Adsorption Isotherms and Isosteric Enthalpy of Adsorption for Assorted Refrigerants on Activated Carbons

2012 ◽  
Vol 57 (10) ◽  
pp. 2766-2773 ◽  
Author(s):  
Wai Soong Loh ◽  
Azhar Bin Ismail ◽  
Baojuan Xi ◽  
Kim Choon Ng ◽  
Won Gee Chun
Keyword(s):  
Adsorption Isotherms ◽  
Activated Carbons ◽  
Enthalpy Of Adsorption ◽  
Isosteric Enthalpy Of Adsorption

scholarly journals Computer Analysis of the Porous Structure of Activated Carbons Derived from Various Biomass Materials by Chemical Activation

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4121
Author(s):  
Mirosław Kwiatkowski ◽  
Elżbieta Broniek
Keyword(s):  
Porous Structure ◽  
Adsorption Isotherms ◽  
Computer Analysis ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Adsorbed Layer ◽  
Dry Mass ◽  
Mass Ratio ◽  
Adsorption Volume ◽  
Homogeneous Surface

In this study, the preparation of activated carbons from various materials of biomass origin by activation with potassium hydroxide and a comprehensive computer analysis of their porous structure and adsorption properties based on benzene (C6H6) adsorption isotherms were carried out. In particular, the influence of the mass ratio of the activator’s dry mass to the char mass on the formation of the microporous structure of the obtained activated carbons was analysed. The summary of the analyses carried out based on benzene adsorption isotherms begged the conclusion that activated carbon with a maximum adsorption volume in the first adsorbed layer and homogeneous surface can be obtained from ebony wood at a mass ratio of the activator to the char of R = 3. The obtained results confirmed the superiority of the new numerical-clustering-based adsorption analysis (LBET) method over simple methods of porous structure analysis, such as the Brunauer–Emmett–Teller (BET) and Dubinin–Raduskevich (DR) methods. The LBET method is particularly useful in the evaluation of the influence of the methods and conditions of production of activated carbons on the formation of their porous structure. This method, together with an appropriate economic analysis, can help in the precise selection of methods and conditions for the process of obtaining activated carbons at specific manufacturing costs, and thus makes it possible to obtain materials that can successfully compete with those of other technologies used in industrial practice and everyday life.

Adsorption isotherms of natural gas on activated carbons from banana peel waste and water hyacinth

2017 ◽  
Author(s):  
Nasruddin ◽  
Muhammad Arif Budiyanto ◽  
Anondho Wijanarko ◽  
Osvaldo Sahat ◽  
Ghilandy Ramadhan
Keyword(s):  
Natural Gas ◽  
Adsorption Isotherms ◽  
Water Hyacinth ◽  
Activated Carbons ◽  
Banana Peel

scholarly journals Prediction of Adsorption Isotherms of Organic Compounds from Water on Activated Carbons

1981 ◽  
Vol 54 (9) ◽  
pp. 2819-2820 ◽  
Author(s):  
Ikuo Abe ◽  
Katsumi Hayashi ◽  
Mutsuo Kitagawa
Keyword(s):  
Organic Compounds ◽  
Adsorption Isotherms ◽  
Activated Carbons

Enthalpy of adsorption and adsorption isotherms of polyacrylamide on sea sand

1995 ◽  
Vol 45 (1-2) ◽  
pp. 7-12 ◽  
Author(s):  
Xiang Song ◽  
Jie Ke ◽  
Buxing Han ◽  
Guanying Yang ◽  
Haike Yan
Keyword(s):  
Adsorption Isotherms ◽  
Enthalpy Of Adsorption ◽  
Sea Sand

scholarly journals Surface Characterization and Thermodynamics of Adsorption of Pr, Nd and Er on Alumina from Aqueous Solution

1992 ◽  
Vol 9 (1) ◽  
pp. 17-29 ◽  
Author(s):  
M. Saleem ◽  
M. Afzal ◽  
F. Mahmood ◽  
A. Ali
Keyword(s):  
Aqueous Solution ◽  
Particle Size ◽  
Free Energy ◽  
Adsorption Isotherms ◽  
Surface Characterization ◽  
Average Particle Size ◽  
Average Particle ◽  
Enthalpy Of Adsorption ◽  
Different Temperatures ◽  
Isotherm Equations

The porous nature of alumina has been investigated using various techniques. The values obtained for moisture content, surface area, pore volume, average particle size and porosity were 22%, 116 m2/g, 0.76 cm3/g, 17.0±0.5 μm and 68.0%, respectively. The adsorption isotherms of NdIII, PrIII and ErIII on alumina from aqueous solution have been obtained at different temperatures. All these adsorption isotherms obey the Langmuir, Freundlich and Dubinin-Radushkevich isotherm equations. Thermodynamic parameters such as the free energy, entropy and enthalpy of adsorption have been computed and interpreted. It is noteworthy that the adsorption of PrIII and NdIII increases with decreasing temperature while the reverse is observed for ErIII.

Calculation of Pore Size Distributions of Activated Carbons from Adsorption Isotherms

Langmuir ◽  
1999 ◽  
Vol 15 (23) ◽  
pp. 8235-8245 ◽  
Author(s):  
G. M. Davies ◽  
N. A. Seaton ◽  
V. S. Vassiliadis
Keyword(s):  
Pore Size ◽  
Adsorption Isotherms ◽  
Activated Carbons ◽  
Size Distributions ◽  
Pore Size Distributions
Sign in / Sign up

Export Citation Format

Share Document