Bioaugmentation

DeFlaun, Mary F.; Steffan, Robert J.

doi:10.1002/0471263397.env303

Cited by 11 publications

(7 citation statements)

References 81 publications

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“…Bioaugmenation is a method that relies on adding specific microorganisms or microbial consortia to biological systems to enhance a desired activity [ 56 ]. This technology can be also applied in anaerobic digestions, e.g., to increase biogas (methane) production.…”

Section: Resultsmentioning

confidence: 99%

Genome-Guided Characterization of Ochrobactrum sp. POC9 Enhancing Sewage Sludge Utilization—Biotechnological Potential and Biosafety Considerations

Poszytek

Karczewska-Golec

Ciok

et al. 2018

IJERPH

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Sewage sludge is an abundant source of microorganisms that are metabolically active against numerous contaminants, and thus possibly useful in environmental biotechnologies. However, amongst the sewage sludge isolates, pathogenic bacteria can potentially be found, and such isolates should therefore be carefully tested before their application. A novel bacterial strain, Ochrobactrum sp. POC9, was isolated from a sewage sludge sample collected from a wastewater treatment plant. The strain exhibited lipolytic, proteolytic, cellulolytic, and amylolytic activities, which supports its application in biodegradation of complex organic compounds. We demonstrated that bioaugmentation with this strain substantially improved the overall biogas production and methane content during anaerobic digestion of sewage sludge. The POC9 genome content analysis provided a deeper insight into the biotechnological potential of this bacterium and revealed that it is a metalotolerant and a biofilm-producing strain capable of utilizing various toxic compounds. The strain is resistant to rifampicin, chloramphenicol and β-lactams. The corresponding antibiotic resistance genes (including blaOCH and cmlA/floR) were identified in the POC9 genome. Nevertheless, as only few genes in the POC9 genome might be linked to pathogenicity, and none of those genes is a critical virulence factor found in severe pathogens, the strain appears safe for application in environmental biotechnologies.

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Section: Resultsmentioning

confidence: 99%

Genome-Guided Characterization of Ochrobactrum sp. POC9 Enhancing Sewage Sludge Utilization—Biotechnological Potential and Biosafety Considerations

Poszytek

Karczewska-Golec

Ciok

et al. 2018

IJERPH

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“…Bioaugmentation is the practice of adding specialized or a mixed community of microorganisms to a system to obtain a desired process function. 86 A recent review published by Herrero and Stuckey 87 broadly covers the application of bioaugmentation in wastewater treatment. Bioaugmentation of anaerobic digesters has now been demonstrated in studies for reactor start-up, 88 odor reduction, 89 and degradation of organic compounds, including 3-chlorobenzoate, 90 pentachlorophenol, 91 tetrachloroethene, 92 benzene, 93 selenate and nitrate, 94 phenol and cresol, 95 fat, oil, and grease, 96 and oleate, 97 and to aid in the recovery of upset digesters.…”

Section: Relating Microbial Community Structure To Digester Stabilitymentioning

confidence: 99%

Relating Anaerobic Digestion Microbial Community and Process Function : Supplementary Issue: Water Microbiology

et al. 2015

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Anaerobic digestion (AD) involves a consortium of microorganisms that convert substrates into biogas containing methane for renewable energy. The technology has suffered from the perception of being periodically unstable due to limited understanding of the relationship between microbial community structure and function. The emphasis of this review is to describe microbial communities in digesters and quantitative and qualitative relationships between community structure and digester function. Progress has been made in the past few decades to identify key microorganisms influencing AD. Yet, more work is required to realize robust, quantitative relationships between microbial community structure and functions such as methane production rate and resilience after perturbations. Other promising areas of research for improved AD may include methods to increase/control (1) hydrolysis rate, (2) direct interspecies electron transfer to methanogens, (3) community structure–function relationships of methanogens, (4) methanogenesis via acetate oxidation, and (5) bioaugmentation to study community–activity relationships or improve engineered bioprocesses.

