Cerium(IV)-mediated electrochemical oxidation process for removal of polychlorinated dibenzo-p-dioxins and dibenzofurans

Palanisami, Nallasamy; Chung, Sung Pil; Moon, Ilkyeong

doi:10.1016/j.jiec.2014.10.047

Cited by 21 publications

(12 citation statements)

References 30 publications

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“…In such configuration ozone can be used to regenerate the Ce(IV) catalyst [164]. The removal of persistent polychlorinated dibenzo-p-dioxins and dibenzofurans from fly ash by the process in nitric acid was also assessed [165], showing a removal efficiency of 43%. The removal of methylene blue was much more efficient, 95% oxidized by Ce(IV) after 45 min.…”

Section: Destruction Of Organicsmentioning

confidence: 99%

Electrochemical redox processes involving soluble cerium species

Arenas

León

Walsh

2016

Electrochimica Acta

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Anodic oxidation of cerous ions and cathodic reduction of ceric ions, in aqueous acidic solutions, play an important role in electrochemical processes at laboratory and industrial scale. Ceric ions, which have been used for oxidation of organic wastes and off-gases in environmental treatment, are a wellestablished oxidant for indirect organic synthesis and specialised cleaning processes, including oxide film removal from tanks and process pipework in nuclear decontamination. They also provide a classical reagent for chemical analysis in the laboratory. The reversible oxidation of cerous ions is an important reaction in the positive compartment of various redox flow batteries during charge and discharge cycling. A knowledge of the thermodynamics and kinetics of the redox reaction is critical to an understanding of the role of cerium redox species in these applications. Suitable choices of electrode material (metal or ceramic; coated or uncoated), geometry/structure (2-or 3-dimensional) and electrolyte flow conditions (hence an acceptable mass transport rate) are critical to achieving effective electrocatalysis, a high performance and a long lifetime. This review considers the electrochemistry of soluble cerium species and their diverse uses in electrochemical technology, especially for redox flow batteries and mediated electrochemical oxidation.

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Section: Destruction Of Organicsmentioning

confidence: 99%

Electrochemical redox processes involving soluble cerium species

Arenas

León

Walsh

2016

Electrochimica Acta

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“…It is well recognized that the major sources of PCDFs are incineration and thermal decomposition of waste materials involving chlorine as well as natural combustion processes (e.g., volcanic activity). Up to now, many studies have been carried out to gain a better understanding of the formation [1][2][3][4][5][6][7][8] and degradation [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] of PCDFs experimentally and theoretically. Especially, for the degradation of PCDFs, many methods have been proposed, such as microbial degradation, photocatalytic decomposition, and high temperature degradation, etc.…”

Section: Introductionmentioning

confidence: 99%

Theoretical insights into the reaction mechanisms between 2,3,7,8-tetrachlorodibenzofuran and the methylidyne radical

Wei

Feng

et al. 2018

RSC Adv.

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“…Dioxins' chemical inertness makes the removal of these pollutants very challenging in environmental technology (Kulkarni et al 2008). Series of physicochemical processes like photodegradation, thermal remediation, dechlorination with metal catalysts, and dioxin inhibitors such as nitrogen and sulfur compounds in dioxin contaminated waste have been considered for application of dioxin detoxification and degradation (Lin et al 2015;Liu et al 2015;Palanisami et al 2015). However, these technologies are not economically and ecologically reasonable to remedy sizeable areas of polluted soils.…”

Section: Introductionmentioning

confidence: 99%

Aerobic bacterial transformation and biodegradation of dioxins: a review

Saibu

Adebusoye

Oyetibo

2020

Bioresour. Bioprocess.

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Waste generation tends to surge in quantum as the population and living conditions grow. A group of structurally related chemicals of dibenzofurans and dibenzo-p-dioxins including their chlorinated congeners collectively known as dioxins are among the most lethal environmental pollutants formed during different anthropogenic activities. Removal of dioxins from the environment is challenging due to their persistence, recalcitrance to biodegradation, and prevalent nature. Dioxin elimination through the biological approach is considered both economically and environmentally as a better substitute to physicochemical conventional approaches. Bacterial aerobic degradation of these compounds is through two major catabolic routes: lateral and angular dioxygenation pathways. Information on the diversity of bacteria with aerobic dioxin degradation capability has accumulated over the years and efforts have been made to harness this fundamental knowledge to cleanup dioxin-polluted soils. This paper covers the previous decades and recent developments on bacterial diversity and aerobic bacterial transformation, degradation, and bioremediation of dioxins in contaminated systems.

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Cerium(IV)-mediated electrochemical oxidation process for removal of polychlorinated dibenzo-p-dioxins and dibenzofurans

Cited by 21 publications

References 30 publications

Electrochemical redox processes involving soluble cerium species

Electrochemical redox processes involving soluble cerium species

Theoretical insights into the reaction mechanisms between 2,3,7,8-tetrachlorodibenzofuran and the methylidyne radical

Aerobic bacterial transformation and biodegradation of dioxins: a review

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