Comparison of denitrification at low temperature using encapsulated Paracoccus denitrificans, Pseudomonas fluorescens and mixed culture

Vacková, Lenka; Srb, Martin; Stloukal, Radek; Wanner, J.

doi:10.1016/j.biortech.2011.01.024

Cited by 86 publications

(24 citation statements)

References 26 publications

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“…A total of nine genera were identified for TRB in the sludge, among which Sulfuritalea (0.54%) had the highest abundance, followed by Armatimonas (0.39%), Prosthecobacter (0.37%), Hyphomicrobium (0.34%), Azonexus (0.20%), Longilinea (0.15%), Novosphingobium (0.13%), Paracoccus (0.11%) and Rhodobacter (0.10%) ( Table 2). Paracoccus serving as an important denitrifier [26] has been reported to be TRB in STP sludge treated with tetracycline [13]. To our knowledge, the other 8 genera were firstly identified as TRB in this study, indicating that pyrosequencing is a new powerful tool to profile the ARB communities in the environment.…”

Section: Identification Of Trb In the Sludgementioning

confidence: 73%

Antibiotic Resistance and Prevalence of Class 1 and 2 Integrons in Escherichia coli Isolated from Two Wastewater Treatment Plants, and Their Receiving Waters (Gulf of Gdansk, Baltic Sea, Poland)

2015

Wastewater and Public Health

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Abstract:In order to comprehensively investigate tetracycline resistance in activated sludge of sewage treatment plants, 454 pyrosequencing and Illumina high-throughput sequencing were used to detect potential tetracycline resistant bacteria (TRB) and antibiotic resistance genes (ARGs) in sludge cultured with different concentrations of tetracycline. Pyrosequencing of 16S rRNA gene revealed that tetracycline treatment greatly affected the bacterial community structure of the sludge. Nine genera consisting of Sulfuritalea, Armatimonas, Prosthecobacter, Hyphomicrobium, Azonexus, Longilinea, Paracoccus, Novosphingobium and Rhodobacter were identified as potential TRB in the sludge. Results of qPCR, molecular cloning and metagenomic analysis consistently indicated that tetracycline treatment could increase both the abundance and diversity of the tet genes, but decreased the occurrence and diversity of non-tetracycline ARG, especially sulfonamide resistance gene sul2. Cluster analysis showed that tetracycline treatment at subinhibitory concentrations (5 mg/L) was found to pose greater effects on the bacterial community composition, which may be responsible for the variations of the ARGs abundance. This study indicated that joint use of 454 pyrosequencing and Illumina high-throughput sequencing can be effectively used to explore ARB and ARGs in the environment, and future studies should include an in-depth investigation of the relationship between microbial community, ARGs and antibiotics in sewage treatment plant (STP) sludge. OPEN ACCESSInt. J. Mol. Sci. 2014, 15 10084

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Section: Identification Of Trb In the Sludgementioning

confidence: 73%

Antibiotic Resistance and Prevalence of Class 1 and 2 Integrons in Escherichia coli Isolated from Two Wastewater Treatment Plants, and Their Receiving Waters (Gulf of Gdansk, Baltic Sea, Poland)

2015

Wastewater and Public Health

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“…1) followed zero-order kinetics with obvious nitrite peaks as described previously Silverstein 1998, 1999;Trogl et al 2011a;Vackova et al 2011). The Biocatalyst's denitrification activities obtained in the preliminary batch tests (Table 2, lines 1 and 2) revealed obvious inhibitory effect of the real wastewater.…”

Section: Batch Tests: Inhibition Of Denitrificationmentioning

confidence: 93%

Removal of nitrates from high-salinity wastewaters from desulphurization process with denitrifying bacteria encapsulated in Lentikats Biocatalyst

Trögl

Krhůtková

Pilařová

et al. 2012

Int. J. Environ. Sci. Technol.

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Successful elimination of high concentrations of N-NO x-(up to 250 mg/L) from high salinity wastewaters (up to 35 g/L Cl -? 17 g/L SO 4 2-) originating from desulphurization process within coal power stations was achieved using pure cultures of denitrifying bacteria encapsulated in porous polyvinyl alcohol lenses (so called Lentikats Biocatalyst, LB). Laboratory batch tests revealed inhibitory influence of the raw wastewater on the denitrification activity, which was partially mitigated by the addition of P-PO 4 3-. In following continuous tests, the denitrification activities reached the range 150-450 mg N/ h/kg LB, i.e., values suitable for industrial scale applications. The higher activities were achieved under a lower salinity, higher N-NO x -influent concentrations and a prolonged retention time. The effluent N-NO x -concentrations were below the determination limit of 5 mg/L. After a period of 3 months, a significant decrease of denitrification activity of Lentikats Biocatalyst was observed. Addition of nutrients into the wastewater enabled fast regeneration of the initial activity. The overall results proved the applicability of Lentikats Biocatalysts for the removal of nitrates from high-salinity desulphurization water and other industrial wastewaters of similar character.

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“…Therefore, finding a method to remove the undesirable nitrogen is essential and urgent. From the previous reports, biological methods, which have the advantages of low-cost, high efficiency, and good sustainability, have been widely used in city sewage treatment [6]. However, the traditional method of biological nitrogen removal requires two separate systems: autotrophic nitrification (NH 4 + →NH 2 OH→NO 2 − →NO 3 − ) under aerobic conditions and heterotrophic denitrification (NO 3 − →NO 2 − →NO→N 2 O→N 2 ) under anoxic conditions [7,8], making it relatively more expensive.…”

Section: Introductionmentioning

confidence: 99%

Heterotrophic Nitrification-Aerobic Denitrification Performance of Strain Y-12 under Low Temperature and High Concentration of Inorganic Nitrogen Conditions

et al. 2017

Water

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Comparison of denitrification at low temperature using encapsulated Paracoccus denitrificans, Pseudomonas fluorescens and mixed culture

Cited by 86 publications

References 26 publications

Antibiotic Resistance and Prevalence of Class 1 and 2 Integrons in Escherichia coli Isolated from Two Wastewater Treatment Plants, and Their Receiving Waters (Gulf of Gdansk, Baltic Sea, Poland)

Antibiotic Resistance and Prevalence of Class 1 and 2 Integrons in Escherichia coli Isolated from Two Wastewater Treatment Plants, and Their Receiving Waters (Gulf of Gdansk, Baltic Sea, Poland)

Removal of nitrates from high-salinity wastewaters from desulphurization process with denitrifying bacteria encapsulated in Lentikats Biocatalyst

Heterotrophic Nitrification-Aerobic Denitrification Performance of Strain Y-12 under Low Temperature and High Concentration of Inorganic Nitrogen Conditions

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