Export file:

Format

  • RIS(for EndNote,Reference Manager,ProCite)
  • BibTex
  • Text

Content

  • Citation Only
  • Citation and Abstract

Inactivation of Bacterial Spores and Vegetative Bacterial Cells by Interaction with ZnO-Fe2O3 Nanoparticles and UV Radiation

1 Department of Chemical and Biological Sciences. Sciences School. Universidad de las Américas Puebla. Ex-Hacienda de Santa Catarina Mártir. C.P. 72810. Cholula, Puebla, México
2 Division of Hydrologic Sciences, Desert Research Institute. Las Vegas, Nevada, USA

Special Issues: Water for an increasing population in a changing climate

ZnO-Fe2O3 nanoparticles (ZnO-Fe NPs) were synthesized and characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and dynamic light scattering (DLS). The generation of chemical reactive hydroxyl radicals (OH) was measured spectrophotometrically (UV-Vis) by monitoring of p-nitrosodimethylaniline (pNDA) bleaching. Inactivation of E. coli and B. subtilis spores in the presence of different concentrations of ZnO-Fe NPs, under UV365nm or visible radiation, was evaluated. We observed the best results under visible light, of which inactivation of E. coli of about 90% was accomplished in 30 minutes, while B. subtilis inactivation close to 90% was achieved in 120 minutes. These results indicate that the prepared photocatalytic systems are promising for improving water quality by reducing the viability of water-borne microorganisms, including bacterial spores.
  Figure/Table
  Supplementary
  Article Metrics

References

1. United Nations General Assembly, Resolution 64/292. The human right to water and sanitation 2010. Available from: http://www.un.org/es/comun/docs/?symbol=A/RES/64/292&lang=E.

2. World Health Organization, Meeting the MDG drinking water and sanitation. The urban and rural challenge of the decade, UNICEF, 2006. Available from: http://apps.who.int/iris/bitstream/10665/43488/1/9241563257_eng.pdf?ua=1.

3. World Health Organization, Global status report on noncommunicable diseases, WHO, 2010.

4. J Doménech (2003) Cryptosporidium y Giardia, problemas emergentes en el agua del consumo humano. Offarm: Farm Soc 22: 112-116.

5. R Bain, R Cronk, R Hossain, et al. (2014) Global assessment of exposure to faecal contamination through drinking water based on a systematic review. Trop Med Int Health 19: 917-927.    

6. A Pruss-Ustun, J Bartram, T Clasen, et al. (2014) Burden of disease from inadequate water, sanitation and hygiene in low- and middle- income settings: a retrospective analysis of data from 145 countries. Trop Med Int Health 19: 894-905.    

7. Wolf J, Pruss-Ustun A, Cumming O, et al. (2014) Assesing the impact of drinking water and sanitation on diarrhoeal disease in low- and middle-income settings: systematic review and meta-regression. Trop Med Int Health 19: 928-942.

8. Virto R, Mañas P, Álvarez I, et al. (2005) Membrane damage and microbial inactivation by chlorine in the absence and presence of a chlorine-demanding substrate. Appl Environ Microbiol 71: 5022-5028.

9. MT Orta, J Martínez, I Monje, et al. (2004) Destruction of helminth (Ascaris summ) eggs by ozone. Sci Eng 26: 359-366.

10. MT Orta, MN Rojas, M Vaca. Destruction of helminth (Ascaris suum) eegs by ozone: second stage. Wat Supply 2: 227-233.

11. Z Alouini, M Jemli (2004) Destruction of helminth eggs by photosensitized porphyrin. J Environ Monit 3: 548-551.

12. ER Bandala, MA Peláez, DD Dionysiou, et al. (2007) Degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) using cobaltperoximonosulfate in Fenton-like process. J Photochem Photobiol A 186: 357-363.    

13. RM Ramírez, M Galvan, I Retama, et al. (2006) Viability reduction of parasites (Ascaris spp.) in water with photo-Fenton reaction via response surface methodology. Wat Pract Technol 1: 120-125.

