Journal of Radioanalytical and Nuclear Chemistry

, Volume 286, Issue 1, pp 287–293 | Cite as

Radiolysis of 1-naphthol in aqueous solutions

  • Thang M. Ngo
  • Nam M. Hoang
  • Tram T. M. Tran


The effects of absorbed doses, initial pH and 1-naphthol concentration onto its radiolysis in aqueous sulphuric and hydrochloric acids by gamma rays from 60Co were investigated. Under the experimental conditions, 1-naphthol degradation yields increased with increasing the absorbed doses (0.3–3.0 kGy) and with decreasing the initial 1-naphthol concentration (20–1 ppm). It was found out that the hydrated electrons did not play any significant roles in 1-naphthol radiolysis, as the degradation yields were higher at pH0 ~ 0.46 compared to those at pH0 ~ 2.0–5.0. The corresponding radiolytic yields G(−1-naphthol) were (6.13 ± 1.00)) × 10−2 and (5.11 ± 0.22) × 10−2 μmol/J in sulphuric acids, (15.61 ± 3.85) × 10−2 and (4.76 ± 0.48) × 10−2 μmol/J in hydrochloric acids. 1-Naphthol degradation rates could be described by the kinetic equations of pseudo-first-order reactions. An empirical relation between the observed reaction constants k D and the initial 1-naphthol concentrations was established, enabling to predict the absorbed doses required for a given treatment efficiency. Three products of 1-naphthol degradation were revealed using an HPLC/UV procedure.


Gamma-radiolysis 1-Naphthol Water treatment 



This work was financially supported by the Department of Science and Technology (DOST)—Ho Chi Minh City’s People Committee.