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“…Bioaugmentation is the practice of adding specific microorganisms to a system to enhance a desired activity (Rittmann and Whiteman, 1994;Deflaun and Steffan, 2002). In wastewater treatment, bioaugmentation has most frequently been applied to aerobic systems to increase the population of nitrifying bacteria after upsets from uncontrolled biomass loss, fluctuations in pH, toxic events, or temperature decrease (Rittmann and Whiteman, 1994;Abeysinghe et al, 2002;Satoh et al, 2003;Head and Oleszkiewicz, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…In wastewater treatment, bioaugmentation has most frequently been applied to aerobic systems to increase the population of nitrifying bacteria after upsets from uncontrolled biomass loss, fluctuations in pH, toxic events, or temperature decrease (Rittmann and Whiteman, 1994;Abeysinghe et al, 2002;Satoh et al, 2003;Head and Oleszkiewicz, 2005). Bioaugmentation has also been used for other aerobic applications, including improved flocculation and degradation of specific substrates (Van Limbergen et al, 1998), and for soil and groundwater bioremediation (Deflaun and Steffan, 2002;Singer et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Bioaugmentation for improved recovery of anaerobic digesters after toxicant exposure

et al. 2010

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Abstract:Bioaugmentation was investigated as a method to decrease the recovery period of anaerobic digesters exposed to a transient toxic event. Two sets of laboratory-scale digesters (SRT = 10 days, OLR = 2 g COD/Lday),started with inoculum from a digester stabilizing synthetic municipal wastewater solids (MW) and synthetic industrial wastewater (WW), respectively, were transiently exposed to the model toxicant, oxygen.Bioaugmented digesters received 1.2 g VSS/L-day of an H2-utilizing culture NOT THE PUBLISHED VERSION; this is the author's final, peer-reviewed manuscript. The published version may be accessed by following the link in the citation at the bottom of the page.Water Research, Vol. 44, No. 12 (June 2010): pg. 3555-3564. DOI. This article is © Elsevier and permission has been granted for this version to appear in e-Publications@Marquette. Elsevier does not grant permission for this article to be further copied/distributed or hosted elsewhere without the express permission from Elsevier. 2for which the archaeal community was analyzed. Soon after oxygen exposure, the bioaugmented digesters produced 25-60% more methane than nonbioaugmented controls (p < 0.05). One set of digesters produced lingering high propionate concentrations, and bioaugmentation resulted in significantly shorter recovery periods. The second set of digesters did not display lingering propionate, and bioaugmented digesters recovered at the same time as nonbioaugmented controls. The difference in the effect of bioaugmentation on recovery may be due to differences between microbial communities of the digester inocula originally employed. In conclusion, bioaugmentation with an H2-utilizing culture is a potential tool to decrease the recovery period, decrease propionate concentration, and increase biogas production of some anaerobic digesters after a toxic event. Digesters already containing rapidly adaptable microbial communities may not benefit from bioaugmentation, whereas other digesters with poorly adaptable microbial communities may benefit greatly.

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Bioaugmentation

Abstract: Remediation Hierarchy Organisms for Bioaugmentation Improving Organisms for Bioaugmentation Constitutive Degradative Activity Enhanced Transport Energy Enrichment Mixed Cultures and Consortia E… Show more

Cited by 11 publications

References 81 publications

Genome-Guided Characterization of Ochrobactrum sp. POC9 Enhancing Sewage Sludge Utilization—Biotechnological Potential and Biosafety Considerations

Genome-Guided Characterization of Ochrobactrum sp. POC9 Enhancing Sewage Sludge Utilization—Biotechnological Potential and Biosafety Considerations

Relating Anaerobic Digestion Microbial Community and Process Function : Supplementary Issue: Water Microbiology

Bioaugmentation for improved recovery of anaerobic digesters after toxicant exposure

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