Exploring the intensified catalytic role of biochar in facilitating advanced oxidation of tebuconazole

Jingyu Wang; Trine Norgaard; Vaidotas Kisielius; Nino Wili; Atif Muhmood; Deyong Wang; Pedro N. Carvalho; Niels Christian Nielsen; Shubiao Wu

doi:10.1016/j.cej.2024.155025

Exploring the intensified catalytic role of biochar in facilitating advanced oxidation of tebuconazole

Jingyu Wang, Trine Norgaard, Vaidotas Kisielius, Nino Wili, Atif Muhmood, Deyong Wang, Pedro N. Carvalho, Niels Christian Nielsen, Shubiao Wu^*

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

Abstract

Biochar (pyrolyzed organic material) has been increasingly recognized for its catalytic role in facilitating the advanced oxidation of emerging organic pollutants. However, the inherent catalytic capacity remains highly uncontrollable, leading to considerable uncertainty when scaling up for real-world applications. This study explores the intensified catalytic role of biochar coated with CaO₂ in generating hydroxyl radicals (OH·) and facilitating advanced oxidation of tebuconazole, a prevalent fungicide, tebuconazole was selected as a representative pesticide in agricultural drainage. In addition to evaluating the potential for degradation by advanced oxidation processes (AOPs), the adsorption capabilities of two commercially available biochars, one derived from agricultural waste (ABC) and the other from spruce chips (SBC), as well as their CaO₂-coated derivatives (ABC/CaO₂ and SBC/CaO₂), were also assessed. By taking advantage of the strong adsorption capacity of biochar, and activating AOPs at the adsorption sites by CaO₂, this material enables more efficient and targeted removal of tebuconazole. The results indicate that CaO₂ coating on biochar promoted over tenfold increase in the generation of OH·, resulting in 99% tebuconazole removal within 10 min. Despite a decrease in adsorption capacity of 40–50% resulted by CaO₂ coating, the 10-minutes overall pesticide removal performance was significantly enhanced. The catalytic potential of biochar is closely related to its surface chemical properties, particularly the presence of persistent free radicals which can be regenerated. This research paves a new way for employing CaO₂-enhanced intensified biochar in agricultural mitigation measures.

Original language	English
Article number	155025
Journal	Chemical Engineering Journal
Volume	498
ISSN	1385-8947
DOIs	https://doi.org/10.1016/j.cej.2024.155025
Publication status	Published - 15 Oct 2024

Keywords

Biochar
Persistent free radicals
Pesticide
Reactive oxidation species
Sustainable agriculture

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10.1016/j.cej.2024.155025Licence: CC BY

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@article{e06ca43a0e484c4f8637523339f1fcf6,

title = "Exploring the intensified catalytic role of biochar in facilitating advanced oxidation of tebuconazole",

abstract = "Biochar (pyrolyzed organic material) has been increasingly recognized for its catalytic role in facilitating the advanced oxidation of emerging organic pollutants. However, the inherent catalytic capacity remains highly uncontrollable, leading to considerable uncertainty when scaling up for real-world applications. This study explores the intensified catalytic role of biochar coated with CaO2 in generating hydroxyl radicals (OH·) and facilitating advanced oxidation of tebuconazole, a prevalent fungicide, tebuconazole was selected as a representative pesticide in agricultural drainage. In addition to evaluating the potential for degradation by advanced oxidation processes (AOPs), the adsorption capabilities of two commercially available biochars, one derived from agricultural waste (ABC) and the other from spruce chips (SBC), as well as their CaO2-coated derivatives (ABC/CaO2 and SBC/CaO2), were also assessed. By taking advantage of the strong adsorption capacity of biochar, and activating AOPs at the adsorption sites by CaO2, this material enables more efficient and targeted removal of tebuconazole. The results indicate that CaO2 coating on biochar promoted over tenfold increase in the generation of OH·, resulting in 99% tebuconazole removal within 10 min. Despite a decrease in adsorption capacity of 40–50% resulted by CaO2 coating, the 10-minutes overall pesticide removal performance was significantly enhanced. The catalytic potential of biochar is closely related to its surface chemical properties, particularly the presence of persistent free radicals which can be regenerated. This research paves a new way for employing CaO2-enhanced intensified biochar in agricultural mitigation measures.",

keywords = "Biochar, Persistent free radicals, Pesticide, Reactive oxidation species, Sustainable agriculture",

author = "Jingyu Wang and Trine Norgaard and Vaidotas Kisielius and Nino Wili and Atif Muhmood and Deyong Wang and Carvalho, {Pedro N.} and Nielsen, {Niels Christian} and Shubiao Wu",

