Assessing the effectiveness of performic acid disinfection on effluents: focusing on bacterial abundance and diversity.

Autor: Bagagnan S; Laboratoire Eau Environnement Et Systèmes Urbains (Leesu), Univ Paris Est Creteil, Ecole Des Ponts, 61 Avenue du Général de Gaulle, 94000, Créteil, France., Jusselme MD; Laboratoire Eau Environnement Et Systèmes Urbains (Leesu), Univ Paris Est Creteil, Ecole Des Ponts, 61 Avenue du Général de Gaulle, 94000, Créteil, France. jusselme@u-pec.fr., Alphonse V; Laboratoire Eau Environnement Et Systèmes Urbains (Leesu), Univ Paris Est Creteil, Ecole Des Ponts, 61 Avenue du Général de Gaulle, 94000, Créteil, France., Guerin-Rechdaoui S; Direction de L'Innovation, SIAAP, 92700, Colombes, France., Marconi A; Direction de L'Innovation, SIAAP, 92700, Colombes, France., Rocher V; Direction de L'Innovation, SIAAP, 92700, Colombes, France., Moilleron R; Laboratoire Eau Environnement Et Systèmes Urbains (Leesu), Univ Paris Est Creteil, Ecole Des Ponts, 61 Avenue du Général de Gaulle, 94000, Créteil, France.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Oct; Vol. 31 (48), pp. 58252-58262. Date of Electronic Publication: 2024 Sep 18.
DOI: 10.1007/s11356-024-34958-4
Abstrakt: Poorly-treated wastewater harbors harmful microorganisms, posing risks to both the environment and public health. To mitigate this, it is essential to implement robust disinfection techniques in wastewater treatment plants. The use of performic acid (PFA) oxidation has emerged as a promising alternative, due to its powerful disinfection properties and minimal environmental footprint. While PFA has been used to inactivate certain microbial indicators, its potential to tackle the entire microbial community in effluents, particularly resistant bacterial strains, remains largely unexplored. The present study evaluates the efficacy of PFA disinfection on the microbial communities of a WWTP effluent, through microbial resistance mechanisms due to their membrane structure. The effluent microbiome was quantified and identified. The results showed that the number of damaged cells increases with CT, reaching a maximum for CT = 240 mg/L•min and plateauing around 60 mg/L•min, highlighting the optimal conditions for PFA-disinfection against microbial viability. A low PFA level with a 10-min contact time significantly affected the microbial composition. It is worth noting the sensitivity of several bacterial genera such as Flavobacterium, Pedobacter, Massilia, Exiguobacterium, and Sphingorhabdus to PFA, while others, Acinetobacter, Leucobacter, Thiothrix, Paracoccus, and Cloacibacterium, showed resistance. The results detail the resistance and sensitivity of bacterial groups to PFA, correlated with their Gram-positive or Gram-negative membrane structure. These results underline PFA effectiveness in reducing microbial levels and remodeling bacterial composition, even with minimal concentrations and short contact times, demonstrating its suitability for widespread application in WWTPs.
(© 2024. The Author(s).)
Databáze: MEDLINE
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