<abstract xmlns="http://www.w3.org/1999/xhtml"><p> In this paper we focus on the evaluation of toxicity and phototoxicity of phenothiazine dye methylene blue on selected bacteria (<italic>Escherichia coli </italic>CCM 3988, <italic>Pseudomonas aeruginosa </italic>CCM 3955, <italic>Salmonella enterica</italic> ssp. Enterica serovar Enteritidis CCM 4420 and <italic>Bacillus subtilis </italic>CCM 1999), which are part of the activated sludge. The results obtained demonstrate that the induction of photodynamic effect is showed. Increased photoantibacterial activity may lead to inhibition of bacterial metabolic activity in the sludge. This effect may represent a potential risk to the ongoing processes in wastewater treatment.</p></abstract>

In this paper we focus on the evaluation of toxicity and phototoxicity of phenothiazine dye methylene blue on selected bacteria (Escherichia coli CCM 3988, Pseudomonas aeruginosa CCM 3955, Salmonella enterica ssp. Enterica serovar Enteritidis CCM 4420 and Bacillus subtilis CCM 1999), which are part of the activated sludge. The results obtained demonstrate that the induction of photodynamic effect is showed. Increased photoantibacterial activity may lead to inhibition of bacterial metabolic activity in the sludge. This effect may represent a potential risk to the ongoing processes in wastewater treatment.

Effect of photoactive dye on bacteria contained in activated sludge

Department of Environmental Engineering, Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, Bratislava 812 37, Slovak Republic

VÚRUP, a.s., Vlčie hrdlo, 820 03 Bratislava, Slovak Republic

Acta Chimica Slovaca

{"article-title":"Effect of photoactive dye on bacteria contained in activated sludge"}

In this paper we focus on the evaluation of toxicity and phototoxicity of phenothiazine dye methylene blue on selected bacteria (Escherichia coli CCM 3988,...

Effect of photoactive dye on bacteria contained in activated sludge

Published Online: Dec 14, 2012

Page range: 164 - 168

DOI: https://doi.org/10.2478/v10188-012-0025-z

Keywords
methylene blue, bacteria, photodynamic effect, activated sludge

This content is open access.

Effect of photoactive dye on bacteria contained in activated sludge

Published Online: Dec 14, 2012

Page range: 164 - 168

DOI: https://doi.org/10.2478/v10188-012-0025-z

Keywordsmethylene blue, bacteria, photodynamic effect, activated sludge

This content is open access.

Keywords
methylene blue, bacteria, photodynamic effect, activated sludge