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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Supercritically treated TiO2-activated carbon composites for cleaning ammonia

Journal of Wood Science volume 52, pages 533–538 (2006)Cite this article

Abstract

Supercritically treated TiO2-activated carbon (Sc-TiO2-AC) composites were studied for their adsorption and photocatalytic activities toward gaseous ammonia (NH3). The experiments were carried out at 26°C using a black lamp. The Sc-TiO2-AC composites attained higher photocatalytic activities than supercritically treated TiO2 (Sc-TiO2). NH3 was found out to be converted by the Sc-TiO2-AC composites to compounds such as N2, N2O, NO2 −, and NO3 −. The main product was harmless N2. The Sc-TiO2-AC composites are expected to be applied as effective cleaning materials to environments that emit offensive NH3 odors.

References

  1. Shiskowski DM, Mavinic DS (1998) Biological treatment of a high ammonia leachate: influence of external carbon during initial startup. Water Res 32:2533–2541

    Article  CAS  Google Scholar 

  2. Luo YL, AL-Othman R, Christian GD, Ruzicka J (1995) Flow/sequential injection determination of gaseous ammonia with a glass diffusion denuder. Talanta 42:1545–1551

    Article  CAS  PubMed  Google Scholar 

  3. Park SJ, Kim KD (1999) Adsorption behaviors of CO2 and NH3 on chemically surface-treated activated carbons. J Colloid Interface Sci 212:186–189

    Article  CAS  PubMed  Google Scholar 

  4. Gang L, Grondelle JV, Anderson BG, Santen RAV (1999) Selective low temperature NH3 oxidation to N2 on copper-based catalysts. J Catal 186:100–109

    Article  CAS  Google Scholar 

  5. Long RQ, Yang RT (2002) Selective catalytic oxidation of ammonia to nitrogen over Fe2O3-TiO2 prepared with a sol-gel method. J Catal 207:158–165

    Article  CAS  Google Scholar 

  6. Amblard M, Burch R, Southward BWL (1999) The selective conversion of ammonia to nitrogen on metal oxide catalysts under strongly oxidising conditions. Appl Catal B-Environ 22:159–166

    Article  Google Scholar 

  7. Li Y, Armor JN (1997) Selective NH3 oxidation to N2 in a wet stream. Appl Catal B-Environ 13:131–139

    Article  Google Scholar 

  8. Bonsen EM, Schroeter S, Jacobs H, Broekaert JAC (1997) Photocatalytic degradation of ammonia with TiO2 as photocatalyst in the laboratory and under the use of solar radiation. Chemosphere 35:1431–1445

    Article  CAS  Google Scholar 

  9. Wang A, Edwards JG, Davies JA (1994) Photooxidation of aqueous ammonia with titania-based heterogeneous catalysts. Sol Energy 52:459–466

    Article  CAS  Google Scholar 

  10. Nazir M, Takasaki J, Kumazawa H (2003) Photocatalytic degradation of gaseous ammonia and trichloroethylene over TiO2 ultrafine powders deposited on activated carbon particles. Chem Eng Commun 190:322–333

    Article  CAS  Google Scholar 

  11. Mozzanega H, Herrmann JM, Pichat P (1979) NH3 oxidation over UV-irradiated TiO2 at room temperature. J Phys Chem 83:2251–2255

    Article  CAS  Google Scholar 

  12. Swarnalatha B, Anjaneyulu Y (2004) Studies on the heterogeneous photocatalytic oxidation of 2,6-dinitrophenol in aqueous TiO2 suspension. J Mol Catal A: Chem 223:161–165

    Article  CAS  Google Scholar 

  13. Lim TH, Jeong SM, Kim SD, Gyenis J (2000) Photocatalytic decomposition of NO by TiO2 particles. J Photochem Photobiol A 134:209–217

    Article  CAS  Google Scholar 

  14. Torimoto T, Okawa Y, Takeda N, Yoneyama H (1997) Effect of activated carbon content in TiO2-loaded activated carbon on photodegradation behaviors of dichloromethane. J Photochem Photobiol A 103:153–157

    Article  CAS  Google Scholar 

  15. Nozawa M, Tanigawa K, Hosomi M (2001) Development of deodorization system using titanium dioxide photocatalyst supported on fiber activated carbon. Johkasou Kenkyu 13:27–35

    CAS  Google Scholar 

  16. Doi M, Saka S, Miyafuji H, Goring DAI (2000) Development of carbonized TiO2-woody composites for environmental cleaning. Mater Sci Res Int 6:15–21

    CAS  Google Scholar 

  17. Tokoro H, Saka S (2001) The photo-catalytic mechanism for formaldehyde by carbonized TiO2-woody composites. Mater Sci Res Int 7:132–137

    CAS  Google Scholar 

  18. Huang B, Saka S (2003) Photocatalytic activity of TiO2 crystallite-activated carbon composites prepared in supercritical isopropanol for the decomposition of formaldehyde. J Wood Sci 49:79–85

    Article  CAS  Google Scholar 

  19. Saka S, Dadan K (2000) Biodiesel fuel from rapeseed oil as prepared in supercritical methanol. Fuel 80:225–231

    Article  Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Socio-Environmental Energy Science, Graduate School of Energy Science, Kyoto University, Kyoto, 606-8501, Japan

    Hongmei Hou, Hisashi Miyafuji, Haruo Kawamoto & Shiro Saka

Authors
  1. Hongmei Hou
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  2. Hisashi Miyafuji
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  3. Haruo Kawamoto
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  4. Shiro Saka
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Correspondence to Shiro Saka.

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Hou, H., Miyafuji, H., Kawamoto, H. et al. Supercritically treated TiO2-activated carbon composites for cleaning ammonia. J Wood Sci 52, 533–538 (2006). https://doi.org/10.1007/s10086-006-0811-6

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  • DOI: https://doi.org/10.1007/s10086-006-0811-6

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