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Removal of nickel ions from aqueous solutions by 2-hydroxyethyl acrylate/itaconic acid hydrogels optimized with response surface methodology

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  • المصدر:
    Gels
  • نوع التسجيلة:
    Electronic Resource
  • الدخول الالكتروني :
    http://cer.ihtm.bg.ac.rs/bitstream/id/21236/bitstream_21236.pdf
    info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172015/RS
    info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172062/RS
  • معلومة اضافية
    • Publisher Information:
      MDPI 2021
    • Added Details:
      Antić, Katarina M.
      Onjia, Antonije
      Vasiljević-Radović, Dana
      Veličković, Zlate
      Tomić, Simonida Lj.
    • نبذة مختصرة :
      The adsorption of Ni2+ ions from water solutions by using hydrogels based on 2-hydroxyethyl acrylate (HEA) and itaconic acid (IA) was studied. Hydrogel synthesis was optimized with response surface methodology (RSM). The hydrogel with the best adsorption capacity towards Ni2+ ions was chosen for further experiments. The hydrogel was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis before and after the adsorption of Ni2+ ions. Batch equilibrium experiments were conducted to investigate the influence of solution pH, hydrogel weight, ionic strength, adsorption time, temperature and initial concentration of nickel ions on the adsorption. Time-dependent adsorption fitted the best to the pseudo-second-order kinetic model. A thermodynamic study revealed that the adsorption was an exothermic and non-spontaneous process. Five isotherm models were studied, and the best fit was obtained with the Redlich–Peterson model. Consecutive adsorption/desorption studies indicated that the HEA/IA hydrogel can be efficiently used as a sorbent for the removal of Ni2+ ions from the water solution. This study develops a potential adsorbent for the effective removal of trace nickel ions.
    • الموضوع:
      desorption; hydrogel; itaconic acid; nickel removal; response surface methodology; article
    • Note:
      Gels
      English
    • Other Numbers:
      RSPST oai:cer.ihtm.bg.ac.rs:123456789/4897
      2310-2861
      https://cer.ihtm.bg.ac.rs/handle/123456789/4897
      34842699
      10.3390/gels7040225
      2-s2.0-85119950841
      000737766900001
      1362962014
    • Contributing Source:
      UIVERSITY OF BELGRADE
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.on1362962014
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