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Performance evaluation of polypyrrole–montmorillonite clay composite as a re-usable adsorbent for Cr(VI) remediation

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Abstract

A flexible composite adsorbent combination of polypyrrole and montmorillonite clay (PPy-MMT) has been prepared by in situ oxidative polymerization method. This well-achieved adsorbent has amphoteric characteristics and has been explored in many adsorption processes related to heavy metals removal, more especially Cr(VI) from the water phase. However, the progressive accumulation of Cr(VI) onto the adsorbent surface reduces its adsorption capacity before adsorbent depletion. This factor limits the application of the adsorbent due to high cost and environmental impact related to adsorbent disposal after use. Here, we report the feasibility of different regenerating agents to recover adsorbed Cr(VI) and activate the tunable surface charge of the adsorbent composite to restore its initial adsorption capacity until exhaustion. The recycled PPy-MMT adsorbents were characterized by FTIR, TGA and EDS analysis. At low solution pH, PPy-MMT is protonated resulting in high adsorption capacity for Cr(VI) through electrostatic attraction and ion exchange while simultaneously reducing Cr(VI) to less toxic Cr(III). The spent adsorbents were reversibly subjected to sequential adsorption–desorption cycles between adsorbent neutral state and the oxidized state using different concentrations of regenerating agents including NaOH, NH4OH, HCl, NH4Cl and HNO3, respectively. The results suggested that with 0.01 M NaOH and 0.5 M HCl, PPy-MMT could be used for over five cycles for Cr(VI) removal with more than 80% regeneration efficiency indicating potential applicability as a re-usable adsorbent for Cr(VI) removal.

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References

  1. Bhatnagar A, Minocha AK (2006) Conventional and non-conventional adsorbents for removal of pollutants from water—a review. Indian J Chem Technol 13:203–217

    CAS  Google Scholar 

  2. Rivera-Utrilla J, Sanchez-Polo M, Gomez-Serrano V, Alvarez PM, Alvim-Ferraz MCM, Dias JM (2011) Activated carbon modifications to enhance its water treatment applications: an overview. J Hazard Mater 187:1–23

    Article  CAS  Google Scholar 

  3. Chen D, Wang L, Ma Y, Yang W (2016) Super-adsorbent material based on functional polymer particles with a multilevel porous structure. NPG Asia Mater 8:e301–e308

    Article  Google Scholar 

  4. Akharame MO, Fatoki OS, Opeolu BO (2019) Regeneration and reuse of polymeric nanocomposites in wastewater remediation: the future of economic water management. Polym Bull 76:647–681

    Article  CAS  Google Scholar 

  5. Zanella O, Tessaro IC, Feris LA (2014) Desorption- and decomposition-based techniques for the regeneration of activated carbon. Chem Eng Technol 37:1447–1459

    Article  CAS  Google Scholar 

  6. Berenguer R, Marco-Lozar JP, Quijada C, Cazorla-Amoros D, Morallon E (2010) Electrochemical regeneration and porosity recovery of phenol-saturated granular activated carbon in an alkaline medium. Carbon 48:2734–2745

    Article  CAS  Google Scholar 

  7. Owlad M, Aroua MK, Daud WMA (2010) Hexavalent chromium adsorption on impregnated palm shell activated carbon with polyethyleneimine. Bioresour Technol 101:5098–5103

    Article  CAS  Google Scholar 

  8. Wang J, Pan K, He Q, Cao B (2013) Polyacrylonitrile/polypyrrole core/shell nanofiber mat for the removal of hexavalent chromium from aqueous solution. J Hazard Mater 244–245:121–129

    Article  Google Scholar 

  9. Setshedi KZ, Bhaumik M, Songwane S, Onyango MS, Maity A (2013) Exfoliated polypyrrole-organically modified montmorillonite clay nanocomposite as a potential adsorbent for Cr(VI) removal. Chem Eng J 222:86–197

    Article  Google Scholar 

  10. Jafari MT, Saraji M, Sherafatmand H (2014) Polypyrrole/montmorillonite nanocomposite as a new solid phase microextraction fiber combined with gas chromatography-corona discharge ion mobility spectrometry for the simultaneous determination of diazinon and fenthion organophosphorus pesticides. Anal Chim Acta 814:69–78

