Total Hydrodechlorination of Industrial Transformer Oil on Metal-Supported Catalysts

Benitez, A.; Angel, G. Del

doi:10.1080/00986440902831888

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…5C and D) which is an indication for hydrodechlorination of the dioxin congeners during hydrogenation. Likewise, as reported by other authors, chlorine can be substituted by hydrogen during a hydrogenation process (Benítez & Del Angel, 2009;Oterhals et al, 2007;Zhang, Chen, Zhang, Ni, & Liang, 2007), which may generate congeners with higher toxicity factors or no toxicity factors depending on the type of congener.…”

Section: Discussionsupporting

confidence: 54%

Understanding possible causes of exceeding dioxin levels in palm oil by-products: An explorative study

et al. 2020

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This article is made publicly available in the institutional repository of Wageningen University and Research, under the terms of article 25fa of the Dutch Copyright Act, also known as the Amendment Taverne. This has been done with explicit consent by the author.Article 25fa states that the author of a short scientific work funded either wholly or partially by Dutch public funds is entitled to make that work publicly available for no consideration following a reasonable period of time after the work was first published, provided that clear reference is made to the source of the first publication of the work.This publication is distributed under The Association of Universities in the Netherlands (VSNU) 'Article 25fa implementation' project. In this project research outputs of researchers employed by Dutch Universities that comply with the legal requirements of Article 25fa of the Dutch Copyright Act are distributed online and free of cost or other barriers in institutional repositories. Research outputs are distributed six months after their first online publication in the original published version and with proper attribution to the source of the original publication.You are permitted to download and use the publication for personal purposes. All rights remain with the author(s) and / or copyright owner(s) of this work. Any use of the publication or parts of it other than authorised under article 25fa of the Dutch Copyright act is prohibited. Wageningen University & Research and the author(s) of this publication shall not be held responsible or liable for any damages resulting from your (re)use of this publication.

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Section: Discussionsupporting

confidence: 54%

Understanding possible causes of exceeding dioxin levels in palm oil by-products: An explorative study

et al. 2020

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“…A novel alternative is to use precious metals that are widely applied for catalyzing hydrodehalogenating reactions with controllable activity and selectivity . Elemental palladium (Pd 0 ) is most studied and has greater catalytic activities in dehalogenation than other precious metals. , Pd 0 -catalyzed reductive defluorination of partially fluorinated arenes, freons, pharmaceuticals, and allylic gem-difluorides is well documented and points to the possibility of using Pd 0 catalysts to treat perfluorinated compounds.…”

Section: Introductionmentioning

confidence: 99%

Adsorption and Reductive Defluorination of Perfluorooctanoic Acid over Palladium Nanoparticles

Long

Donoso

Bhati

et al. 2021

Environ. Sci. Technol.

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Per- and polyfluoroalkyl substances (PFASs) comprise a group of widespread and recalcitrant contaminants that are attracting increasing concern due to their persistence and adverse health effects. This study evaluated removal of one of the most prevalent PFAS, perfluorooctanoic acid (PFOA), in H2-based membrane catalyst-film reactors (H2-MCfRs) coated with palladium nanoparticles (Pd0NPs). Batch tests documented that Pd0NPs catalyzed hydrodefluorination of PFOA to partially fluorinated and nonfluorinated octanoic acids; the first-order rate constant for PFOA removal was 0.030 h–1, and a maximum defluorination rate was 16 μM/h in our bench-scale MCfR. Continuous-flow tests achieved stable long-term depletion of PFOA to below the EPA health advisory level (70 ng/L) for up to 70 days without catalyst loss or deactivation. Two distinct mechanisms for Pd0-based PFOA removal were identified based on insights from experimental results and density functional theory (DFT) calculations: (1) nonreactive chemisorption of PFOA in a perpendicular orientation on empty metallic surface sites and (2) reactive defluorination promoted by physiosorption of PFOA in a parallel orientation above surface sites populated with activated hydrogen atoms (Hads *). Pd0-based catalytic reduction chemistry and continuous-flow treatment may be broadly applicable to the ambient-temperature destruction of other PFAS compounds.

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A catalyzed method to remove polychlorinated biphenyls from contaminated transformer oil

Maghami

Gholipour-Zanjani²,

Khorasheh

et al. 2021

Environ Sci Pollut Res

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Total Hydrodechlorination of Industrial Transformer Oil on Metal-Supported Catalysts

Cited by 5 publications

References 13 publications

Understanding possible causes of exceeding dioxin levels in palm oil by-products: An explorative study

Understanding possible causes of exceeding dioxin levels in palm oil by-products: An explorative study

Adsorption and Reductive Defluorination of Perfluorooctanoic Acid over Palladium Nanoparticles

A catalyzed method to remove polychlorinated biphenyls from contaminated transformer oil

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