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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