    Article  CAS  Google Scholar 

  11. Ruotolo LAM, Gubulin JC (2005) Chromium(VI) reduction using conducting polymer films. React Funct Polym 62:141–151

    Article  CAS  Google Scholar 

  12. Vakili M, Deng S, Cagnetta G, Wang W, Meng P, Liu D, Yu G (2019) Regeneration of chitosan-based adsorbents used in heavy metal adsorption: a review. Sep Purif Technol 224:373–387

    Article  CAS  Google Scholar 

  13. Momina SM, Isamil S (2018) Regeneration performance of clay-based adsorbents for the removal of industrial dyes: a review. RSC Adv 8:24571–24587

    Article  CAS  Google Scholar 

  14. Zhang X, Bai R (2003) Surface electric properties of polypyrrole in aqueous solutions. Langmuir 19:10703–10709

    Article  CAS  Google Scholar 

  15. Chen Y, Xu H, Wang S, Kang L (2014) Removal of Cr(VI) from water using polypyrrole/attapulgite core–shell nanocomposites: equilibrium, thermodynamics and kinetics. RSC Adv 4:17805–17811

    Article  CAS  Google Scholar 

  16. Bhaumik M, MaityA SVV, Onyango MS (2011) Enhanced removal of Cr(VI) from aqueous solution using polypyrrole/Fe3O4 magnetic nanocomposite. J Hazard Mater 190:381–390

    Article  CAS  Google Scholar 

  17. Ballav N, Maity A, Mishra SB (2012) High efficient removal of chromium(VI) using glycine doped polypyrrole adsorbent from aqueous solution. Chem Eng 198–199:536–546

    Article  Google Scholar 

  18. Neoh KG, Lau KKS, Wong VVT, Kang ET, Tan KL (1996) Structure and degradation behavior of polypyrrole doped with sulfonate anions of different sizes subjected to undoping—redoping cycles. Chem Mater 8:167–172

    Article  CAS  Google Scholar 

  19. Bagreev A, Rahman H, Bandosz TJ (2001) Thermal regeneration of a spent activated carbon previously used as hydrogen sulfide adsorbent. Carbon 39:1319–1326

    Article  CAS  Google Scholar 

  20. Yao W, Ni T, Chen S, Li H, Lu Y (2014) Graphene/Fe3O4 at polypyrrole nanocomposites as a synergistic adsorbent for Cr(VI) ion removal. Compos Sci Technol 99:15–22

    Article  CAS  Google Scholar 

  21. Lei Y, Qian X, Shen J, An X (2012) Integrated reductive/adsorptive detoxification of Cr(VI)-contaminated water by polypyrrole/cellulose fiber composite. Ind Eng Chem Res 51:10408–10415

    Article  CAS  Google Scholar 

  22. Wang H, Yuan X, Wu Y, Chen X, Leng L, Wang H, Li H, Zeng G (2015) Facile synthesis of polypyrrole decorated reduced graphene oxide-Fe3O4 magnetic composites and its application for the Cr(VI) removal. Chem Eng J 262:597–606

    Article  CAS  Google Scholar 

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Acknowledgements

This work was supported by the South African Council for Scientific and Industrial Research (CSIR) (Project Grant: 88568) and DST-NRF-DHET-Scarce Skills Development Fund. The authors acknowledge the University of the Witwatersrand for contributions to this project.

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Authors and Affiliations

  1. Polymers and Composites, Materials Science and Manufacturing, Council for Scientific and Industrial Research, P.O. Box 395, Pretoria, 0001, South Africa

    Lindani Mdlalose, Mohammed Balogun, Katlego Setshedi & Avashnee Chetty

  2. Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand (WITS), P/Bag 3, Johannesburg, 2050, South Africa

    Luke Chimuka

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  1. Lindani Mdlalose
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  2. Mohammed Balogun
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  3. Katlego Setshedi
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Correspondence to Lindani Mdlalose.

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Mdlalose, L., Balogun, M., Setshedi, K. et al. Performance evaluation of polypyrrole–montmorillonite clay composite as a re-usable adsorbent for Cr(VI) remediation. Polym. Bull. 78, 4685–4697 (2021). https://doi.org/10.1007/s00289-020-03338-6

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  • DOI: https://doi.org/10.1007/s00289-020-03338-6

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