Effect of inorganic ions, H(2)O(2) and pH on the photocatalytic inactivation of Escherichia coli with silver impregnated combustion synthesized TiO(2) catalyst


Autoria(s): Sontakke, Sharad; Modak, Jayant; Madras, Giridhar
Data(s)

11/08/2011

Resumo

The photocatalytic antibacterial activity of Ag impregnated combustion synthesized TiO(2) (0.25 g/L) was studied against Escherichia coil in presence of UV irradiation. The effect of various parameters, such as anions, canons, hydrogen peroxide and pH, on the photocatalytic inactivation was investigated. The addition of inorganic ions showed a negative effect on inactivation. Among anions, the presence of chloride ions was observed to have a maximum negative effect and reduced the inactivation considerably. Among cations, the bacterial inactivation reduced significantly in the presence of Ca(2+) ions. Hydrogen peroxide addition in combination with Ag/TiO(2) photocatalysis, however, improved the inactivation. Photocatalysis with high concentration of H(2)O(2) yielded complete bacterial inactivation within few minutes. The photocatalytic inactivation of E. coil was not affected by variation in pH. (C) 2011 Elsevier B.V. All rights reserved.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/40448/1/Effect_of_inorganic_ions.pdf

Sontakke, Sharad and Modak, Jayant and Madras, Giridhar (2011) Effect of inorganic ions, H(2)O(2) and pH on the photocatalytic inactivation of Escherichia coli with silver impregnated combustion synthesized TiO(2) catalyst. In: Applied Catalysis B: Environmental, 106 (3-4). pp. 453-459.

Publicador

Elsevier Science B.V.

Relação

http://dx.doi.org/10.1016/j.apcatb.2011.06.003

http://eprints.iisc.ernet.in/40448/

Palavras-Chave #Chemical Engineering
Tipo

Journal Article

PeerReviewed