Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/11829
Title: Modification of grape pulp with citric acid for the production of natural ion exchanger resin and removal of Pb (II) and Cd (II) from aqueous solutions: kinetic, thermodynamics, and mechanism
Authors: Arslanoğlu, Esra
Eren, Muhammet Ş. A.
Arslanoğlu, Hasan
Çiftçi, Harun
Keywords: Grape pulp waste
Ion exchange resin
Lead (II) and cadmium (II) removal
Adsorption-ion exchange
Desorption
Isotherm-kinetic-thermodynamic
Publisher: Springer
Abstract: In this study, grape pulp (MGP) modified with NaOH and citric acid was used in the production of natural ion exchangers. The effects of parameters such as initial pH, MGP dosage, temperature, initial metal ion concentration, and contact time on the removal of Pb (II) and Cd (II) ions from aqueous solutions using modified materials were investigated by batch experiments. It was found that the experimental kinetic data fit the second-order model, and the activation energy for Pb (II) and Cd (II) adsorption processes were 20.68 and 38.61 kj mol(-1), respectively. Although the initial adsorption rate increases with increasing temperature, the adsorption efficiency slightly decreases. It was calculated that the equilibrium data fit the Langmuir isotherm better, and the maximum adsorption capacities for Pb (II) and Cd (II) adsorption processes were approximately 1.496 and 1.022 mmol g(-1) at 25 degrees C, respectively. Thermodynamic analysis has shown that the adsorption processes of Pb (II) and Cd (II) are exothermic (Delta H degrees(Pb) = -35.68 kj mol(-1), Delta H degrees(Cd) = -21.19 kj mol(-1)) and have a self-developing character.
URI: https://doi.org/10.1007/s13399-021-01521-x
https://hdl.handle.net/11147/11829
ISSN: 2190-6815
2190-6823
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File SizeFormat 
Arslanoğlu2021_Article.pdf
  Until 2025-01-01
745.25 kBAdobe PDFView/Open    Request a copy
Show full item record



CORE Recommender

SCOPUSTM   
Citations

3
checked on Mar 22, 2024

WEB OF SCIENCETM
Citations

2
checked on Mar 23, 2024

Page view(s)

29,952
checked on Mar 25, 2024

Download(s)

2
checked on Mar 25, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.