Facile modification strategies on hydrochar-based carbon particles with hydrothermal carbonization from green pistachio hulls for the removal of cadmium ions from aqueous solutions
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Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer Heidelberg
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The aim of this study is based on the efficient removal of cadmium ions (Cd2+) from aqueous solutions with the adsorbent obtained by various modification strategies on hydrochar-based carbon particles obtained by hydrothermal carbonization from green pistachio hulls as a precursor. Hydrochloric acid (HCl), sodium hydroxide (NaOH), or phosphoric acid (H3PO4) were used to functionalize the surface to increase the adsorption capacity of hydrochar. Maximum Cd2+ adsorption capacity from environmental waters by PHHC-NaOH hydrochar at 298 K was found to be 526.31 mg/g. Surface morphology and chemical compositions of hydrochar were investigated by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), energy-dispersive spectroscopy (EDS), and thermogravimetric/differential (TG-DTA) and nitrogen adsorption/desorption analyses. Isotherm, kinetic, and thermodynamic properties were evaluated in detail. Also, possible mechanisms for Cd2+ binding on modified hydrochar were evaluated.
Açıklama
Anahtar Kelimeler
Pistachio green hull, Hydrothermal treatment, Hydrochar modification, Adsorption
Kaynak
Biomass Conversion and Biorefinery
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
