Chankanai Zeolite Modified with Heteroatomic Derivatives of 3-Aminopropyltriethoxysilane as an Effective Sorbent for Ag(I), Co(II) DOI Open Access
A. M. Nalibayeva, С. Н. Адамович, А. Bold

et al.

Water, Journal Year: 2024, Volume and Issue: 16(23), P. 3416 - 3416

Published: Nov. 27, 2024

Bis-N,N-(3-triethoxysilylpropyl)thiosemicarbazide 3 was obtained by the condensation of 3-aminopropyltriethoxysilane 1 with thiosemicarbazide 2. Ethyl ether N-[3-(triethoxysilyl)propyl]-b-alanine 5 interaction an equimolar amount aminopropyltriethoxysilane and ethyl acrylate 4 (aza-Michael reaction). Synthesized functional organosilanes were successfully immobilized on surface natural zeolite Z (Chankanai deposit, Kazakhstan). Compounds materials have been studied NMR IR Fourier spectroscopy X-ray diffraction analysis. The elemental composition morphology modified zeolites Z3 Z5 using SEM-EDX modification leads to changes in structure material: enlargement particles agglomerates, becomes more homogeneous less porous. This indicates a high degree coverage modifier layer. study sorption characteristics initial (Z3 Z5) showed capacity relative Ag(I) Co(II) (static capacity, SSC = 35.85–23.92 mg/g), whereas values for 20.63 16.64 mg/g. adsorption ions solutions prepared Co(NO3)2·6H2O, AgNO3 distilled water. choice concentration metal ions, as well pH solutions, corresponded wastewater from real electroplating production. Zeolites can be used various sectors industry, ecology medical purposes inexpensive effective adsorbents (enterosorbents) heavy noble metals.

Language: Английский

Recovery of strategic metals (cobalt, nickel) from lithium-ion batteries through adsorption and desorption: Insights in desorption mechanisms and ultrasound enhancement DOI Creative Commons
Naby Conte, José María Gómez Gómez,

M. Comino

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132064 - 132064

Published: Feb. 1, 2025

Language: Английский

Citations

0
Highly effective removal of cobalt from aqueous solution via reusable nanocomposite of metal organic frame work and activated algae encapsulated onto double layer biopolymer DOI
Amira K. Hajri,

Sahr A. Alsherari,

Marzough Aziz Albalawi

et al.

Inorganic Chemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 114162 - 114162

Published: Feb. 1, 2025

Language: Английский

Citations

0
Engineering high-performance CTAB-functionalized magnesium silicate nano-adsorbent for efficient removal of Cd2+, Co2+, and Cu2+ from single-metal aqueous solutions DOI Creative Commons

Marwa H. Shemy,

Reham A. Mohamed,

Ahmed Abdelkhalek

et al.

Frontiers in Chemistry, Journal Year: 2025, Volume and Issue: 13

Published: May 8, 2025

The development of highly efficient, recyclable adsorbents for heavy metal remediation remains a critical challenge in environmental engineering. This study introduces novel cetyltrimethylammonium bromide-functionalized magnesium silicate (CTAB/MS) nano-adsorbent was synthesized through multi-step surface modification serpentinite involving intercalation with dimethyl sulfoxide, methanol treatment, and CTAB incorporation. resulting nanostructure extensively characterized applied the removal cadmium (Cd 2+ ), cobalt (Co copper (Cu ) ions from contaminated water. characterization findings confirmed significant morphological structural modifications, including enhanced area, functional group availability, mesoporosity, which contributed to adsorption performance. kinetic modeling that process predominantly followed pseudo-first-order model, suggesting rapid physisorption mechanisms controlled initial phase. Equilibrium studies revealed Langmuir isotherm indicating monolayer on homogeneous active sites, maximum capacities 491.9 mg/g 481.8 434.3 at 303 K. Furthermore, statistical physics-based model incorporating steric energetic parameters provided deeper mechanistic insights. energy (ΔE) values remained below 12.66 kJ/mol, confirming physical process, while thermodynamic analysis indicated an exothermic spontaneous nature, as evidenced by negative free enthalpy (G) internal (E int values. recyclability assessment demonstrated CTAB/MS retained over 70% its efficiency after five consecutive regeneration cycles, underscoring long-term applicability water treatment. highlights potential advanced, cost-effective, sustainable solution large-scale purification.

Language: Английский

Citations

0
Chankanai Zeolite Modified with Heteroatomic Derivatives of 3-Aminopropyltriethoxysilane as an Effective Sorbent for Ag(I), Co(II) DOI Open Access
A. M. Nalibayeva, С. Н. Адамович, А. Bold

et al.

Water, Journal Year: 2024, Volume and Issue: 16(23), P. 3416 - 3416

Published: Nov. 27, 2024

Bis-N,N-(3-triethoxysilylpropyl)thiosemicarbazide 3 was obtained by the condensation of 3-aminopropyltriethoxysilane 1 with thiosemicarbazide 2. Ethyl ether N-[3-(triethoxysilyl)propyl]-b-alanine 5 interaction an equimolar amount aminopropyltriethoxysilane and ethyl acrylate 4 (aza-Michael reaction). Synthesized functional organosilanes were successfully immobilized on surface natural zeolite Z (Chankanai deposit, Kazakhstan). Compounds materials have been studied NMR IR Fourier spectroscopy X-ray diffraction analysis. The elemental composition morphology modified zeolites Z3 Z5 using SEM-EDX modification leads to changes in structure material: enlargement particles agglomerates, becomes more homogeneous less porous. This indicates a high degree coverage modifier layer. study sorption characteristics initial (Z3 Z5) showed capacity relative Ag(I) Co(II) (static capacity, SSC = 35.85–23.92 mg/g), whereas values for 20.63 16.64 mg/g. adsorption ions solutions prepared Co(NO3)2·6H2O, AgNO3 distilled water. choice concentration metal ions, as well pH solutions, corresponded wastewater from real electroplating production. Zeolites can be used various sectors industry, ecology medical purposes inexpensive effective adsorbents (enterosorbents) heavy noble metals.

Language: Английский

Citations

0