Effect of ozone treatment on ammonia removal of activated carbons

Soo Jin Park; Sung Yeol Jin

doi:10.1016/j.jcis.2005.01.043

Effect of ozone treatment on ammonia removal of activated carbons

Soo Jin Park, Sung Yeol Jin

Korea Research Institute of Chemical Technology

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

109 Scopus citations

Abstract

In this work, activated carbons (ACs) were modified by ozone treatment to enhance the efficiency of removal of ammonia gas over the ACs. Surface properties of the ACs were confirmed by X-ray photoelectron spectroscopy (XPS) analysis and N₂ adsorption isotherms at 77 K were investigated by BET and D-A methods to characterize the specific surface area, total pore volume, and micropore volume. The ammonia removal efficiency was confirmed by the gas-detecting tube technique. The results showed that the specific surface area and micropore volume of ACs were slightly destroyed as the ozone treatment time increased. However, the ozone treatment led to an increase in ammonia removal efficiency of ACs, mainly due to an increase of acid functional groups, such as carbonyl and ether groups, on carbon surfaces. It was revealed that the improvement of ammonia removal efficiency of ACs was greatly affected by the interfacial acid-base interactions between modified ACs and basic ammonia adsorbate.

Original language	English
Pages (from-to)	417-419
Number of pages	3
Journal	Journal of Colloid and Interface Science
Volume	286
Issue number	1
DOIs	https://doi.org/10.1016/j.jcis.2005.01.043
State	Published - 1 Jun 2005
Externally published	Yes

Keywords

Activated carbons
Ammonia removal
Oxygen functional groups
Ozone treatment

Access to Document

10.1016/j.jcis.2005.01.043

Cite this

@article{76d0609ab0f840d4aca87f3b2a5f3797,

title = "Effect of ozone treatment on ammonia removal of activated carbons",

abstract = "In this work, activated carbons (ACs) were modified by ozone treatment to enhance the efficiency of removal of ammonia gas over the ACs. Surface properties of the ACs were confirmed by X-ray photoelectron spectroscopy (XPS) analysis and N2 adsorption isotherms at 77 K were investigated by BET and D-A methods to characterize the specific surface area, total pore volume, and micropore volume. The ammonia removal efficiency was confirmed by the gas-detecting tube technique. The results showed that the specific surface area and micropore volume of ACs were slightly destroyed as the ozone treatment time increased. However, the ozone treatment led to an increase in ammonia removal efficiency of ACs, mainly due to an increase of acid functional groups, such as carbonyl and ether groups, on carbon surfaces. It was revealed that the improvement of ammonia removal efficiency of ACs was greatly affected by the interfacial acid-base interactions between modified ACs and basic ammonia adsorbate.",

keywords = "Activated carbons, Ammonia removal, Oxygen functional groups, Ozone treatment",

author = "Park, {Soo Jin} and Jin, {Sung Yeol}",

year = "2005",

month = jun,

day = "1",

doi = "10.1016/j.jcis.2005.01.043",

language = "English",

volume = "286",

pages = "417--419",

journal = "Journal of Colloid and Interface Science",

issn = "0021-9797",

publisher = "Academic Press Inc.",

number = "1",

}

TY - JOUR

T1 - Effect of ozone treatment on ammonia removal of activated carbons

AU - Park, Soo Jin

AU - Jin, Sung Yeol

PY - 2005/6/1

Y1 - 2005/6/1

N2 - In this work, activated carbons (ACs) were modified by ozone treatment to enhance the efficiency of removal of ammonia gas over the ACs. Surface properties of the ACs were confirmed by X-ray photoelectron spectroscopy (XPS) analysis and N2 adsorption isotherms at 77 K were investigated by BET and D-A methods to characterize the specific surface area, total pore volume, and micropore volume. The ammonia removal efficiency was confirmed by the gas-detecting tube technique. The results showed that the specific surface area and micropore volume of ACs were slightly destroyed as the ozone treatment time increased. However, the ozone treatment led to an increase in ammonia removal efficiency of ACs, mainly due to an increase of acid functional groups, such as carbonyl and ether groups, on carbon surfaces. It was revealed that the improvement of ammonia removal efficiency of ACs was greatly affected by the interfacial acid-base interactions between modified ACs and basic ammonia adsorbate.

AB - In this work, activated carbons (ACs) were modified by ozone treatment to enhance the efficiency of removal of ammonia gas over the ACs. Surface properties of the ACs were confirmed by X-ray photoelectron spectroscopy (XPS) analysis and N2 adsorption isotherms at 77 K were investigated by BET and D-A methods to characterize the specific surface area, total pore volume, and micropore volume. The ammonia removal efficiency was confirmed by the gas-detecting tube technique. The results showed that the specific surface area and micropore volume of ACs were slightly destroyed as the ozone treatment time increased. However, the ozone treatment led to an increase in ammonia removal efficiency of ACs, mainly due to an increase of acid functional groups, such as carbonyl and ether groups, on carbon surfaces. It was revealed that the improvement of ammonia removal efficiency of ACs was greatly affected by the interfacial acid-base interactions between modified ACs and basic ammonia adsorbate.

KW - Activated carbons

KW - Ammonia removal

KW - Oxygen functional groups

KW - Ozone treatment

UR - http://www.scopus.com/inward/record.url?scp=17644389548&partnerID=8YFLogxK

U2 - 10.1016/j.jcis.2005.01.043

DO - 10.1016/j.jcis.2005.01.043

M3 - Article

AN - SCOPUS:17644389548

SN - 0021-9797

VL - 286

SP - 417

EP - 419

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

IS - 1

ER -

Effect of ozone treatment on ammonia removal of activated carbons

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this