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Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12128/12918
Title: Selecting Bacteria Candidates for the Bioaugmentation of Activated Sludge to Improve the Aerobic Treatment of Landfill Leachate
Authors: Michalska, Justyna
Piński, Artur
Żur, Joanna
Mrozik, Agnieszka
Keywords: activated sludge; bacteria for bioaugmentation; catabolic traits; genomic sequencing; landfill leachate; selected features of bacteria
Issue Date: 2020
Citation: Water, Vol. 12 (2020), Art. No. 140
Abstract: In this study, a multifaceted approach for selecting the suitable candidates for bioaugmentation of activated sludge (AS) that supports leachate treatment was used. To determine the exploitation of 10 bacterial strains isolated from the various matrices for inoculating the AS contaminated with the Kalina pond leachate (KPL), their degradative potential was analyzed along with their aptitude to synthesize compounds improving remediation of pollutants in wastewater and ability to incorporate into the AS flocs. Based on their capability to degrade aromatic compounds (primarily catechol, phenol, and cresols) at a concentration of 1 mg/mL and survive in 12.5% of the KPL, Pseudomonas putida OR45a and P. putida KB3 can be considered to be the best candidates for bioaugmentation of the AS among all of the bacteria tested. Genomic analyses of these two strains revealed the presence of the genes encoding enzymes related to the metabolism of aromatic compounds. Additionally, both microorganisms exhibited a high hydrophobic propensity (above 50%) and an ability to produce biosurfactants as well as high resistance to ammonium (above 600 g/mL) and heavy metals (especially chromium). These properties enable the exploitation of both bacterial strains in the bioremediation of the AS contaminated with the KPL.
URI: http://hdl.handle.net/20.500.12128/12918
DOI: 10.3390/w12010140
ISSN: 2073-4441
2073-4441
Appears in Collections:Artykuły (WNP)

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