Identification of by-products and toxicity assessment in aqueous-phase hydrodechlorination of diuron with palladium on activated carbon catalysts

Bahri, M. Al; Calvo, L.; Polo, A.M.; Gilarranz, Miguel Á.; Mohedano, A.F.; Rodrı́guez, Juan J.

doi:10.1016/j.chemosphere.2013.02.065

Cited by 14 publications

(4 citation statements)

References 34 publications

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“…In addition to metal phase, the support plays an important role in both catalytic activity and stability of the catalyst. Silica, alumina and active carbons [10][11][12] are used as the most popular supports for dispersed metal phase. Very interesting, but still not very widely heldmaterialsare the zeolites, especially in hydrodechlorination ofC 2 chlorocarbonsin aqueous phase [13][14][15][16][17][18].However, nickelcontaining dealuminatedzeolite BEA was found to beactive and stable catalystin HDC of 1,2-dichloroethane and trichloroethylene with very high selectivity toward value added products (unsaturated hydrocarbons).…”

Section: Introductionmentioning

confidence: 99%

Catalytic removal of trichloroethylene from water over palladium loaded microporous and hierarchical zeolites

Śrębowata

Tarach

Girman

et al. 2016

Applied Catalysis B: Environmental

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Section: Introductionmentioning

confidence: 99%

Catalytic removal of trichloroethylene from water over palladium loaded microporous and hierarchical zeolites

Śrębowata

Tarach

Girman

et al. 2016

Applied Catalysis B: Environmental

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“…The use of grape seeds for the preparation of adsorbents or catalytic supports appears very interesting owing to their granular morphology and their ready availability from winery works [2,6,7]. Satisfactory results have been obtained when this material has been used as adsorbent for the removal of diuron [7] or support of Pd catalyst in the hydrodechlorination of diuron [8] and in nitrate reduction [9]. Advanced oxidation processes (AOPs) have the capability to remove refractory or nonbiodegradable pollutants operating at mild conditions [10,11].…”

Section: Introductionmentioning

confidence: 99%

CWPO of bisphenol A with iron catalysts supported on microporous carbons from grape seeds activation

Mena

Díaz

Rodrı́guez

et al. 2017

Chemical Engineering Journal

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The catalytic wet peroxide oxidation (CWPO) of bisphenol A (BPA) with Fe catalysts supported on activated carbon from grape seeds (GS) has been studied. The GS were pyrolized (N 2 , 600 ºC, 2 h) and subjected to activation upon partial gasification with air (400 ºC, 2 h).Oxidized samples of the char and activated carbon were also obtained upon treatment with HNO 3 . The Fe catalysts were prepared by incipient wetness impregnation with ferric nitrate solution. They showed narrow microporosity, with surface area values ≈ 350-500 m 2 g -1 and total iron contents between 2.8-4.2 % wt. The CWPO experiments were carried out at 50-80 ºC.The best catalyst allowed complete conversion of BPA (100 mg L -1 ) and a 60 % TOC reduction in 3 h reaction time at 80 ºC and the theoretical stoichiometric amount of H 2 O 2 (530 mg L -1 ).The ecotoxicity of the effluent was negligible and the biodegradability was highly improved. In a long-term experiment (100 h), the catalyst suffered a loss of activity upon the early stages on stream (≈15 h), where about 20% of Fe was lost, followed by a highly stable behavior for the rest of the experiment.

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“…In this process, a suitable amount of catalysts and carriers are used to absorb and dissociate hydrogen under ordinary pressure, and then, reactive hydrogen obtained is used to degrade and remove chlorines in the dioxins. Finally dioxins can be detoxified without toxic intermediate products [97][98][99]. Supported noble metals, such as Pd, Pt, and Rh, are the most common catalysts, which possess strong capability for adsorption and dissociation of H 2 [100,101].…”

Section: Catalytic Hydro-dechlorination (Chd)mentioning

confidence: 99%

Characteristics and Treatment Methods of Medical Waste Incinerator Fly Ash: A Review

et al. 2018

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Medical waste incinerator fly ash (MWIFA) is quite different from municipal solid waste incinerator fly ash (MSWIFA) due to its special characteristics of high levels of chlorines, dioxins, carbon constituents, and heavy metals, which may cause irreversible harm to environment and human beings if managed improperly. However, treatment of MWIFA has rarely been specifically mentioned. In this review, various treatment techniques for MSWIFA, and their merits, demerits, applicability, and limitations for MWIFA are reviewed. Natural properties of MWIFA including the high contents of chlorine and carbonaceous matter that might affect the treatment effects of MWIFA are also depicted. Finally, several commendatory and feasible technologies such as roasting, residual carbon melting, the mechanochemical technique, flotation, and microwave treatment are recommended after an overall consideration of the special characteristics of MWIFA, balancing environmental, technological, economical information.

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Identification of by-products and toxicity assessment in aqueous-phase hydrodechlorination of diuron with palladium on activated carbon catalysts

Cited by 14 publications

References 34 publications

Catalytic removal of trichloroethylene from water over palladium loaded microporous and hierarchical zeolites

Catalytic removal of trichloroethylene from water over palladium loaded microporous and hierarchical zeolites

CWPO of bisphenol A with iron catalysts supported on microporous carbons from grape seeds activation

Characteristics and Treatment Methods of Medical Waste Incinerator Fly Ash: A Review

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