AI Article Synopsis
- Researchers created Fe-activated carbon (Fe-AC) from lotus leaf using HNO activation, achieving a maximum adsorption capacity of 45.68 mg/g at specific conditions.
- The adsorption performance of Fe-AC was found to be optimal under neutral pH, showing enhanced selectivity compared to alkaline and acidic conditions.
- Characterization techniques indicated that the modification improved pore volume and surface area while reducing functional groups, which facilitated ion exchange for beryllium adsorption through a spontaneous and endothermic chemical process.
Article Abstract
Lotus leaf was used as raw material to prepare HNO-activated carbon with 1.5:1 (HNO:lotus leaf) (wt:wt) impregnation. Then, the activated carbon was modified by Fe(NO) to obtain Fe-activated carbon (Fe-AC). The adsorption test results show that Fe-AC maximum saturated adsorption capacity (Q) is 45.68 mg/g when the Fe(NO) loading is 5% of the total activated carbon, pH = 6, and the temperature is 35 ℃. The adsorption effect of Fe-AC under neutral conditions is better than that under alkaline and acidic conditions. The modified activated carbon has better adsorption selectivity. The obtained material (Fe-AC) was characterized by N adsorption-desorption isotherm, SEM, FT-IR, BET, XRD, XPS, and pH. The total pore volume, specific surface area, and zero charges of modified activated carbon were increased. The types of modified functional groups were reduced, and the iron reacted with the functional groups, providing ion exchange sites for the adsorption of beryllium. The adsorption thermodynamics showed that the adsorption process was spontaneous and endothermic. The adsorption mechanism of Fe-AC to beryllium is mainly chemical adsorption.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s11356-022-23415-9 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
In vitro performance of a charcoal capturing device with desflurane.
Anesthesiology
March 2025
Professor of Anesthesiology and Perioperative Medicine, Department of Basic and Applied Medical Sciences, Ghent University, Ghent, Belgium; Professor, Department of Anesthesiology, UZLeuven, Leuven, Belgium & Department of Cardiovascular Sciences, KULeuven, Leuven, Belgium; Staff anesthesiologist, Department of Anesthesiology, OLV Hospital, Aalst, Belgium.
Background: The use of capturing devices may become required for the continued use desflurane. We tested the percentage of desflurane captured by a charcoal filter (CONTRAfluran)-workstation (Aisys) combination in vitro.
Methods: Desflurane in O2/air was administered via an Aisys workstation into a 2 L test lung that was insufflated with CO2 (160 mL/min).
Glass-confined carbon dots: transparent afterglow materials with switchable TADF and RTP.
Nanoscale
March 2025
Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
The confined synthesis of carbon dots (CDs) in solid matrixes is a promising avenue for developing new afterglow materials. Benefiting from the advantages of the sol-gel preparation of nanoporous glass, we report transparent glass-confined CDs with tunable afterglow luminescence. Switchable thermally-activated delayed fluorescence (TADF) and room-temperature phosphorescence (RTP) of CDs were achieved by adjusting the sintering temperature and ion doping.
View Article and Find Full Text PDFOptimizing solvent extraction methods for activated carbon-based passive samplers in atmospheric volatile organic compound analysis: minimizing analytical interferences from pretreatment solvents and ensuring quantitative reliability.
Anal Bioanal Chem
March 2025
Department of Environment & Energy, Jeonbuk National University, 567 Baekje-Daero, Deokjin-Gu, Jeonju-Si, Jeonbuk State, 54896, Republic of Korea.
A passive sampler was used to effectively monitor trace volatile organic compound (VOC) concentrations in the atmosphere. VOCs are typically extracted from passive samplers using CS, which is a volatile and hazardous chemical that can leave residues and damage the mass spectrometry (MS) system during gas chromatography (GC)-MS. This study aims to develop and validate alternative solvent extraction methods using acetone, ethanol, n-hexane, and a solution of 99% acetone and 1% CS (ATCS) for VOCs from passive samplers using a standard GC-MS system.
View Article and Find Full Text PDFStudy on Demulsification via Vacuum Filtration with Superamphiphilic Diatomite/G-CN/Rice Husk Charcoal Composite Filter Layer.
Nanomaterials (Basel)
February 2025
School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
The primary extraction way for unconventional oil/gas resources is hydraulic fracturing to alter the reservoir for commercial production. However, hydraulic fracturing technology consumes a large amount of water, and the flowback water can easily be mixed with hydrocarbon substances to form emulsions. To achieve the recycling of water, it is necessary to develop an efficient continuous demulsification method for treating the flowback fluid.
View Article and Find Full Text PDFGlucose uptake is essential for growth in the extracellular space of the murine placenta.
Infect Immun
March 2025
Department of Medical Microbiology and Immunology, School of Medicine, University of California, Davis, California, USA.
infects the placenta of its natural bovine host, which results in abortion and transmission of infection to other cattle and to humans. While the metabolism of during chronic infection of the mononuclear phagocyte system has been studied, the nutrients fueling growth of in the placenta are unknown. We found that in mice, glucose is an important carbon source for in the placenta.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!