TY - JOUR
T1 - Synthesis of chabazite zeolite
T2 - a dual-function material for high-performance carbon capture and para-nitrophenol removal from synthetic wastewater with comprehensive characterization and modeling
AU - Asmaly, Hamza A.
AU - Elbager, Mosaab A.
AU - Ibrahim, Ahmed I.
AU - Nasser, Galal A.
AU - Abdelkreem, Sabri S.E.
AU - Al-Suwaiyan, Mohammad
AU - Elgzoly, Mohammed A.A.
N1 - Publisher Copyright:
© 2025 Elsevier Ltd
PY - 2025/7/1
Y1 - 2025/7/1
N2 - In this study, chabazite (CHA) zeolite was synthesized via an organic structure-directing agent (OSDA)-free hydrothermal method, offering a cost-effective and environmentally friendly alternative to conventional synthesis routes. The characterization confirmed its highly crystalline framework, hierarchical porosity, and thermal stability. The material was employed in a dual application for carbon capture and para-nitrophenol (PNP) removal from synthetic wastewater. CHA exhibited a high CO2 uptake of 7.05 mmol/g at 273 K with strong selectivity over N2, supported by an exothermic heat of adsorption (67.73 vs. 23.51 KJ/mol) and Langmuir isotherm fitting. For PNP removal, response surface methodology (RSM) optimized the process, with an R2 of 0.9681. Kinetics followed a pseudo-second-order model (R2 = 0.8556), and isotherm results aligned with the Freundlich model (R2 = 0.9762), with a maximum adsorption capacity of 334.13 mg/g. These results demonstrate the effectiveness of OSDA-free chabazite as a sustainable adsorbent for combined CO2 capture and wastewater treatment.
AB - In this study, chabazite (CHA) zeolite was synthesized via an organic structure-directing agent (OSDA)-free hydrothermal method, offering a cost-effective and environmentally friendly alternative to conventional synthesis routes. The characterization confirmed its highly crystalline framework, hierarchical porosity, and thermal stability. The material was employed in a dual application for carbon capture and para-nitrophenol (PNP) removal from synthetic wastewater. CHA exhibited a high CO2 uptake of 7.05 mmol/g at 273 K with strong selectivity over N2, supported by an exothermic heat of adsorption (67.73 vs. 23.51 KJ/mol) and Langmuir isotherm fitting. For PNP removal, response surface methodology (RSM) optimized the process, with an R2 of 0.9681. Kinetics followed a pseudo-second-order model (R2 = 0.8556), and isotherm results aligned with the Freundlich model (R2 = 0.9762), with a maximum adsorption capacity of 334.13 mg/g. These results demonstrate the effectiveness of OSDA-free chabazite as a sustainable adsorbent for combined CO2 capture and wastewater treatment.
KW - Carbon capture
KW - Dual function
KW - Para-Nitrophenol
KW - Pourus chabazite
KW - RSM
UR - https://www.scopus.com/pages/publications/105004029740
U2 - 10.1016/j.ces.2025.121736
DO - 10.1016/j.ces.2025.121736
M3 - Article
AN - SCOPUS:105004029740
SN - 0009-2509
VL - 313
JO - Chemical Engineering Science
JF - Chemical Engineering Science
M1 - 121736
ER -
