Eco-friendly Elderberry based sorbent for removing Pb2+ ions from aqueous solutions

Authors

  • Jovana Miloje Bošnjaković, Mrs Research and Development Institute Lola L.T.D., KnezaVišeslava 70A, 11030 Belgrade, Serbia
  • Mladen Dobrivoje Bugarčić Institute for Technology of Nuclear and Other Raw Materials, Bulevar Franše d'Eperea 86, 11000 Belgrade
  • Natalija Čutović Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia
  • Aleksandar A. Jovanović Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia
  • Srećko Manasijević Research and Development Institute Lola L.T.D., KnezaVišeslava 70A, 11030 Belgrade, Serbia
  • Aleksandar D. Marinković Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia
  • Zlate S. Veličković Military Academy, University of Defense, Generala Pavla Jurišića Šturma 33, 11000, Belgrade, Serbia

DOI:

https://doi.org/10.30544/710

Keywords:

Elderberry, polyethyleneimine, lead sorption, heavy metals

Abstract

Elderberry (Sambucus nigra) pith was modified with polyethyleneimine (PEI) in order to improve the adsorption properties. Characterization of both dried Sambucus nigra pith (DSNP) and amino modification of elderberry pith with branched PEI (PEI/DSNP) was performed by: Fourier-transform infrared spectroscopy (FTIR), optical microscopy, and porosity determination. The amine and ester number, as well as acid value, were determined on DSNP and PEI/DSNP samples using standard volumetric methods. The samples were used as adsorbents for Pb2+ ions from an aqueous solution in a batch system. The obtained results were fitted using suitable equilibrium isotherm and kinetic models. The maximum adsorption capacity for Pb2+ ions on DSNP and aminаted sample, obtained using Langmuir adsorption isotherm at 298 K, are 18.9 and 47.8 mg g-1, respectively. Based on the kinetic studies, the adsorption process follows the pseudo second-order model. Thermodynamic parameters showed that the adsorption process is endothermic and spontaneous. In general, the overall adsorption process was improved by modifying starting material with branched PEI modifier by introducing large numbers of amino functionalities having high affinity to cations.

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Published

2022-03-30

How to Cite

Bošnjaković, Jovana Miloje, Mladen Dobrivoje Bugarčić, Natalija Čutović, Aleksandar A. Jovanović, Srećko Manasijević, Aleksandar D. Marinković, and Zlate S. Veličković. 2022. “Eco-Friendly Elderberry Based Sorbent for Removing Pb2+ Ions from Aqueous Solutions”. Metallurgical and Materials Engineering 28 (2):391-401. https://doi.org/10.30544/710.

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Section

Research