Adsorption characteristics of methane on Maxsorb III by gravimetric method

Thu Kyaw, Young Deuk Kim, Azhar Bin Ismil, Bidyut Baran Saha, Kim Choon Ng

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Adsorption characteristics of CH4 on the carbonaceous porous material is evaluated for possible application in adsorbed natural gas (ANG) system. Adsorption uptakes at assorted temperatures (25-80 °C) and pressures ranging from ambient to relatively high pressure i.e., 8.0 MPa are experimentally investigated. Surface characteristics such as pore surface area, micropore volume and pore size distribution of the adsorbent (Maxsorb III) are first evaluated using Classical Volumetric Method i.e., the manometric method with N2 gas adsorption at 77 K. The sorption measurements for methane, CH4 gas are carried out by thermogravimetric (TGA) method using magnetic suspension balance coupled with the automatic dosing system. The buoyancy measurements were first conducted using Helium gas as adsorbate. Buoyancy correction is applied to all sets of measured data and the specific uptake capacities (g/g of adsorbent) at various temperatures and pressures were calculated. The isotherm data were then fitted using Langmuir and Tòth isotherm models. It is observed that the data can be satisfactorily fitted using Tòth model with excellent fitting accuracy around 2.2% within the experimental range. The outcome of the present study especially the adsorption data at high pressures is applicable to accurate design and modeling of Adsorbed Natural Gas (ANG) systems.

Original languageEnglish
Pages (from-to)200-205
Number of pages6
JournalApplied Thermal Engineering
Volume72
Issue number2
DOIs
Publication statusPublished - Nov 22 2014

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Methane
Adsorption
Buoyancy
Adsorbents
Isotherms
Natural gas
Gas adsorption
Adsorbates
Gases
Pore size
Helium
Porous materials
Sorption
Temperature

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

Cite this

Adsorption characteristics of methane on Maxsorb III by gravimetric method. / Kyaw, Thu; Kim, Young Deuk; Ismil, Azhar Bin; Saha, Bidyut Baran; Ng, Kim Choon.

In: Applied Thermal Engineering, Vol. 72, No. 2, 22.11.2014, p. 200-205.

Research output: Contribution to journalArticle

Kyaw, Thu ; Kim, Young Deuk ; Ismil, Azhar Bin ; Saha, Bidyut Baran ; Ng, Kim Choon. / Adsorption characteristics of methane on Maxsorb III by gravimetric method. In: Applied Thermal Engineering. 2014 ; Vol. 72, No. 2. pp. 200-205.
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