Nitrogen? and oxygen?doped carbon particles produced from almond shells by hydrothermal method for efcient Pb(II) and Cd(II) adsorption
Yükleniyor...
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer Science and Business Media
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, a two-step method was applied to obtain an efective adsorbent for cadmium (Cd) (II) and lead (Pb)(II) adsorption. The frst stage includes the production of activated carbon (AC) from almond shells, which is agricultural waste, by
microwave heating and potassium hydroxide (KOH) chemical agent. The second stage includes nitrogen and oxygen doping
by hydrothermal heating treatment of the obtained ACs with nitric acid. The obtained materials were characterized by thermogravimetric/diferential thermal analyser (TG–DTA); Fourier transform infrared spectroscopy (FTIR); scanning electron
microscope (SEM); energy-dispersive spectroscopy (EDS); C, H, N, S elemental analysis; and nitrogen adsorption analyses.
The adsorption performance, mechanism, kinetics, and thermodynamics of nitrogen- and oxygen-doped activated carbons
were evaluated. The obtained isotherm and kinetic results showed that the adsorption of Cd (II) and Pb (II) on nitrogen- and
oxygen-doped ACs followed Langmuir isotherm and pseudo-second-order kinetics. The adsorption capacity values (Qm)
obtained for Cd (II) and Pb (II) adsorption were 106.38 mg/g and 76.33 mg/g, respectively.
Açıklama
Anahtar Kelimeler
Microwave pyrolysis, Nitrogen and oxygen doping, Cadmium, Lead, Adsorption
Kaynak
Biomass Conversion and Biorefinery
WoS Q Değeri
N/A
Scopus Q Değeri
Q3
Cilt
Early Access
Sayı
Künye
Saka, C., Teğin, İ., Kahvecioğlu, K. ve Yavuz, Ö. (2023). Nitrogen‑ and oxygen‑doped carbon particles produced from almond shells by hydrothermal method for efcient Pb(II) and Cd(II) adsorption. Biomass Conversion and Biorefinery, 1-14. Early Access.
