Adsorption of Pb (II) ions from aqueous solutions onto paliurus spina-christimill. Frutis and seeds

Savran A., Kul A. R., Kubilay S., Selcuk N. C.

Fresenius Environmental Bulletin, cilt.29, sa.8, ss.6576-6583, 2020 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29 Sayı: 8
  • Basım Tarihi: 2020
  • Dergi Adı: Fresenius Environmental Bulletin
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Agricultural & Environmental Science Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, Environment Index, Geobase, Greenfile, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.6576-6583
  • Anahtar Kelimeler: Adsorption, Isotherms, Kinetics, Lead, Thermodynamic
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

In this study, Paliurus spina-christi Mill, frutis and seeds (PSCFS) was used as an adsorbent for Pb(II) ions removal from water solutions. The effect of various experimental parameters was investigated using a batch adsorption technique. In the adsorption experimental, temperature, contact time and concentrations effects upon Pb (II) ions on PSCFS were thoroughly examined at pH 5.2. Results show that a temperature value of 45 °C is favorable for the adsorption of Pb (II) ions. The isothermal data could be well described by the Freundlich equation. The kinetic data fit well with the pseudo-second-order kinetic model. The adsorption capacity of PSCFS was found to be 14.97°1 mg g- 1 at 45 °C according to pseudo-second-order model data. Thermodynamic parameters such as activation energy (Ea) and change in the free energy (AG°), the enthalpy (AH°), and the entropy (AS°) were also evaluated. The all adsorption process was endothermic and spontaneous. The results indicate that PSCFS could be employed as low-cost materials for removal from water of Pb (II) ions.