Green Synthesis of Coal Gangue-Derived NaX Zeolite for Enhanced Adsorption of Cu2+ and CO2

Materials, Journal Year: 2025, Volume and Issue: 18(7), P. 1443 - 1443

Published: March 25, 2025

The accumulation of coal gangue (CG), a byproduct mining, poses severe environmental challenges. This study presents green strategy to convert CG into high-value NaX zeolite via an alkali fusion–hydrothermal method. Through orthogonal experiments, the optimal synthesis conditions (solid–liquid ratio 1:8, crystallization temperature 110 °C, time 12 h) were identified, yielding with exceptional crystallinity (98%), specific surface area (703.5 m2/g), and pore volume (0.28 cm3/g). Comprehensive characterization (XRD, SEM-EDS, BET, etc.) confirmed its structural integrity thermal stability. synthesized exhibited remarkable adsorption capacities for Cu2+ (185.35 mg/g) CO2 (5.51 mmol/g), following Langmuir isotherm model. work not only addresses disposal challenges but also demonstrates cost-effective route producing high-performance adsorbents, aligning circular economy carbon neutrality goals.

Language: Английский

Converting Building Waste Soil into GIS Zeolite to Remediate Cd-Polluted Soil

Published: Jan. 1, 2025

Language: Английский