Effective and realistic sequestration of Sr2+ and B3+ ions from the aqueous environments using coral reefs based Ca-MCM-41: Gulf of Suez as case study DOI Creative Commons
Alim A. Sayed, Ahmed M. El‐Sherbeeny,

G. Abdelgawad

et al.

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

Published: April 16, 2025

A mesoporous calcium-bearing siliceous framework (Ca-MCM-41) was synthesized using natural coral reef carbonate rocks as precursors. The structural characterization, confirmed through XRD, SEM, FT-IR, and BET analyses, validated the formation of MCM-41 with well-defined properties a high surface area 159.6 m2/g. developed Ca-MCM-41 evaluated potential adsorbent for removal Sr2+ B3+ ions from both aqueous solutions real seawater samples collected Gulf Suez, Egypt. adsorption capacity at saturation reached 285.9 mg/g 86.1 B3+, demonstrating framework's affinity these contaminants. mechanisms were elucidated steric energetic parameters, derived statistical physics-based isotherm models. exhibited higher active site density (148.9 mg/g) compared to (54.8 mg/g), explaining its superior sequestration performance strontium ions. Each receptor capable accommodating up three 2 ions, indicating multi-ionic interaction process preferential vertical alignment during adsorption. Energetic analysis revealed that occurred via physical energies below 7 kJ/mol, alongside exothermic spontaneous behavior, evidenced by calculated internal energy, entropy, enthalpy values. structure demonstrated notable efficiency in applications, achieving percentages 80% 64% considering their average concentrations (24.2 mg/L 12.85 B3+) 1-L volume. These findings highlight an effective sustainable environmental water treatment applications.

Language: Английский

Assessment of Tamarix smyrnensis for Phytoremediation Capacity of Laterite Mine Spoils DOI Creative Commons
Πετρούλα Σερίδου, Vasiliki Karmali, Evdokia Syranidou

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(3), P. 491 - 491

Published: Feb. 6, 2025

The phytoremediation potential of the halophytic plant, Tamarix smyrnensis (T. smyrnensis), was examined in toxic metal spoils assisted by biochar and irrigation air nanobubbles. substrate (spoil) used present study derived from areas close to laterite (Ni-containing ores) mines. efficiency addition two rates (5 t/ha 20 t/ha) improve microbial properties stabilize soil aggregates also examined. Furthermore, effect with air-nanobubble-supplemented water evaluated for remediation spoils. physiological condition plant species investigated terms biomass, height, chlorophyll content, antioxidant enzymes. alkali heavy accumulation their distribution parts were assessed explore whether metals could accumulate root further translocate aboveground tissues. growth T. not adversely affected its cultivation lateritic spoil, highest rate exhibited a beneficial on weight (aerial subterranean biomass). application led significant increases total showing 97.6% increase when is alone 136% combined nanobubble irrigation. Remarkably, only combining nanobubbles low supplementation did translocation tissues occur as factor estimated be greater than unity (TF > 1). bioconcentration factors remained below 1.0 (BCF < 1) across all treatments, demonstrating limited mobilization despite amendments. Finally, increased slightly but substantially uptake metals, which showed decrease compared control groups lower dosage utilized.

Language: Английский

Citations

1
Fabrication and characterisation of Fe 3 O 4 /SBA-16-NH 2 nanocomposite and its applications as a highly efficient adsorbent for removal of boron from wastewater: equilibrium, kinetic and thermodynamic studies DOI

Hassan Neysi,

Farzaneh Marahel,

Alireza Geramizadegan

et al.

International Journal of Environmental & Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 20

Published: March 28, 2025

Language: Английский

Citations

0
Effective and realistic sequestration of Sr2+ and B3+ ions from the aqueous environments using coral reefs based Ca-MCM-41: Gulf of Suez as case study DOI Creative Commons
Alim A. Sayed, Ahmed M. El‐Sherbeeny,

G. Abdelgawad

et al.

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

Published: April 16, 2025

A mesoporous calcium-bearing siliceous framework (Ca-MCM-41) was synthesized using natural coral reef carbonate rocks as precursors. The structural characterization, confirmed through XRD, SEM, FT-IR, and BET analyses, validated the formation of MCM-41 with well-defined properties a high surface area 159.6 m2/g. developed Ca-MCM-41 evaluated potential adsorbent for removal Sr2+ B3+ ions from both aqueous solutions real seawater samples collected Gulf Suez, Egypt. adsorption capacity at saturation reached 285.9 mg/g 86.1 B3+, demonstrating framework's affinity these contaminants. mechanisms were elucidated steric energetic parameters, derived statistical physics-based isotherm models. exhibited higher active site density (148.9 mg/g) compared to (54.8 mg/g), explaining its superior sequestration performance strontium ions. Each receptor capable accommodating up three 2 ions, indicating multi-ionic interaction process preferential vertical alignment during adsorption. Energetic analysis revealed that occurred via physical energies below 7 kJ/mol, alongside exothermic spontaneous behavior, evidenced by calculated internal energy, entropy, enthalpy values. structure demonstrated notable efficiency in applications, achieving percentages 80% 64% considering their average concentrations (24.2 mg/L 12.85 B3+) 1-L volume. These findings highlight an effective sustainable environmental water treatment applications.

Language: Английский

Citations

0