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      The investigation of activated carbon by K2CO3 activation: Micropores- and macropores-dominated structure

      , , , , , ,
      Chemosphere
      Elsevier BV

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          Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report)

          Gas adsorption is an important tool for the characterisation of porous solids and fine powders. Major advances in recent years have made it necessary to update the 1985 IUPAC manual on Reporting Physisorption Data for Gas/Solid Systems. The aims of the present document are to clarify and standardise the presentation, nomenclature and methodology associated with the application of physisorption for surface area assessment and pore size analysis and to draw attention to remaining problems in the interpretation of physisorption data.
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            Recommendations for the characterization of porous solids (Technical Report)

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              Adsorption of methylene blue onto bamboo-based activated carbon: kinetics and equilibrium studies.

              Bamboo, an abundant and inexpensive natural resource in Malaysia was used to prepare activated carbon by physiochemical activation with potassium hydroxide (KOH) and carbon dioxide (CO(2)) as the activating agents at 850 degrees C for 2h. The adsorption equilibrium and kinetics of methylene blue dye on such carbon were then examined at 30 degrees C. Adsorption isotherm of the methylene blue (MB) on the activated carbon was determined and correlated with common isotherm equations. The equilibrium data for methylene blue adsorption well fitted to the Langmuir equation, with maximum monolayer adsorption capacity of 454.2mg/g. Two simplified kinetic models including pseudo-first-order and pseudo-second-order equation were selected to follow the adsorption processes. The adsorption of methylene blue could be best described by the pseudo-second-order equation. The kinetic parameters of this best-fit model were calculated and discussed.
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                Author and article information

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                Journal
                Chemosphere
                Chemosphere
                Elsevier BV
                00456535
                July 2022
                July 2022
                : 299
                : 134365
                Article
                10.1016/j.chemosphere.2022.134365
                89bbbee2-57d5-4a77-8118-c3ef271396a4
                © 2022

                https://www.elsevier.com/tdm/userlicense/1.0/

                http://www.elsevier.com/open-access/userlicense/1.0/


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