Comparative study of the textural characteristics of oil palm shell activated carbon produced by chemical and physical activation for methane adsorption

Arash Arami-Niya, Wan Mohd Ashri Wan Daud, Farouq S. Mjalli

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

The objective of this study is to relate textural and surface characteristics of microporous activated carbon to their methane adsorption capacity. Oil palm shell was used as a raw material for the preparation of pore size controlled activated carbon adsorbents. The chemical treatment was followed by further physical activation with CO2. Samples were treated with CO2 flow at 850°C by varying activation time to achieve different burn-off activated carbon. H3PO4 chemically activated samples under CO2 blanket showed higher activation rates, surface area and micropore volume compared to other activation methods, though this sample did not present high methane adsorption. Moreover, it was shown that using small proportion of ZnCl2 and H3PO4 creates an initial narrow microporosity. Further physical activation grantees better development of pore structure. In terms of pore size distribution the combined preparation method resulted in a better and more homogenous pore size distribution than the conventional physical activation method. Controlling the pore size of activated carbon by this combined activation technique can be utilized for tuning the pore size distribution. It was concluded that the high surface area and micropore volume of activated carbons do not unequivocally determine methane capacities.

Original languageEnglish
Pages (from-to)657-664
Number of pages8
JournalChemical Engineering Research and Design
Volume89
Issue number6
DOIs
Publication statusPublished - Jun 2011

Fingerprint

Palm oil
Methane
Activated carbon
Chemical activation
Adsorption
Pore size
Microporosity
Pore structure
Adsorbents
Raw materials
Tuning

Keywords

  • Activation
  • Methane adsorption
  • Palm shell activated carbon
  • Pore size distribution

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

@article{12cd4a3ea5264e14b7fcf49d43375871,
title = "Comparative study of the textural characteristics of oil palm shell activated carbon produced by chemical and physical activation for methane adsorption",
abstract = "The objective of this study is to relate textural and surface characteristics of microporous activated carbon to their methane adsorption capacity. Oil palm shell was used as a raw material for the preparation of pore size controlled activated carbon adsorbents. The chemical treatment was followed by further physical activation with CO2. Samples were treated with CO2 flow at 850°C by varying activation time to achieve different burn-off activated carbon. H3PO4 chemically activated samples under CO2 blanket showed higher activation rates, surface area and micropore volume compared to other activation methods, though this sample did not present high methane adsorption. Moreover, it was shown that using small proportion of ZnCl2 and H3PO4 creates an initial narrow microporosity. Further physical activation grantees better development of pore structure. In terms of pore size distribution the combined preparation method resulted in a better and more homogenous pore size distribution than the conventional physical activation method. Controlling the pore size of activated carbon by this combined activation technique can be utilized for tuning the pore size distribution. It was concluded that the high surface area and micropore volume of activated carbons do not unequivocally determine methane capacities.",
keywords = "Activation, Methane adsorption, Palm shell activated carbon, Pore size distribution",
author = "Arash Arami-Niya and Daud, {Wan Mohd Ashri Wan} and Mjalli, {Farouq S.}",
year = "2011",
month = "6",
doi = "10.1016/j.cherd.2010.10.003",
language = "English",
volume = "89",
pages = "657--664",
journal = "Chemical Engineering Research and Design",
issn = "0263-8762",
publisher = "Institution of Chemical Engineers",
number = "6",

}

TY - JOUR

T1 - Comparative study of the textural characteristics of oil palm shell activated carbon produced by chemical and physical activation for methane adsorption

AU - Arami-Niya, Arash

AU - Daud, Wan Mohd Ashri Wan

AU - Mjalli, Farouq S.

PY - 2011/6

Y1 - 2011/6

N2 - The objective of this study is to relate textural and surface characteristics of microporous activated carbon to their methane adsorption capacity. Oil palm shell was used as a raw material for the preparation of pore size controlled activated carbon adsorbents. The chemical treatment was followed by further physical activation with CO2. Samples were treated with CO2 flow at 850°C by varying activation time to achieve different burn-off activated carbon. H3PO4 chemically activated samples under CO2 blanket showed higher activation rates, surface area and micropore volume compared to other activation methods, though this sample did not present high methane adsorption. Moreover, it was shown that using small proportion of ZnCl2 and H3PO4 creates an initial narrow microporosity. Further physical activation grantees better development of pore structure. In terms of pore size distribution the combined preparation method resulted in a better and more homogenous pore size distribution than the conventional physical activation method. Controlling the pore size of activated carbon by this combined activation technique can be utilized for tuning the pore size distribution. It was concluded that the high surface area and micropore volume of activated carbons do not unequivocally determine methane capacities.

AB - The objective of this study is to relate textural and surface characteristics of microporous activated carbon to their methane adsorption capacity. Oil palm shell was used as a raw material for the preparation of pore size controlled activated carbon adsorbents. The chemical treatment was followed by further physical activation with CO2. Samples were treated with CO2 flow at 850°C by varying activation time to achieve different burn-off activated carbon. H3PO4 chemically activated samples under CO2 blanket showed higher activation rates, surface area and micropore volume compared to other activation methods, though this sample did not present high methane adsorption. Moreover, it was shown that using small proportion of ZnCl2 and H3PO4 creates an initial narrow microporosity. Further physical activation grantees better development of pore structure. In terms of pore size distribution the combined preparation method resulted in a better and more homogenous pore size distribution than the conventional physical activation method. Controlling the pore size of activated carbon by this combined activation technique can be utilized for tuning the pore size distribution. It was concluded that the high surface area and micropore volume of activated carbons do not unequivocally determine methane capacities.

KW - Activation

KW - Methane adsorption

KW - Palm shell activated carbon

KW - Pore size distribution

UR - http://www.scopus.com/inward/record.url?scp=79956314401&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79956314401&partnerID=8YFLogxK

U2 - 10.1016/j.cherd.2010.10.003

DO - 10.1016/j.cherd.2010.10.003

M3 - Article

VL - 89

SP - 657

EP - 664

JO - Chemical Engineering Research and Design

JF - Chemical Engineering Research and Design

SN - 0263-8762

IS - 6

ER -