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year = "2024",

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day = "15",

doi = "10.1016/j.cej.2024.155025",

language = "English",

volume = "498",

journal = "Chemical Engineering Journal",

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Exploring the intensified catalytic role of biochar in facilitating advanced oxidation of tebuconazole. / Wang, Jingyu ; Norgaard, Trine ; Kisielius, Vaidotas et al.
In: Chemical Engineering Journal, Vol. 498, 155025, 15.10.2024.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Exploring the intensified catalytic role of biochar in facilitating advanced oxidation of tebuconazole

AU - Wang, Jingyu

AU - Norgaard, Trine

AU - Kisielius, Vaidotas

AU - Wili, Nino

AU - Muhmood, Atif

AU - Wang, Deyong

AU - Carvalho, Pedro N.

AU - Nielsen, Niels Christian

AU - Wu, Shubiao

PY - 2024/10/15

Y1 - 2024/10/15

N2 - Biochar (pyrolyzed organic material) has been increasingly recognized for its catalytic role in facilitating the advanced oxidation of emerging organic pollutants. However, the inherent catalytic capacity remains highly uncontrollable, leading to considerable uncertainty when scaling up for real-world applications. This study explores the intensified catalytic role of biochar coated with CaO2 in generating hydroxyl radicals (OH·) and facilitating advanced oxidation of tebuconazole, a prevalent fungicide, tebuconazole was selected as a representative pesticide in agricultural drainage. In addition to evaluating the potential for degradation by advanced oxidation processes (AOPs), the adsorption capabilities of two commercially available biochars, one derived from agricultural waste (ABC) and the other from spruce chips (SBC), as well as their CaO2-coated derivatives (ABC/CaO2 and SBC/CaO2), were also assessed. By taking advantage of the strong adsorption capacity of biochar, and activating AOPs at the adsorption sites by CaO2, this material enables more efficient and targeted removal of tebuconazole. The results indicate that CaO2 coating on biochar promoted over tenfold increase in the generation of OH·, resulting in 99% tebuconazole removal within 10 min. Despite a decrease in adsorption capacity of 40–50% resulted by CaO2 coating, the 10-minutes overall pesticide removal performance was significantly enhanced. The catalytic potential of biochar is closely related to its surface chemical properties, particularly the presence of persistent free radicals which can be regenerated. This research paves a new way for employing CaO2-enhanced intensified biochar in agricultural mitigation measures.

AB - Biochar (pyrolyzed organic material) has been increasingly recognized for its catalytic role in facilitating the advanced oxidation of emerging organic pollutants. However, the inherent catalytic capacity remains highly uncontrollable, leading to considerable uncertainty when scaling up for real-world applications. This study explores the intensified catalytic role of biochar coated with CaO2 in generating hydroxyl radicals (OH·) and facilitating advanced oxidation of tebuconazole, a prevalent fungicide, tebuconazole was selected as a representative pesticide in agricultural drainage. In addition to evaluating the potential for degradation by advanced oxidation processes (AOPs), the adsorption capabilities of two commercially available biochars, one derived from agricultural waste (ABC) and the other from spruce chips (SBC), as well as their CaO2-coated derivatives (ABC/CaO2 and SBC/CaO2), were also assessed. By taking advantage of the strong adsorption capacity of biochar, and activating AOPs at the adsorption sites by CaO2, this material enables more efficient and targeted removal of tebuconazole. The results indicate that CaO2 coating on biochar promoted over tenfold increase in the generation of OH·, resulting in 99% tebuconazole removal within 10 min. Despite a decrease in adsorption capacity of 40–50% resulted by CaO2 coating, the 10-minutes overall pesticide removal performance was significantly enhanced. The catalytic potential of biochar is closely related to its surface chemical properties, particularly the presence of persistent free radicals which can be regenerated. This research paves a new way for employing CaO2-enhanced intensified biochar in agricultural mitigation measures.

KW - Biochar

KW - Persistent free radicals

KW - Pesticide

KW - Reactive oxidation species

KW - Sustainable agriculture

UR - http://www.scopus.com/inward/record.url?scp=85202299233&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2024.155025

DO - 10.1016/j.cej.2024.155025

M3 - Journal article

AN - SCOPUS:85202299233

SN - 1385-8947

VL - 498

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 155025

ER -

Exploring the intensified catalytic role of biochar in facilitating advanced oxidation of tebuconazole

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Keywords

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