Pressurized photo-reactor for the degradation of the scarcely biodegradable DPC cationic surfactant in water

Pirola, Carlo; Bianchi, Claudia L.; Gatto, S.; Ardizzone, S.; Cappelletti, G.

doi:10.1016/j.cej.2013.03.116

Cited by 10 publications

(9 citation statements)

References 33 publications

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“…The innovative photoreactor has been described elsewhere 25,26 . Briefly, the photoreactor (Soffieria Sestese Company, Sesto San Giovanni, Italy), was made of AISI 316 stainless steel.…”

Section: -Photocatalytic Co2 Reductionmentioning

confidence: 99%

“…To answer some of the criticisms outlined in the introduction, we developed a new concept of photoreactor, proposed by our group for the first time in this application 25 . It is represented by a device working under high pressure (up to 20 bar), in order to improve CO2 solubility in a liquid solvent even at relatively high temperature.…”

Section: -Photoreduction Of Co2mentioning

confidence: 99%

“…In our preliminary report 25 , we underlined the effect of operating conditions on photocatalytic activity. In particular, we evidenced a parallel reaction pathway, leading to the formation of liquid phase products (mainly methanol, ethanol, formic acid and formaldehyde) and methane evolving in gas phase.…”

Section: -Photoreduction Of Co2mentioning

confidence: 99%

“…The proportions of products formation rates in liquid or gas phase were very dependent on temperature and pressure 25 . An increase of operating pressure favoured liquid organic products accumulation and was detrimental for H2 and CH4 productivities.…”

Section: -Photoreduction Of Co2mentioning

confidence: 99%

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CO₂ photoconversion to fuels under high pressure: effect of TiO₂ phase and of unconventional reaction conditions

Rossetti

Villa

Compagnoni

et al. 2015

Catal. Sci. Technol.

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Artificial photosynthesis is an up to date topic for the fixation of CO2 in form of valuable fuels. Recently, we set up an innovative concept of photoreactor to be applied to CO2 photoreduction, enabling operation up to 20 bar. This allows to improve CO2 solubility and to explore unconventional operating conditions for this very challenging reaction.Following a preliminary communication, to demonstrate the validity of the approach systematic testing has been here carried out on different TiO2 photocatalysts (anatase, rutile and anatase+rutile) doped with 0.1 wt% Au, by tuning pressure, temperature and pH.The operating conditions have been selected to maximise the production of gas phase products, i.e. CH4 + H2, with respect to liquid phase organic compounds. The present results overperform many of the recent achievements reported in the literature and throw the basis for a further optimisation of the photocatalytic material and of the photoreactor.

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“…The innovative photoreactor has been described elsewhere 25,26 . Briefly, the photoreactor (Soffieria Sestese Company, Sesto San Giovanni, Italy), was made of AISI 316 stainless steel.…”

Section: -Photocatalytic Co2 Reductionmentioning

confidence: 99%

Section: -Photoreduction Of Co2mentioning

confidence: 99%

Section: -Photoreduction Of Co2mentioning

confidence: 99%

Section: -Photoreduction Of Co2mentioning

confidence: 99%

See 2 more Smart Citations

CO₂ photoconversion to fuels under high pressure: effect of TiO₂ phase and of unconventional reaction conditions

Rossetti

Villa

Compagnoni

et al. 2015

Catal. Sci. Technol.

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“…Due to the rapid pace of global industrialization, the contamination of water resources has largely occurred [1][2][3]. Specifically, organic dyes are used in a wide range of industries, such as textiles, dying, leather, paper and they are one of the main water pollutants with severe environmental impact [4,5].…”

Section: Introductionmentioning

confidence: 99%

A detailed investigation of MnO2 nanorods to be grown onto activated carbon. High efficiency towards aqueous methyl orange adsorption/degradation

Pargoletti

Pifferi

Falciola

et al. 2019

Applied Surface Science

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Herein, we report a one-pot wet chemical method adopted to synthesize ad hoc MnO 2 nanoparticles. By varying both the manganese salt precursors (e.g. sulphate or chloride) and the oxidizing agents (e.g. ammonium persulphate, potassium permanganate or potassium bromate), we succeeded in tailoring MnO 2 structural, morphological and surface features. Hence, owing to nanopowders peculiar properties, they were exploited as adsorbents for aqueous Methyl Orange (MO) removal. Particularly, novel MnO 2 nanorods (from manganese sulphate and potassium bromate, namely MS_Br) showed the highest removal efficiency probably due to both its polymorphic composition and its highest percentage of pores with diameter under 20 nm. Then, this powder was grown on Activated Carbon (AC40, sample MS_Br@AC40) pellets to either enhance its adsorption properties or to facilitate the adsorbent removal at the end of the kinetic test. Novel MS_Br@AC40 shows superior MO removal capabilities, achieving the almost total pollutant disappearance, thanks to the synergistic adsorption/oxidation features between carbon (high surface area, i.e. 1200 m 2 g À1) and MnO 2. By means of HPLC-MS on eluates, we also managed to investigate MS_Br and MS_Br@AC40 degradative power towards MO molecules, thus leading to a novel degradation pathway. Finally, the adsorbent regeneration capability has been evaluated, showing very promising results.

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Dodecylpyridinium chloride removal by persulfate activation using UVA radiation or temperature: experimental design and kinetic modeling

Nunes

Metolina

Teixeira

2021

Environ Sci Pollut Res

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Pressurized photo-reactor for the degradation of the scarcely biodegradable DPC cationic surfactant in water

Cited by 10 publications

References 33 publications

CO₂ photoconversion to fuels under high pressure: effect of TiO₂ phase and of unconventional reaction conditions

CO₂ photoconversion to fuels under high pressure: effect of TiO₂ phase and of unconventional reaction conditions

A detailed investigation of MnO2 nanorods to be grown onto activated carbon. High efficiency towards aqueous methyl orange adsorption/degradation

Dodecylpyridinium chloride removal by persulfate activation using UVA radiation or temperature: experimental design and kinetic modeling

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Pressurized photo-reactor for the degradation of the scarcely biodegradable DPC cationic surfactant in water

Cited by 10 publications

References 33 publications

CO2 photoconversion to fuels under high pressure: effect of TiO2 phase and of unconventional reaction conditions

CO2 photoconversion to fuels under high pressure: effect of TiO2 phase and of unconventional reaction conditions

A detailed investigation of MnO2 nanorods to be grown onto activated carbon. High efficiency towards aqueous methyl orange adsorption/degradation

Dodecylpyridinium chloride removal by persulfate activation using UVA radiation or temperature: experimental design and kinetic modeling

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CO₂ photoconversion to fuels under high pressure: effect of TiO₂ phase and of unconventional reaction conditions

CO₂ photoconversion to fuels under high pressure: effect of TiO₂ phase and of unconventional reaction conditions