Comparative Analysis of Methods of Activated Carbon Surface Area Determination

Authors

  • Stephen Eyije Abechi Ahmadu Bello University, Zaria
  • Casmir Emmanuel Gimba Ahmadu Bello University, Zaria
  • Adamu Uzairu Faculty of Physical Sciences, Ahmadu Bello University, Zaria
  • Odike Jotham Ocholi 2Senior Scientist, Procter and Gamble, Nigeria

Keywords:

Surface Area, nitrogen adsorption, activated carbon, methylene blue

Abstract

Communication in Physical Sciences, 2023, 10(1): 204-212

Authors: Stephen Eyije  Abechi*, Casmir Emmanuel Gimba, Adamu Uzairu and  Odike Jotham  Ocholi

Received:  28 July  2023/Accepted 20 November 2023

This work sought to determine the surface area (SA) of prepared activated carbons from palm kernel shells by two methods and to do a comparative analysis of the results obtained. The methylene blue adsorption test (MBT) gave a surface area in the range of 418 to 544 m2/g for the nine prepared activated carbons labelled A1 to C3. The surface area (SN2) obtained by nitrogen gas adsorption< However, ranged from 17 to 217 m2/g. The surface area obtained for the prepared activated carbons by the MBT decreased in the following order: A1 > A2 > C1 > A3 > B1 > B3 > B2 > C2 > C3, while the BET surface area obtained by nitrogen adsorption for the activated carbons was in the order: A1 > A2 > A3 > C1 > B3 > B1 > B2 > C3 > C2. The order shows a comparable trend and it can be deduced that while the MBT measured the mesopore volume of the activated carbon, the nitrogen gas adsorption measured the micropore volume.  The MBT was therefore in good agreement with the nitrogen gas adsorption method and can therefore provide a cheaper and affordable method to characterize the surface area of activated carbon.

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Author Biographies

Stephen Eyije Abechi, Ahmadu Bello University, Zaria

Department of Chemistry, Faculty of Physical Sciences

Casmir Emmanuel Gimba , Ahmadu Bello University, Zaria

Department of Chemistry, Faculty of Physical Sciences

Adamu Uzairu, Faculty of Physical Sciences, Ahmadu Bello University, Zaria

Department of Chemistry

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Published

2023-11-25

Issue

Vol. 10 No. I (2023): VOLUME 10 ISSUE I

Section

Articles

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