Species diversity of bacteria isolated from soil, sludge sewage and digestate

Wójcik-Fatla, Angelina; Kowalczyk, Katarzyna; Kłapeć, Teresa; Zdybel, Jolanta; Farian, Ewelina; Sroka, Jacek; Cencek, Tomasz

doi:10.1289/isee.2022.p-1145

ISEE Conference Abstracts

2022

DOI: 10.1289/isee.2022.p-1145

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Species diversity of bacteria isolated from soil, sludge sewage and digestate

Angelina Wójcik-Fatla

Katarzyna Kowalczyk

Teresa Kłapeć

et al.

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2024

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Enterobacteriaceae in Sewage Sludge and Digestate Intended for Soil Fertilization

Wójcik-Fatla,

Farian,

Kowalczyk

et al. 2024

Pathogens

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Substances of organic origin are seeing increasing use in agriculture as rich sources of nutrients for plants. The aim of this study was to determine the microbiological contamination of sewage sludge and digestate to assess their safe use as fertilizers in Poland. The assessment of microbial soil, sewage sludge and digestate contamination was based on the total number of mesophilic bacteria and Gram-negative bacteria from the Enterobacteriaceae family. The presence of Escherichia coli and Salmonella spp. was identified via culture and the presence of Enterobacteriaceae species was determined via biochemical and molecular methods. In laboratory conditions, the survival of E. coli in soil fertilized with sewage sludge or digestate inoculated with a reference strain was determined. The average concentration of Enterobacteriaceae in soil, sewage sludge and digestate samples was 1.1 × 104 CFU/g, 9.4 × 105 CFU/g and 5.6 × 106 CFU/g, respectively. Escherichia coli was detected in all sample types. From the soil samples, Serratia, Enterobacter, Pantoea, Citrobacter and Pseudomonas genera were identified the most frequently, while in sewage sludge and digestate, E. coli was predominant. Based on the results of our laboratory experiment, it can be concluded that after three weeks, fertilization with organic waste in acceptable doses does not significantly increase soil contamination with Enterobacteriaceae.

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Enterobacteriaceae in Sewage Sludge and Digestate Intended for Soil Fertilization

Wójcik-Fatla,

Farian,

Kowalczyk

et al. 2024

Pathogens

View full text Add to dashboard Cite

show abstract

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Species diversity of bacteria isolated from soil, sludge sewage and digestate

Cited by 1 publication

References 0 publications

Enterobacteriaceae in Sewage Sludge and Digestate Intended for Soil Fertilization

Enterobacteriaceae in Sewage Sludge and Digestate Intended for Soil Fertilization

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