Adsorption equilibrium isotherms and thermodynamic analysis of CH4, CO2, CO, N2 and H2 on NaY Zeolite

Adsorption ◽  
2020 ◽  
Vol 26 (7) ◽  
pp. 1101-1111 ◽  
Author(s):  
Li Feng ◽  
Yuanhui Shen ◽  
Tongbo Wu ◽  
Bing Liu ◽  
Donghui Zhang ◽  
...  
Keyword(s):  
Thermodynamic Analysis ◽  
Adsorption Equilibrium ◽  
Nay Zeolite ◽  
Equilibrium Isotherms

scholarly journals Adsorption Equilibrium of 1, 1-Dichloro-1-fluoroethane (HCFC-141b) on a Hydrophobic Zeolite

1998 ◽  
Vol 16 (2) ◽  
pp. 67-75 ◽  
Author(s):  
Wen-Tien Tsai ◽  
Ching-Yuan Chang ◽  
Chih-Yin Ho
Keyword(s):  
Experimental Data ◽  
Free Energy ◽  
Thermodynamic Properties ◽  
Adsorption Isotherms ◽  
Ozone Depletion ◽  
Adsorption Equilibrium ◽  
Stratospheric Ozone ◽  
Stratospheric Ozone Depletion ◽  
Equilibrium Isotherms ◽  
Entropy Of Adsorption

Of the major replacements for chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) are now accepted as being prime contributors to stratospheric ozone depletion. As a consequence, the development of adsorbents capable of adsorbing and recovering specific HCFCs has received great attention. This paper describes an investigation of the adsorption equilibrium of 1, 1-dichloro-1-fluoroethane (HCFC-141b) vapour on a commercial hydrophobic zeolite. The corresponding Henry, Freundlich and Dubinin–Radushkevich (D–R) equilibrium isotherms have been determined and found to correlate well with the experimental data. Based on the Henry adsorption isotherms obtained at 283, 303 and 313 K. thermodynamic properties such as the enthalpy, free energy and entropy of adsorption have been computed for the adsorption of HCFC-141b vapour on the adsorbent. The results obtained could be useful in the application of HCFC adsorption on the hydrophobic zeolite studied.

Adsorption of Acid Red by Porous Chitosan Film

2013 ◽  
Vol 690-693 ◽  
pp. 1184-1187 ◽  
Author(s):  
Tao Feng ◽  
Lei Xu ◽  
Fan Zhang
Keyword(s):  
Contact Time ◽  
Adsorption Equilibrium ◽  
Chitosan Film ◽  
Langmuir Equation ◽  
Equilibrium Isotherms ◽  
Environmental Application ◽  
Batch System ◽  
Porous Chitosan ◽  
Chitosan Films ◽  
Scanning Electron

The preparation, characterization, and environmental application of crosslinked porous chitosan films for Acid red (AR) adsorption have been investigated. The adsorbent was characterized by scanning electron microscope (SEM). The adsorption experiments were carried out in a batch system to optimize operation variables: contact time, Acid red concentration, temperature, and pH. The results indicated crosslinked porous chitosan films could successfully remove 96% of Acid red. The adsorption equilibrium isotherms showed that the sorption processes were better fitted by Langmuir equation.

Effective Adsorption Equilibrium Isotherms and Breakthroughs of Water Vapor and Carbon Dioxide on Different Adsorbents

2011 ◽  
Vol 50 (17) ◽  
pp. 10201-10210 ◽  
Author(s):  
Daniel Ferreira ◽  
Roberto Magalhães ◽  
Pedro Taveira ◽  
Adélio Mendes
Keyword(s):  
Carbon Dioxide ◽  
Water Vapor ◽  
Adsorption Equilibrium ◽  
Equilibrium Isotherms

scholarly journals Uranium (VI) adsorption equilibrium on purolite resin SGA 600 U/3472

2014 ◽  
Vol 12 (7) ◽  
pp. 769-773 ◽  
Author(s):  
Adriana Botez ◽  
Tanase Dobre ◽  
Eugenia Panturu ◽  
Antoaneta Filcenco-Olteanu
Keyword(s):  
Adsorption Capacity ◽  
Adsorption Equilibrium ◽  
Negative Impact ◽  
Fixed Bed ◽  
Continuous System ◽  
Equilibrium Isotherms ◽  
Ion Content ◽  
Uranium Adsorption ◽  
Industrial Processing ◽  
Adsorption Desorption

AbstractThis paper characterizes uranium (VI) sorption from synthetic solutions using a fixed bed Purolite resin SGA 600 U/3472 system. The effect of the sulphate anion presence in the liquid phase on sorbtion dynamics and equilibrium is analysed. In the industrial processing of solutions obtained from leaching of uranium ore (alkaline/acid), in a continuous system, there are several compounds which strongly compete with uranium for ion exchange sites and consequently these substances depress the uranium adsorption. The influence of vanadate, molybdate, chloride, and nitrate is known, therefore, in this paper, the adsorption equilibrium isotherms for uranium (VI) are obtained for different sulphate ion concentrations in solution. The adsorption capacity variation of the Purolite resin SGA 600U/3472 with the number of adsorption/desorption cycles is also studied. The experimental results reveal the negative impact of high sulphate ion content in solution on the adsorption capacity of the resin Purolite SG 600 U / 3472 with uranium (VI) and therefore it is considered one of the compounds which strongly affect the uranium adsorption.

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