Biomass-derived utilization adsorbent induced by inherent structure of recycled eggplant waste for sustainable removal of heavy metal ion in practical water

Chemical Engineering Science, Год журнала: 2025, Номер unknown, С. 121223 - 121223

Опубликована: Янв. 1, 2025

Язык: Английский

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Arginine-modified surface coffee grounds activated carbon for Pb\(^{2+}\) adsorption: Kinetic, isotherm and thermodynamic studies

Journal of Metals Materials and Minerals, Год журнала: 2025, Номер 35(1), С. e2148 - e2148

Опубликована: Фев. 21, 2025

This research focuses on enhancing the value of coffee waste by converting it into activated carbon for removing Pb²⁺ ions from contaminated water. Coffee grounds were with KOH and carbonized at 600°C 4 h to produce (CGAC), then modified arginine via hydrothermal treatment 120°C 48 create Arg-CGAC. The adsorbents' chemical physical properties analyzed using SEM, FT-IR, BET, pHpzc methods. Batch experiments revealed that Arg-CGAC exhibited superior Pb2+ adsorption (223.10 mg∙g‒1) compared CGAC (119.23 under optimal conditions. Isotherm analysis showed stronger adsorbate-adsorbent interactions a more endothermic demonstrated both physisorption weak chemisorption, while primarily physisorption. Increasing temperatures made ΔG° values negative, indicating favorable Desorption tests 98% yield over four cycles, but efficiency declined after 7th cycle, stabilizing 55% 60%, suggesting good initial performance despite some regeneration limitations.

Язык: Английский

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Application of alkali modified coal gasification slag absorbent for treating lead-contaminated water: Isotherm, kinetic, and mechanism adsorption

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116298 - 116298

Опубликована: Март 1, 2025

Язык: Английский

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Green Synthesis of Fe₃O₄‐Crataegus tanacetifolia (Lam.) Biochar Magnetic Nanocomposites for Adsorption of Naproxen

Chemical Engineering & Technology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 15, 2025

Abstract In this study, naproxen (NPX), one of the emerging contaminants was removed by green synthesizing Fe 3 O 4 coated magnetic biochar nanocomposites ( Ct ‐BMNCs) synthesized from Crataegus tanacetifolia Lam. ) wastes. The characteristics ‐BMNCs examined x‐ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive (EDX), Fourier transform infrared spectroscopy (FTIR), thermogravimetry‐differential thermal analysis (TGA‐DTA), dynamic light scattering (DLS), zetasizer, Brunauer‐Emmett‐Teller (BET) UV–Vis spectroscopy, and pH point zero charge (pH pzc ). With batch adsorption tests, effects (4–11), amount adsorbent (2.5–80 g L −1 ), time, initial concentration (3.125–200 mg thermodynamic performed. Also, kinetic isotherm models error functions were used. Accordingly, average surface 5.68 +11.7 mV, respectively. Moreover, reaction exothermic, most suitable Pseudo‐second‐order Freundlich R 2 :0.999). q max 30.12 mgNPX/g ‐BMNCs. Ct‐BMNCs are quite effective in removing NPX.

Язык: Английский

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Highly efficient Pb(Ⅱ) and Hg(Ⅱ) removal using coal gasification fine slag based functionalized porous silica

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 133162 - 133162

Опубликована: Апрель 1, 2025

Язык: Английский

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Preparation of Amino-Functionalized Carbon Microspheres and Their Adsorption Characteristics for Pb2+ in Aqueous Solutions

Water Air & Soil Pollution, Год журнала: 2025, Номер 236(6)

Опубликована: Апрель 21, 2025

Язык: Английский

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Hybrid Activated Carbon/ Maltodextrin-Functionalized Fibrous Silica for Acetaminophen and Amoxicillin Adsorption: Advanced Statistical Physics Modelling

Environmental Research, Год журнала: 2025, Номер unknown, С. 121691 - 121691

Опубликована: Апрель 1, 2025

Язык: Английский

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Simultaneous removal of lead(II) and cadmium(II) from acidic wastewater by Fe-modified sludge biochar

Desalination and Water Treatment, Год журнала: 2024, Номер 320, С. 100716 - 100716

Опубликована: Авг. 15, 2024

Язык: Английский

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In situ preparation of carbon/zeolite composite materials derived from coal gasification fine slag for removing malachite green: Performance evaluation and mechanism insight

Journal of Water Process Engineering, Год журнала: 2024, Номер 69, С. 106670 - 106670

Опубликована: Дек. 1, 2024

Язык: Английский

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Platinum-based hierarchical activated carbon for methylcyclohexane dehydrogenation in a fixed bed reactor

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 97, С. 1068 - 1076

Опубликована: Дек. 5, 2024

Язык: Английский

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