Preparation of highly microporous carbons from fir wood by KOH activation for adsorption of dyes and phenols from water

Feng Chin Wu; Ru Ling Tseng; Ruey Shin Juang

doi:10.1016/j.seppur.2005.03.013

Preparation of highly microporous carbons from fir wood by KOH activation for adsorption of dyes and phenols from water

Feng Chin Wu^*, Ru Ling Tseng, Ruey Shin Juang

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

176 Scopus citations

Abstract

The carbonaceous adsorbents with controllable pore sizes were prepared from carbonized fir wood (i.e., char) by KOH and steam activation. Pore properties of the carbons including the BET surface area, pore volume, pore size distribution, and pore diameter were characterized from N₂ isotherms. Through varying KOH/char ratio from 0.5 to 6, the KOH-activated carbons exhibited the surface area ranging from 891 to 2794 m² g ^-1 with a fraction of micropore volume of 0.76-0.82. On the other hand, carbons activated by steam at 900 °C for 5 and 7 h had a surface area of 1016 and 1131 m² g^-1 with a fraction of micropore volume of 0.51 and 0.48, respectively. The kinetics of adsorption of methylene blue, basic brown 1, acid blue 74, 2,4-dichlorophenol, 4-chlorophenol, p-cresol, and phenol from water on all the carbons studied were examined to check their chemical characteristics. The effective particle diffusivities within carbon particles were also evaluated.

Original language	English
Pages (from-to)	10-19
Number of pages	10
Journal	Separation and Purification Technology
Volume	47
Issue number	1-2
DOIs	https://doi.org/10.1016/j.seppur.2005.03.013
State	Published - 12 2005
Externally published	Yes

Keywords

Activated carbons
Adsorption kinetics
Fir wood
KOH activation
Physical properties
Steam activation

Access to Document

10.1016/j.seppur.2005.03.013

Cite this

@article{450b2fca857d4de2a711d4cf6f61a1e3,

title = "Preparation of highly microporous carbons from fir wood by KOH activation for adsorption of dyes and phenols from water",

abstract = "The carbonaceous adsorbents with controllable pore sizes were prepared from carbonized fir wood (i.e., char) by KOH and steam activation. Pore properties of the carbons including the BET surface area, pore volume, pore size distribution, and pore diameter were characterized from N2 isotherms. Through varying KOH/char ratio from 0.5 to 6, the KOH-activated carbons exhibited the surface area ranging from 891 to 2794 m2 g -1 with a fraction of micropore volume of 0.76-0.82. On the other hand, carbons activated by steam at 900 °C for 5 and 7 h had a surface area of 1016 and 1131 m2 g-1 with a fraction of micropore volume of 0.51 and 0.48, respectively. The kinetics of adsorption of methylene blue, basic brown 1, acid blue 74, 2,4-dichlorophenol, 4-chlorophenol, p-cresol, and phenol from water on all the carbons studied were examined to check their chemical characteristics. The effective particle diffusivities within carbon particles were also evaluated.",

keywords = "Activated carbons, Adsorption kinetics, Fir wood, KOH activation, Physical properties, Steam activation",

author = "Wu, {Feng Chin} and Tseng, {Ru Ling} and Juang, {Ruey Shin}",

year = "2005",

month = dec,

doi = "10.1016/j.seppur.2005.03.013",

language = "英语",

volume = "47",

pages = "10--19",

journal = "Separation and Purification Technology",

issn = "1383-5866",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Preparation of highly microporous carbons from fir wood by KOH activation for adsorption of dyes and phenols from water

AU - Wu, Feng Chin

AU - Tseng, Ru Ling

AU - Juang, Ruey Shin

PY - 2005/12

Y1 - 2005/12

N2 - The carbonaceous adsorbents with controllable pore sizes were prepared from carbonized fir wood (i.e., char) by KOH and steam activation. Pore properties of the carbons including the BET surface area, pore volume, pore size distribution, and pore diameter were characterized from N2 isotherms. Through varying KOH/char ratio from 0.5 to 6, the KOH-activated carbons exhibited the surface area ranging from 891 to 2794 m2 g -1 with a fraction of micropore volume of 0.76-0.82. On the other hand, carbons activated by steam at 900 °C for 5 and 7 h had a surface area of 1016 and 1131 m2 g-1 with a fraction of micropore volume of 0.51 and 0.48, respectively. The kinetics of adsorption of methylene blue, basic brown 1, acid blue 74, 2,4-dichlorophenol, 4-chlorophenol, p-cresol, and phenol from water on all the carbons studied were examined to check their chemical characteristics. The effective particle diffusivities within carbon particles were also evaluated.

AB - The carbonaceous adsorbents with controllable pore sizes were prepared from carbonized fir wood (i.e., char) by KOH and steam activation. Pore properties of the carbons including the BET surface area, pore volume, pore size distribution, and pore diameter were characterized from N2 isotherms. Through varying KOH/char ratio from 0.5 to 6, the KOH-activated carbons exhibited the surface area ranging from 891 to 2794 m2 g -1 with a fraction of micropore volume of 0.76-0.82. On the other hand, carbons activated by steam at 900 °C for 5 and 7 h had a surface area of 1016 and 1131 m2 g-1 with a fraction of micropore volume of 0.51 and 0.48, respectively. The kinetics of adsorption of methylene blue, basic brown 1, acid blue 74, 2,4-dichlorophenol, 4-chlorophenol, p-cresol, and phenol from water on all the carbons studied were examined to check their chemical characteristics. The effective particle diffusivities within carbon particles were also evaluated.

KW - Activated carbons

KW - Adsorption kinetics

KW - Fir wood

KW - KOH activation

KW - Physical properties

KW - Steam activation

UR - http://www.scopus.com/inward/record.url?scp=27544461897&partnerID=8YFLogxK

U2 - 10.1016/j.seppur.2005.03.013

DO - 10.1016/j.seppur.2005.03.013

M3 - 文章

AN - SCOPUS:27544461897

SN - 1383-5866

VL - 47

SP - 10

EP - 19

JO - Separation and Purification Technology

JF - Separation and Purification Technology

IS - 1-2

ER -

Preparation of highly microporous carbons from fir wood by KOH activation for adsorption of dyes and phenols from water

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this