CH and CH are two common components in shale gas. Adsorption isotherms of CH, CH, and their binary mixtures on shale samples are significant for understanding the fundamental mechanisms of shale gas storage and the recovery of shale resources from shale reservoirs. In this study, the thermogravimetric method is applied to obtain the adsorption isotherms of CH, CH and their binary mixtures on two typical shale core samples. A simplified local density theory/Peng-Robinson equation of state (SLD-PR EOS) model is then applied to calculate the adsorption of CH and CH on shale, and the efficiency of the SLD-PR EOS model is thus evaluated. The results show that CH exhibits a higher adsorption capacity than CH on shale samples, indicating the greater affinity of CH to organic shale. As the molar fraction of CH increases in the CH/CH mixtures, the adsorption capacity of the gas mixtures increases, indicating the preferential adsorption of CH on shale. Based on the predicted results from the SLD-PR EOS model, a reasonable agreement has been achieved with the measured adsorption isotherms of CH and CH, validating the reliability of the SLD-PR EOS model for predicting adsorption isotherms of CH and CH on shale samples. In addition, the SLD-PR EOS model is more accurate in predicting the adsorption of CH on shale than that of CH. This study is expected to inspire a new strategy for predicting the adsorption of hydrocarbons on shale and to provide a basic understanding of competitive adsorption of gas mixtures in shale reservoirs.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9066331 | PMC |
| http://dx.doi.org/10.1039/c9ra01432b | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Performance, isotherm, kinetics and mechanism of simultaneous removal of Cr(VI), Cu(II) and F ions by CeO-MgO binary oxide nanomaterials.
Sci Rep
January 2025
Department of Physics, Faculty of Science, Islamic University of Madinah, Al-Jamia, Madinah, 42351, Saudi Arabia.
This study focuses on the synthesis of a novel Cerium-Magnesium (CeO-MgO) binary oxide nanomaterials by a simple co-precipitation process and used to remove harmful pollutants such as Cr(VI), Cu(II), and F. The morphology, phase, crystallite size, thermal stability, functional groups, surface area, and porosity of the synthesized nanomaterial were determined by using XRD, SEM, FTIR, TGA/DTA, and BET studies. The prepared nanomaterials showed adsorption selectivity of Cu(II) ≈ F> Cr(VI) with a high adsorption capacity of 84.
View Article and Find Full Text PDFImproved activity and stability of cellulase by immobilization on FeO nanoparticles functionalized with Reactive Red 120.
Int J Biol Macromol
January 2025
Faculty of Petroleum and Chemical Engineering, Razi University, Kermanshah, Iran. Electronic address:
Cellulase is extensively used in the biorefinery of cellulosic materials to fermentable sugars in bioethanol production. Application of cellulase in the free form has disadvantages in enzyme wastage and low stability. The results of the present work showed these drawbacks can be solved by cellulase immobilization on functionalized FeO magnetic nanoparticles (MNPs) with reactive red 120 (RR120) as the affinity ligands.
View Article and Find Full Text PDFTowards a better understanding of sorption of persistent and mobile contaminants to activated carbon: Applying data analysis techniques with experimental datasets of limited size.
Water Res
December 2024
Department of Technical Biogeochemistry, Helmholtz Centre for Environmental Research - UFZ, Leipzig 04318, Germany. Electronic address:
The complex sorption mechanisms of carbon adsorbents for the diverse group of persistent, mobile, and potentially toxic contaminants (PMs or PMTs) present significant challenges in understanding and predicting adsorption behavior. While the development of quantitative predictive tools for adsorbent design often relies on extensive training data, there is a notable lack of experimental sorption data for PMs accompanied by detailed sorbent characterization. Rather than focusing on predictive tool development, this study aims to elucidate the underlying mechanisms of sorption by applying data analysis methods to a high-quality dataset.
View Article and Find Full Text PDFEvaluation of anion exchange resin for sorption of selenium (IV) from aqueous solutions.
BMC Chem
January 2025
Nuclear Chemistry Department, Hot Laboratories Center, Egyptian Atomic Energy Authority, P.O. 13759, Cairo, Egypt.
In this work, selenium (IV) ions were adsorbed from aqueous solutions by the strongly basic anion exchange resin Amberlite IRA-400. The morphology of the resin before and after Se(IV) sorption was investigated using different techniques such as energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). To determine the ideal sorption conditions, a batch approach was used to examine the variables affecting Se(IV) sorption performance, including pH, shaking time, adsorbent dosage, initial metal ion concentration, and temperature.
View Article and Find Full Text PDFAzithromycin removal from water via adsorption on drinking water sludge-derived materials: Kinetics and isotherms studies.
PLoS One
January 2025
Grupo de Investigación Materiales con Impacto (Mat&mpac) Universidad de Medellín, Medellín, Colombia.
In this study, we utilized drinking water treatment sludge (WTS) to produce adsorbents through the drying and calcination process. These adsorbents were then evaluated for their ability to remove azithromycin (AZT) from aqueous solutions. The L-500 adsorbent, derived from the calcination (at 500°C) of WTS generated under conditions of low turbidity in the drinking water treatment plant, presented an increase in the specific surface area from 70.
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!