14. ML Maya-Treviño, JL Guzmán-Mar, L Hinojosa-Reyes, et al. (2014) Activity of the ZnO-Fe2O3 catalyst on the degradation of Dicamba and 2,4-D herbicides using simulated solar light. Ceram Int 40: 8701-8708.

15. JN Hasnidawani (2016) Synthesis of ZnO nanostructures using sol-gel method. Proc Chem l: 211-216.

16. EDESSGIIBI Barashkov N.D (2010) Electrochemical chlorine-free AC disinfection of water contaminated with Salmonella typhimurium bacteria. Russ J Electrochem 46: 306-311.

17. Q M C C F S D B A Martinez-Huitle CA (2004)Electrochemical incineration of chloroanilic acid using Ti/IRO2, Pb/PbO2 and Si/BDD electrodes. Electrochim Acta 949-956.

18. Q P Z J S T H H Zang L (1997) Photocatalytic bleaching of p-nitrosodimethylaniline in TiO2 aqueous suspensions: A kinetic treatment involving some primary events photoinduced on the particle surface. J Mol Catal A 235-245.

19. Muff J, Bennedsen LR, Sogaard EG (2011) Study of electrochemical bleaching of p-nitrosodimethylaniline and its role of hydroxyl radical probe compound. J Appl Electrochem 41: 599-607.    

20. T S H M B E Ramires-Sanchez I.M. (2017) Resource efficiency analysis for photocatalytic degradation and mineralization of estriol using TiO2 nanoparticles. Chemosphere 1270-1285, M

21. M J B L K K S E Simonsen M.E. (2010) Photocatalytic bleaching of p-nitrosodimethylaniline and a comparison to the performance of other AOP technologies. J Photochem Photobiol A 244-249.

22. C T I Kraljic (1965) p-nitrosodimethylaniline as an OH radical scavenger in radiation chemistry. J Am Chem Soc 87: 2547-2550.

23. Fahataziz A (1977) Selected specific rates of reactions of transient form water in aqueous solutions III: Hydroxyl radical and pehydroxyl radical and their radical ions. Washington, 1977.

24. M C S M Bors W (1979) On the nature of biochemically generated hydroxyl radicals. European J Biochem 621-627.

25. MT Madigan, JM Martinko, DA Stahl and D. P. Clark Brock, Biology of Microorganisms, New York: Pearson Higher Education, 2011.

26. JL Sánchez-Salas, ML Santiago-Lara, B Setlow, et al. (1992) Properties of Bacillus megaterium and Bacillus subtilis mutants which lack the protease that degrades small, acid-soluble proteins during spre germination. J Bacteriol 174: 807-814.

27. Jones N, Ray B, Ranjit KT, et al. (2008) Antibacterial activity of ZnO nanoparticle suspensions on a broad spectrum of microorganism. FEMS Microbiol Lett 279: 71-76.    

28. Sirelkhatim A, Mahmud S, Seeni A, et al. (2015) Review on zinc oxide nanoparticles: antibacterial activity and toxicity mechanism. Nano Micro Lett 7: 219-242.

29. J Achouri, S Corbel, A Aboulaich, et al. (2014) Aqueous synthesis and enhanced photocatalytic activity of ZnO/Fe2O3 heterostructures. J Phys Chem Solids 75: 1081-1087.

30. Setlow P (2011) Resistance of SPores of Bacillus Species to Ultraviolet Light. Environ Mol Mutagen 38: 97-104.

31. N Vermeulen, WJ Keeler, K Nandakumar, et al. (2007) The bactericidal effect of ultraviolet and visible light on Escherichia coli. Biotechnol Bioeng 99: 550-556.

Copyright Info: © 2017, José Luis Sánchez-Salas, et al., licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

Download full text in PDF

Export Citation

Article outline

Show full outline
Copyright © AIMS Press All Rights Reserved