Cited by 105TiO2 Photocatalysis and Solar CellsAdvanced oxidation water treatmentAdsorption and biosorption for pollutant removal

Photocatalytic degradation of an azo-dye on TiO2/activated carbon composite material

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Andriantsiferana, C., Mohamed, E.F., Delmas, H.·2014·Environmental Technology

Abstract

A sequential adsorption/photocatalytic regeneration process to remove tartrazine, an azo-dye in aqueous solution, has been investigated. The aim ofthis work was to compare the effectiveness of an adsorbent/photocatalyst composite-TiO2 deposited onto activated carbon (AC) - and a simple mixture of powders of TiO2 and AC in same proportion. The composite was an innovative material as the photocatalyst, TiO2, was deposited on the porous surface ofa microporous-AC using metal-organic chemical vapour deposition in fluidized bed. The sequential process was composed of two-batch step cycles: every cycle alternated a step of adsorption and a step of photocatalytic oxidation under ultra-violet (365 nm), at 25 degreeC and atmospheric pressure. Both steps, adsorption and photocatalytic oxidation, have been investigated during four cycles. For both materials, the cumulated amounts adsorbed during four cycles corresponded to nearly twice the maximum adsorption capacities qmax proving the photocatalytic oxidation to regenerate the adsorbent. Concerning photocatalytic oxidation, the degree of mineralization was higher with the TiO2/AC composite: for each cycle, the value of the total organic carbon removal was 25% higher than that obtained with the mixture powder. These better photocatalytic performances involved better regeneration than higher adsorbed amounts for cycles 2, 3 and 4. Better performances with this promising material - TiO2 deposited onto AC - compared with TiO2 powder could be explained by the vicinity of photocatalytic and AC adsorption sites.

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Crossref · 10.1080/09593330.2013.828094

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  • Activated carbon is a porous, amorphous solid carbon material derived mainly from carbonaceous or plant-based (lignocellulosic) materials and can be used as a support for TiO2.

    “Activated carbon (AC), also termed active carbon, activated charcoal, or activated coal, is a porous, amorphous solid carbon material derived mainly from carbonaceous or plantbased (lignocellulosic) materials such as coconut shell, [113][114][115][116][117][118][119] activated charcoal, 120 sawdust of Tabebuia pentaphyla wood, 121-124 pine sawdust, 125 beech sawdust, 126 peach stones, 127 almond”

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Authors
Andriantsiferana, C., Mohamed, E. F., & Delmas, H.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • National Research Centre (EG)
Corresponding author
Andriantsiferana, C.
Venue
Environmental Technology
Published
2013-09-30
Volume
35
Issue
3
Pages
355-363
ISSN
  • 0959-3330 (ISSN-L)
  • 1479-487X
OpenAlex
W1553460576
Cited by
105
References
49
Citations by year
2026: 1 · 2025: 7 · 2024: 4 · 2023: 5 · 2022: 9 · 2021: 13 · 2020: 11 · 2019: 14 · 2018: 9 · 2017: 13 · 2016: 9 · 2015: 8 · 2014: 2
FWCI
2.30
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Environmental Technology (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › TiO2 Photocatalysis and Solar Cells
  • Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
Keywords
photocatalytic degradation, azo dyes, tartrazine, TiO2/activated carbon composite, activated carbon, metalorganic chemical vapor deposition, fluidized bed, UV photocatalysis, dye mineralization, wastewater treatment, adsorbent regeneration
MeSH terms
Catalysis, Charcoal, Coloring Agents, Light, Manufactured Materials, Photochemistry, Tartrazine, Titanium, Water, Water Pollutants, Chemical, Water Purification

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