Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Injection of CO into a coal mine goaf is the primary method for inhibiting coal spontaneous combustion and for driving outgas, and gases such as N, O, and CH in coal are in competition with it, which in turn affects its adsorption effect in coal. In order to enhance the CO suppression and expulsion effect, the competitive adsorption characteristics of multicomponent gases in the coal mine goaf were investigated. We carried out adsorption experiments with a specific surface area analyzer to clarify the adsorption law of coal on different gases, conducted CO adsorption experiments with an in situ infrared device to reveal the role of functional groups, verified the single-component adsorption law with molecular dynamics simulation, elucidated the effect of temperature on the adsorption of multicomponent gases, and summarized the law of CO competition under different pressures. The results showed that the degree of deterioration was negatively correlated with the adsorption capacity, which was N < O < CH ≪ CO, and the functional group C=O promoted the adsorption of CO. N and O adsorption produced only van der Waals force, and CH and CO promoted electrostatic force, to which CO had an obvious advantage of electrostatic potential. In the competition adsorption process, CO produces the highest heat of adsorption, and the temperature increase affects the ability to positively correlate with the adsorption capacity of the adsorbate. The adsorption point of carbon dioxide is concentrated near the side branched chain, with better substitution of O at = 1 MPa, while CH is mainly rejected at = 2 MPa. The advantages of injecting CO as an inert gas into the air-mining zone were elucidated in terms of functional groups, intermolecular forces, heat of adsorption, and adsorption sites, which provide theoretical support for the suppression of coal spontaneous combustion by replacing O and the enhancement of extraction by replacing CH.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12059907 | PMC |
| http://dx.doi.org/10.1021/acsomega.5c01435 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Challenges in the use of the CytoSorb adsorber in an intensive care patient with liver dysfunction of unknown origin: a case report.
J Med Case Rep
September 2025
Department of Anesthesiology, LMU University Hospital Munich LMU, Marchioninistrasse 15, 81377, Munich, Germany.
Background: The treatment of critically ill patients in intensive care units is becoming increasingly complex. For example, organ transplants are regularly carried out, the recipients are seriously ill, and the postoperative course can be complicated. This is why organ replacement and hemadsorption procedures are becoming increasingly important.
View Article and Find Full Text PDFcomprehensive review of ciprofloxacin pollution in water: sources, environmental impacts, remediation techniques, and research challenges.
Environ Monit Assess
September 2025
School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia.
Ciprofloxacin (CIP), a widely used fluoroquinolone antibiotic, has become a significant contaminant in aquatic environments due to its extensive use and incomplete metabolism. This review comprehensively analyses CIP pollution, including its sources, environmental and health impacts, and removal strategies. Chemical methods such as advanced oxidation processes and physical techniques like adsorption are evaluated for their efficiency in CIP removal.
View Article and Find Full Text PDFSequestration, recovery, and reuse of cationic, anionic, and non-ionic dyes using bentonite.
Environ Sci Pollut Res Int
September 2025
Department of Dyes and Chemical Engineering, Bangladesh University of Textiles, Dhaka, Bangladesh.
This study quantitatively evaluated the adsorption performance of natural bentonite for removing three dye classes-cationic (Basic dye: BEZACRYL RED GRL), anionic (Reactive dye: AVITERA LIGHT RED SE), and non-ionic (Disperse dye: BEMACRON BLUE HP3R) from synthetic textile wastewater. Batch adsorption experiments were conducted under varying conditions of contact time (15-90 min), adsorbent dosage (20-60 g L⁻), pH (4 and 12), and temperature (25-100 °C), with dye concentrations quantified by UV-Vis spectroscopy. At a contact time of 30 min and room temperature (25 °C), maximum removal efficiencies reached 99.
View Article and Find Full Text PDFRemoval of cadmium from aqueous solution using montmorillonite-supported nanoscale zero-valent iron.
Environ Monit Assess
September 2025
School of Geological Survey, China University of Geosciences, Wuhan, 430074, China.
Cadmium (Cd) contamination in water poses a critical global challenge. A novel nanocomposite, montmorillonite (Mt)-supported nanoscale zero-valent iron (Mt-nZVI), synthesized by liquid phase reduction, offers a promising method for effectively removing Cd. The material underwent characterization through various techniques, including X-ray diffraction (XRD) and Scanning Electron Microscope(SEM).
View Article and Find Full Text PDFGSH and Halides Directed Controllable Synthesis of Chiral Gold Nanostars for Sensitive Diagnosis of Nephritis Types Using SERS and Transformer Neural Network.
Anal Chem
September 2025
Institute of Digitized Medicine and Intelligent Technology, Wenzhou Medical University, Wenzhou 325000, P. R. China.
Surface-enhanced Raman spectroscopy (SERS) has shown potential for early disease diagnosis via urinary metabolomics, but still faces challenges in achieving stable hot spots and processing complex clinical data. In this study, the preparation of chiral gold nanostars with precisely controllable branch size, number, and sharpness was realized by investigating the effects of l-GSH and CTA ( indicates halides) on site occupancy, reduction rate, and selective adsorption on crystal facets. Raman spectroscopic characterization using rhodamine 6G (R6G) as a reporter molecule revealed that nanoparticles with fewer branches, larger branch bases, and smoother surfaces exhibited excellent SERS activity, with an analytical enhancement factor (AEF) of 5.
View Article and Find Full Text PDF