  1. 1.
    IAEA-TECDOC-1598 (2009) Radiation treatment of polluted water and wastewater, ViennaGoogle Scholar
  2. 2.
    da Silva MP, Vieira EM (2009) Degradation of alachor herbicide by gamma radiation from cobalt-60 in aqueous and alcohol solution. J Radioanal Nucl Chem 281(3):323–327CrossRefGoogle Scholar
  3. 3.
    Liu Z, Zhang H, Liu Y (2007) Radiation of 3-amino-2-oxazolidinone in aqueous solution by electron beam irradiation. Radiat Phys Chem 76:1903–1910CrossRefGoogle Scholar
  4. 4.
    Gettoff N, Beckbolet M (1999) Radiation induced decomposition of chlorinated benzaldehydes in aqueous solutions. Radiat Phys Chem 56(3):333–339CrossRefGoogle Scholar
  5. 5.
    Getoff N, Lutz W (1999) Radiation induced decomposition of hydrocarbons in water resources. Radiat Phys Chem 54:377–384CrossRefGoogle Scholar
  6. 6.
    Leinte NKV, Berger P, Gehringer P (1999) Gamma-irradiation for the removal of atrazine in aqueous solutions containing humic substances. Radiat Phys Chem 55(3):317–322CrossRefGoogle Scholar
  7. 7.
    Hoang NM, Ngo TM, Luu TTT, Truong VH (2008) On the degradation of carbaryl in water. In: Proc 7th Nat Conf Nucl Sci Technol, Sci & Technol Publisher, Hanoi, pp 323–328 (in Vietnamese)Google Scholar
  8. 8.
    Cooper WJ, Curry RD, O’Shea KE (1998) Environmental applications of ionizing radiation. Wiley, New YorkGoogle Scholar
  9. 9.
    PAN Pesticides Database—Chemicals: 1-naphthol—identification, toxicity, use, water pollution potential, ecological toxicity and regulatory information.
  10. 10.
    Gosselin RE et al (eds) (1976) Clinical toxicology of commercial products, Section II, 4th edn. Eilliam & Wilkins, Baltimore, p 126Google Scholar
  11. 11.
    Hoang ND, Do NTQ, Nguyen KB, Tran VT, Nguyen LD, Ngo TM (2008) Sorption of heavy metal ions & organic pollutants onto U-Minh-Ha humins. In: Proc 1st Int Conf Environ Natural Resources. VNU-HCM Publisher, Ho Chi Minh City, pp 253–258Google Scholar
  12. 12.
    Chen B, Chen Z (2009) Sorption of naphthalene and 1-naphthol by biochars of orange peels with different pyrolytic temperatures. Chemosphere 76(1):127–133CrossRefGoogle Scholar
  13. 13.
    Zhang W, Hong C, Pan B, Zhang Q, Jiang P, Jia K (2009) Sorption enhancement of 1-naphthol onto a hydrophilic hyper-cross-linked polymer resin. J Hazard Mater 163(1):53–57CrossRefGoogle Scholar
  14. 14.
    Zhang W, Hong C, Pan B, Xu Z, Zhang Q, Lv L (2008) Removal enhancement of 1-naphthol and 1-naphthylamine in single and binary aqueous phase by acid–basic interactions with polymer adsorbents. J Hazard Mater 158(2–3):293–299CrossRefGoogle Scholar
  15. 15.
    Zhang W, Chen J, Pan B, Zhang Q (2006) Cooperative adsorption behaviours of 1-naphthol and 1-naphthylamine onto nonpolar macroreticular adsorbents. React Funct Polym 66:485–493CrossRefGoogle Scholar
  16. 16.
    Lin D, Zingt B (2008) Adsorption of phenolic compounds by carbon nanotubes: role of aromaticity and substitution of hydroxyl groups. Environ Sci Technol 42(19):7254–7259CrossRefGoogle Scholar
  17. 17.
    Zaitsev VN, Khalaf VA, Zaitseva GN (2008) Organosilica composite for preconcentration of phenolic compounds from aqueous solutions. Anal Bioanal Chem 391(4):1335–1342CrossRefGoogle Scholar
  18. 18.
    Richard C, Halle A, Brahmia O, Malouki M, Halladja S (2007) Auto-remediation of surface waters by solar-light: photolysis of 1-naphthol and two herbicides in pure and synthetic waters. Catal Today 124(3–4):82–88CrossRefGoogle Scholar
  19. 19.
    Brahmia O, Richard C (2005) Photochemical transformation of 1-naphthol in aerated aqueous solution. Photochem Photobiol Sci 4:454–458CrossRefGoogle Scholar
  20. 20.
    Nguyen TTT, Doan NM, Hoang NM, Ngo TM (2010) UV-photolysis of α-naphthol in water. Accepted to publish in J Sci Technol Develop (in vietnamese)Google Scholar
  21. 21.
    Lieu UT, Tran QNM, Nguyen PTT, Hoang NM, Ngo TM (2010) On the possibility to treat 1-naphthol contaminating water by fenton reaction. In: Proc AUN/SEED—Net 2nd regional conf on global environment. VNU-HCM Publisher, Ho Chi Minh City, pp 53–61Google Scholar
  22. 22.
    Shin HS, Lim DM, Lee DH, Kang KH (2009) Reaction kinetics and transformation products of 1-naphthol by Mn oxide-mediated oxidative coupling reaction. J Hazard Mater 165(1–3):540–547CrossRefGoogle Scholar
  23. 23.
    Bhandari A, Xu F, Koch DE, Hunter RP (2009) Peroxidase-mediated polymerization of 1-naphthol: impact of solution pH and ionic strength. J Environ Qual 38(5):2034–2040CrossRefGoogle Scholar
  24. 24.
    Arroyo LJ, Li H, Teppen BJ, Johnston CT, Boyd SA (2005) Oxidation of 1-naphthol coupled to reduction of structural Fe3+ in smectite. Clay Clay Mineral 53(6):587–596CrossRefGoogle Scholar
  25. 25.
    Aktas N, Cicek H, Unal AT, Kibarer G, Kolankaya N, Tanyolac A (2001) Reaction kinetics for laccase-catalyzed polymerization of 1-naphthol. Bioresour Technol 80:29–36CrossRefGoogle Scholar
  26. 26.
    Kulys J, Vidziunaite R, Schneider P (2003) Laccase-catalyzed oxidation of naphthol in the presence of soluble polymers. Enzyme Microb Technol 32:455–463CrossRefGoogle Scholar
  27. 27.
    Karthikeyan KG, Chorover J (2000) Effects of solution chemistry on the oxidative transformation of 1-naphthol and its complexation with humic acids. Environ Sci Technol 34:2939–2946CrossRefGoogle Scholar
  28. 28.
    Chauhan SMS, Kalra B, Mohapatra PP (1999) Oxidation of 1-naphthol and related phenols with hydrogen peroxide and potassium superoxide catalysed by 5, 10, 15, 20-tetraarylporphyrinatorion(III)chlorides in different reaction conditions. J Mol Catal A Chem 137:85–92CrossRefGoogle Scholar
  29. 29.
    Pikaev AK, Silov VP, Spixin VI (1983) Radiolysis of aqueous solutions of lanthanides and actinides (in Russian). Nauka, Moscow, pp 22–28Google Scholar
  30. 30.
    Mezyk SP, Helgeson T, Cole SK, Cooper WJ, Fox RV, Gardinali PR, Mincher BJ (2006) Free radical chemistry of disinfection-byproducts. 1. Kinetics of hydrated electron and hydroxyl radical reactions with halonitromethanes in water. J Phys Chem A 110:2176–2180CrossRefGoogle Scholar
  31. 31.
    Cole SK, Cooper WJ, Fox RV, Gardinali PR, Mezyk SP, Mincher BJ, O’Shea KE (2007) Free radical chemistry of disinfection byproducts. 2. Rate constants and degradation mechanisms of trichloronitromethane (Chloropicrin). Environ Sci Technol 41(3):863–869CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2010

Authors and Affiliations

  • Thang M. Ngo
    • 1
  • Nam M. Hoang
    • 1
  • Tram T. M. Tran
    • 1
  1. 1.Faculty of Chemical EngineeringHo Chi Minh City University of TechnologyHo Chi Minh CityVietnam

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