Adsorption-reduction of Fe(III) by different biochars and their co-activation of H2O2 for oxidation of refractory pollutants

Various biochar samples were used for exploring the Fe(III)/biochar interactions and transformation of reactive oxygen species during co-activation of H2O2. The enhanced •OH production is positively related to the biochars' capacity of reducing Fe(III) into Fe(II), which is then linked with the...

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Main Authors: Mengna Lai, Jianfa Li, Huiming Li, Yao Gui, Jinhong Lü
Format: Article
Language:English
Published: Elsevier 2023-03-01
Series:Catalysis Communications
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1566736723000286
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author Mengna Lai
Jianfa Li
Huiming Li
Yao Gui
Jinhong Lü
author_facet Mengna Lai
Jianfa Li
Huiming Li
Yao Gui
Jinhong Lü
author_sort Mengna Lai
collection DOAJ
description Various biochar samples were used for exploring the Fe(III)/biochar interactions and transformation of reactive oxygen species during co-activation of H2O2. The enhanced •OH production is positively related to the biochars' capacity of reducing Fe(III) into Fe(II), which is then linked with their redox-active moieties and adsorption of Fe(III). Besides the •OH produced sustainably from Fenton reaction between H2O2 and regenerated Fe(II), a novel route involving dissolved O2 is proposed to enhance •OH production in the co-activated system. Consequently, faster and more efficient oxidation of refractory pollutants was achieved by co-activation of H2O2 with Fe(III) and biochar together.
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spelling doaj.art-452d58ddab334ba380e9da8d6205e1062023-03-12T04:20:37ZengElsevierCatalysis Communications1873-39052023-03-01176106626Adsorption-reduction of Fe(III) by different biochars and their co-activation of H2O2 for oxidation of refractory pollutantsMengna Lai0Jianfa Li1Huiming Li2Yao Gui3Jinhong Lü4College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang, 312000, ChinaCorresponding author at: 508 Huancheng West Road, Zhejiang, Shaoxing 312000, China.; College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang, 312000, ChinaCollege of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang, 312000, ChinaCollege of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang, 312000, ChinaCollege of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang, 312000, ChinaVarious biochar samples were used for exploring the Fe(III)/biochar interactions and transformation of reactive oxygen species during co-activation of H2O2. The enhanced •OH production is positively related to the biochars' capacity of reducing Fe(III) into Fe(II), which is then linked with their redox-active moieties and adsorption of Fe(III). Besides the •OH produced sustainably from Fenton reaction between H2O2 and regenerated Fe(II), a novel route involving dissolved O2 is proposed to enhance •OH production in the co-activated system. Consequently, faster and more efficient oxidation of refractory pollutants was achieved by co-activation of H2O2 with Fe(III) and biochar together.http://www.sciencedirect.com/science/article/pii/S1566736723000286BiocharDissolved ironFenton reactionFe(III)/Fe(II) cycleReactive oxygen species
spellingShingle Mengna Lai
Jianfa Li
Huiming Li
Yao Gui
Jinhong Lü
Adsorption-reduction of Fe(III) by different biochars and their co-activation of H2O2 for oxidation of refractory pollutants
Catalysis Communications
Biochar
Dissolved iron
Fenton reaction
Fe(III)/Fe(II) cycle
Reactive oxygen species
title Adsorption-reduction of Fe(III) by different biochars and their co-activation of H2O2 for oxidation of refractory pollutants
title_full Adsorption-reduction of Fe(III) by different biochars and their co-activation of H2O2 for oxidation of refractory pollutants
title_fullStr Adsorption-reduction of Fe(III) by different biochars and their co-activation of H2O2 for oxidation of refractory pollutants
title_full_unstemmed Adsorption-reduction of Fe(III) by different biochars and their co-activation of H2O2 for oxidation of refractory pollutants
title_short Adsorption-reduction of Fe(III) by different biochars and their co-activation of H2O2 for oxidation of refractory pollutants
title_sort adsorption reduction of fe iii by different biochars and their co activation of h2o2 for oxidation of refractory pollutants
topic Biochar
Dissolved iron
Fenton reaction
Fe(III)/Fe(II) cycle
Reactive oxygen species
url http://www.sciencedirect.com/science/article/pii/S1566736723000286
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