8-16
Revised: 2015-12-23
Accepted: 2016-2-8
Published Online: 2016-5-24
Published in Print: 2016-9-1

© 2016 Institute of Chemistry, Slovak Academy of Sciences

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https://doi.org/10.1515/chempap-2016-0064
Keywords for this article
corn stalk; modification; adsorption; metal ions

Articles in the same Issue

  1. Review
  2. Plant extracts as “green” corrosion inhibitors for steel in sulphuric acid
  3. Original Paper
  4. Use of 6-O-mono-substituted derivatives of β-cyclodextrin-bearing substituent with two permanent positive charges in capillary electrophoresis
  5. Original Paper
  6. Development of ICP-MS and ICP-OES methods for determination of gadolinium in samples related to hospital waste water treatment
  7. Original Paper
  8. Alkyl glycosides as potential anti-Candida albicans growth agents
  9. Original Paper
  10. Preparation of corn stalk-based adsorbents and their specific application in metal ions adsorption
  11. Original Paper
  12. Treatment of metal-plating waste water by modified direct contact membrane distillation
  13. Original Paper
  14. Influence of pH and cationic surfactant on stability and interfacial properties of algerian bitumen emulsion
  15. Original Paper
  16. Synthesis, structural and spectroscopic properties of asymmetric schiff bases derived from 2,3-diaminopyridine
  17. Original Paper
  18. Syntheses of cardanol-based cationic surfactants and their use in emulsion polymerisation
  19. Original Paper
  20. Synthesis of urethane—acrylic multi-block copolymers via electrochemically mediated ATRP
  21. Original Paper
  22. Diazene sulphonate as a cross-linking agent for polymers with pendant triarylamine hole-conducting units
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  31. Original Paper
  32. Chemoselective synthesis of 1,2-disubstituted benzimidazoles in lactic acid without additive
  33. Original Paper
  34. Sorption properties of sheep wool irradiated by accelerated electron beam
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