Mitigation of hazardous toluene via ozone-catalyzed oxidation using MnOx/Sawdust biochar catalyst

Jin Sun Cha; Young Min Kim; Im Hack Lee; Yong Jun Choi; Gwang Hoon Rhee; Hocheol Song; Byong Hun Jeon; Su Shiung Lam; Moonis Ali Khan; Kun Yi Andrew Lin; Wei Hsin Chen; Young Kwon Park

doi:10.1016/j.envpol.2022.119920

Mitigation of hazardous toluene via ozone-catalyzed oxidation using MnOx/Sawdust biochar catalyst

Jin Sun Cha
, Young Min Kim
, Im Hack Lee
, Yong Jun Choi
, Gwang Hoon Rhee
, Hocheol Song
, Byong Hun Jeon
, Su Shiung Lam
, Moonis Ali Khan
, Kun Yi Andrew Lin
, Wei Hsin Chen
, Young Kwon Park

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

20 Scopus citations

Abstract

This study investigated catalytic ozone oxidation using a sawdust char (SDW) catalyst to remove hazardous toluene emitted from the chemical industry. The catalyst properties were analyzed by proximate, ultimate, nitrogen adsorption-desorption isotherms, Fourier-transform infrared, and X-ray photoelectron spectroscopy analyses. In addition, hydrogen-temperature programmed reduction experiments were conducted to analyze the catalyst properties. The specific area and formation of micropores of SDC were improved by applying KOH treatment. MnOx/SDC-K3 exhibited a higher toluene removal efficiency of 89.7% after 100 min than MnOx supported on activated carbon (MnOx/AC) with a removal efficiency of 6.6%. The higher (O_ads (adsorbed oxygen)+O_v(vacancy oxygen))/O_L (lattice oxygen) and Mn³⁺/Mn⁴⁺ ratios of MnOx/SDC-K3 than those of MnOx/AC seemed to be important for the catalytic oxidation of toluene.

Original language	English
Article number	119920
Journal	Environmental Pollution
Volume	312
DOIs	https://doi.org/10.1016/j.envpol.2022.119920
State	Published - 1 Nov 2022

Keywords

Hazardous toluene
KOH activation
MnOx/biochar
Modified biochar
Ozone-catalyzed oxidation

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10.1016/j.envpol.2022.119920

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@article{a949de0b39164ae7afd85ba3b23f0560,

title = "Mitigation of hazardous toluene via ozone-catalyzed oxidation using MnOx/Sawdust biochar catalyst",

abstract = "This study investigated catalytic ozone oxidation using a sawdust char (SDW) catalyst to remove hazardous toluene emitted from the chemical industry. The catalyst properties were analyzed by proximate, ultimate, nitrogen adsorption-desorption isotherms, Fourier-transform infrared, and X-ray photoelectron spectroscopy analyses. In addition, hydrogen-temperature programmed reduction experiments were conducted to analyze the catalyst properties. The specific area and formation of micropores of SDC were improved by applying KOH treatment. MnOx/SDC-K3 exhibited a higher toluene removal efficiency of 89.7\% after 100 min than MnOx supported on activated carbon (MnOx/AC) with a removal efficiency of 6.6\%. The higher (Oads (adsorbed oxygen)+Ov(vacancy oxygen))/OL (lattice oxygen) and Mn3+/Mn4+ ratios of MnOx/SDC-K3 than those of MnOx/AC seemed to be important for the catalytic oxidation of toluene.",

keywords = "Hazardous toluene, KOH activation, MnOx/biochar, Modified biochar, Ozone-catalyzed oxidation",

author = "Cha, \{Jin Sun\} and Kim, \{Young Min\} and Lee, \{Im Hack\} and Choi, \{Yong Jun\} and Rhee, \{Gwang Hoon\} and Hocheol Song and Jeon, \{Byong Hun\} and Lam, \{Su Shiung\} and Khan, \{Moonis Ali\} and \{Andrew Lin\}, \{Kun Yi\} and Chen, \{Wei Hsin\} and Park, \{Young Kwon\}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = nov,

day = "1",

doi = "10.1016/j.envpol.2022.119920",

language = "English",

volume = "312",

journal = "Environmental Pollution",

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TY - JOUR

T1 - Mitigation of hazardous toluene via ozone-catalyzed oxidation using MnOx/Sawdust biochar catalyst

AU - Cha, Jin Sun

AU - Kim, Young Min

AU - Lee, Im Hack

AU - Choi, Yong Jun

AU - Rhee, Gwang Hoon

AU - Song, Hocheol

AU - Jeon, Byong Hun

AU - Lam, Su Shiung

AU - Khan, Moonis Ali

AU - Andrew Lin, Kun Yi

AU - Chen, Wei Hsin

AU - Park, Young Kwon

PY - 2022/11/1

Y1 - 2022/11/1

N2 - This study investigated catalytic ozone oxidation using a sawdust char (SDW) catalyst to remove hazardous toluene emitted from the chemical industry. The catalyst properties were analyzed by proximate, ultimate, nitrogen adsorption-desorption isotherms, Fourier-transform infrared, and X-ray photoelectron spectroscopy analyses. In addition, hydrogen-temperature programmed reduction experiments were conducted to analyze the catalyst properties. The specific area and formation of micropores of SDC were improved by applying KOH treatment. MnOx/SDC-K3 exhibited a higher toluene removal efficiency of 89.7% after 100 min than MnOx supported on activated carbon (MnOx/AC) with a removal efficiency of 6.6%. The higher (Oads (adsorbed oxygen)+Ov(vacancy oxygen))/OL (lattice oxygen) and Mn3+/Mn4+ ratios of MnOx/SDC-K3 than those of MnOx/AC seemed to be important for the catalytic oxidation of toluene.

AB - This study investigated catalytic ozone oxidation using a sawdust char (SDW) catalyst to remove hazardous toluene emitted from the chemical industry. The catalyst properties were analyzed by proximate, ultimate, nitrogen adsorption-desorption isotherms, Fourier-transform infrared, and X-ray photoelectron spectroscopy analyses. In addition, hydrogen-temperature programmed reduction experiments were conducted to analyze the catalyst properties. The specific area and formation of micropores of SDC were improved by applying KOH treatment. MnOx/SDC-K3 exhibited a higher toluene removal efficiency of 89.7% after 100 min than MnOx supported on activated carbon (MnOx/AC) with a removal efficiency of 6.6%. The higher (Oads (adsorbed oxygen)+Ov(vacancy oxygen))/OL (lattice oxygen) and Mn3+/Mn4+ ratios of MnOx/SDC-K3 than those of MnOx/AC seemed to be important for the catalytic oxidation of toluene.

KW - Hazardous toluene

KW - KOH activation

KW - MnOx/biochar

KW - Modified biochar

KW - Ozone-catalyzed oxidation

UR - https://www.scopus.com/pages/publications/85136550616

U2 - 10.1016/j.envpol.2022.119920

DO - 10.1016/j.envpol.2022.119920

M3 - Article

C2 - 35977635

AN - SCOPUS:85136550616

SN - 0269-7491

VL - 312

JO - Environmental Pollution

JF - Environmental Pollution

M1 - 119920

ER -

Mitigation of hazardous toluene via ozone-catalyzed oxidation using MnOx/Sawdust biochar catalyst

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Keywords

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