نتایج جستجو برای: nitrogen isotherm
تعداد نتایج: 124190 فیلتر نتایج به سال:
Phenolic pollutants are very toxic and their removal from aquatic resources is important. Adsorption by activated carbon, AC, the best method for of phenols solutions. However, high cost AC difficulty its regeneration after phenol adsorption puts demand on low price materials. Therefore, sugarcane bagasse as a sustainable, bulky fibrous biomass was selected purpose low-price formation adsorptio...
Three activated carbons (ACs) obtained from wood and either by steam (AC1) or phosphoric acid (AC2, AC3) were characterized via nitrogen adsorption–desorption isotherms, zeta potentials, infrared Raman spectroscopy, as well their chemical analysis was determined. Adsorption experiments with Pemetrexed (PEME), a pharmaceutical used for the treatment of tumors, carried out in which adsorbent dose...
Simultaneous removal of $${\text{Cr}}^{3+}$$ and acidic dye from model tannery wastewater was investigated using local nano-clay modified by 3-chloro-2-hydroxypropyltrimethylammonium chloride surfactant. X-ray fluorescence, Fourier-transform infrared spectroscopy, diffraction, scanning electron microscopy, carbon, hydrogen, nitrogen sulfur analysis, Brunauer–Emmet–Teller analysis pH zero-point ...
In this study, organic amines were used to modify zeolite NaA and analcime synthesized using fly ash iron tailing slag as raw materials, respectively, the adsorption properties of modified zeolites toward CO2 determined. We found that when tetraethylenepentamine (TEPA) was used, had highest nitrogen content. The capacity for 4.02 mmol/g 1.16 temperature 70 °C flow rate 50 mL/min. According isot...
Bernal suggested that clays might have played a significant role in primitive earth through the process of concentration and adsorption of the biologically formed biomonomers and thus protecting them against hydrolytic fission.Adsorption of adenine was studied in presence of montmorillonite clay with or without cations Ca+,Cu+,Mg+.Studies carried out have shown that adsorption of adenine was de...
The purpose of this study is to investigate the capacity of natural Turkish zeolite for NH4-N removal from landfill leachate. The effects of modification and initial concentration on the removal of NH4-N from leachate were also investigated. The kinetics of adsorption of NH4-N has been discussed using three kinetic models, i.e., the pseudo-second order model, the Elovich equation, the intrapart...
The low-affinity interaction between human serum albumin (HSA) and Diclofenac sodium (DCF) was studied using NMR techniques. Both 13C-NMR chemical shift and linewidth show that the dichlorophenyl ring in DCF molecule plays a primary role in its interaction with HSA. Langmuir adsorption isotherm was applied to evaluate the association constant K and the number of binding sites n of the drug/HSA ...
Percus-Yevick theory of correlation functions and nucleation effects in the sticky hard-sphere model
We use the Percus-Yevick approximation to study indirect correlation functions in the sticky hard-sphere model introduced by Baxter. The model has a critical point below which there is a liquid gas transition. We illustrate the changes in the structure of the correlation function as the density increases on the critical isotherm and on supercritical and subcritical isotherms. We also examine th...
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