Akademik Veri Yönetim Sistemi
Separation and Purification Technology, cilt.379, 2025 (SCI-Expanded, Scopus)
A green-engineered HKUST-1/NiSe nanocomposite was synthesized and immobilized as a uniform thin film on the inner walls of borosilicate glass tubes to create a sustainable, centrifugation-free fixed-bed system for Pb(II) and Cd(II) removal. The composite demonstrated the crystallinity and the clear interfacial interactions derived from both primary components (confirmed by X-ray diffraction spectra (XRD) and fourier transform infrared spectroscopy (FTIR)), a high BET surface area of 450 m2 g−1 with balanced mesoporosity (pore size ≈ 21 Å pore volume 0.088 cm3 g−1), robust thermal stability (minimal mass loss up to ∼ 900 °C by TGA), and a hierarchical morphology confirmed by FE-SEM/EDX with uniform C, O, Cu, Ni, and Se elemental mapping. Under optimized circumstances (pH 8, room temperature), complete removal recovery was attained within 60 s, with maximal adsorption capacities of 1886.8 mg g−1 for Pb(II) and 943.4 mg g−1 for Cd(II), and removal efficiency of 99.6 % and 98.2 %, respectively. Kinetics adhered to a pseudo-second-order model (R2≈ 1.000), whereas isotherms exhibited Langmuir characteristics (R2 ≥ 0.99; RL ≪ 1), signifying advantageous monolayer chemisorption. Thermodynamic parameters (ΔG°<0, ΔH°<0, ΔS°<0) indicated spontaneous, exothermic adsorption accompanied by enhanced interfacial ordering. The device exhibited effective reusability in a closed-loop configuration: nitric acid elution facilitated swift regeneration, achieving over 92 % removal recovery over five cycles for both metal ions; the reutilization of the eluate as feed minimized standards consumption and waste generation. The platform exhibited significant selectivity towards common coexisting ions, operated efficiently across the room temperature, and accomplished over 86 % removal in actual matrices, including tap water, drinking water, municipal wastewater, and industrial wastewater. This proposed zero-waste, fixed-bed method incorporates eco-friendly synthesis, scalable processes, and efficient, high-capacity heavy-metal removal for sustainable water treatment.