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Deciphering the mechanism for encapsulation of MOF (Fe-glutaric acid) onto Se/SnO embedded CMC for effective aqueous sequestration of pharmaceutical pollutant via adsorption.
Environ Monit Assess
January 2025
Department of Botany, Bacha Khan University, Charsadda, Charsadda, 24420, Khyber Pakhtunkhwa, Pakistan.
Wastewater is commonly contaminated with many pharmaceutical pollutants, so an efficient purification method is required for their removal from wastewater. In this regard, an innovative tertiary Se/SnO@CMC/Fe-GA nanocomposite was synthesized through encapsulation of metal organic frameworks (Fe-glutaric acid) onto Se/SnO-embedded-sodium carboxy methyl cellulose matrix to thoroughly evaluate its effectiveness for adsorption of levofloxacin drug from wastewater. The prepared Se/SnO@CMC/Fe-GA nanocomposite was analyzed via UV-Vis spectroscopy, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermo gravimetric analysis (TGA), energy dispersive X-ray (EDX), and X-ray diffraction (XRD) to valuate optical property, size, morphology, thermal stability, and chemical composition.
View Article and Find Full Text PDFPhosphoric acid based geopolymer foam-activated carbon composite for methylene blue adsorption: isotherm, kinetics, thermodynamics, and machine learning studies.
RSC Adv
January 2025
National Centre of Excellence in Physical Chemistry, University of Peshawar Peshawar Pakistan.
In this study, a binary composite adsorbent based on activated carbon and phosphoric acid geopolymer foam (ACP) was prepared by combining phosphoric acid geopolymer (PAGP) with activated carbon (AC) and applied for the removal of methylene blue (MB). Activated carbon was thoroughly mixed with a mixture of fly ash and metakaolin in varying ratios, followed by phosphoric acid activation and thermal curing. The ACP adsorbent was characterized using scanning electron microscope (SEM), Fourier transform infrared (FTIR) spectrophotometer, X-ray diffractometer (XRD), surface area analyser (SAP), and thermogravimetric analyser (TGA).
View Article and Find Full Text PDFTuning multi-scale pore structures in carbonaceous films via direct ink writing and sacrificial templates for efficient indoor formaldehyde removal.
J Hazard Mater
January 2025
Key Laboratory of Coastal Urban Resilient Infrastructures (Ministry of Education), College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China; Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Department of Building Science, Tsinghua University, Beijing 100084, China; State Key Laboratory of Intelligent Geotechnics and Tunnelling, Shenzhen University, Shenzhen 518060, China; State Key Laboratory of Subtropical Building and Urban Science, Shenzhen 518060, China; Key Laboratory of Eco Planning & Green Building (Tsinghua University), Ministry of Education, Beijing 100084, China. Electronic address:
The primary challenges impeding the extensive application of adsorption for indoor air purification have been low efficiency and effective capacity. To fill the research gap, we developed carbonaceous net-like adsorption films featuring multi-scale porous structures for efficient indoor formaldehyde removal. By optimizing the interfacial mass transfer and internal diffusion, we designed macro- to mesoscale meshes on the film surface and micro- to nano-scale pores within the materials, which were achieved by direct-ink-writing (DIW) printing and sacrificial template methods, respectively.
View Article and Find Full Text PDFDegradation mechanism of PGNa by the immobilized degrading enzymes from magnetic fermentation residue biochar.
Sci Total Environ
January 2025
Engineering Research Center of Resource Utilization of Carbon-containing Waste with Carbon Neutrality, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China; State Key Laboratory of Coal Liquification, Gasification and Utilization with High Efficiency and Low Carbon Technology, East China University of Science and Technology, Shanghai 200237, China. Electronic address:
The development of a method to efficiently remove high concentrations of penicillin G sodium (PGNa) from the environment is important for human and animal health and safety. In this study, the degradative enzymes were immobilized by adsorption using biochar from penicillin fermentation waste residue, which could efficiently remove PGNa (900 mg/L) from an aqueous solution, with a removal rate of 99.84 % within 20 min.
View Article and Find Full Text PDFAdsorption capacity and mechanism of modified coal fly ash (CFA) for per- and polyfluoroalkyl substances (PFAS) in landfill leachate.
J Hazard Mater
December 2024
Department of Civil, Architectural and Environmental Engineering, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USA. Electronic address:
Article Synopsis
- * Physiochemical modifications, including treatment with hydrochloric acid and thermal processes, significantly improve CFA's adsorption capabilities, achieving up to 88% removal of organic carbon and demonstrating effective PFAS adsorption.
- * CFA shows a unique adsorption behavior, particularly for longer-chain PFAS, with a cost-effective profile, suggesting it could be a viable alternative to traditional carbon-based methods for treating landfill leachate.
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