Bioaugmentation

Gough, Heidi L.; Nielsen, Jeppe Lund

doi:10.1007/8623_2016_205

Cited by 2 publications

(3 citation statements)

References 51 publications

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“…However, increases in the hydrocarbon degradation rates have also been reported in other sites over short periods of time using bioaugmentation and biostimulation strategies rather than bioattenuation (Yu et al, 2005; Meyer et al, 2014; Müeller et al, 2017). Differences in the obtained results may be explained by studies describing limitations with respect to the biostimulation and bioaugmentation strategies (Boopathy, 2000; Bouchez et al, 2000; Gough and Nielsen, 2016). Regarding biostimulation, the primary challenges are to identify indigenous microbial communities that are capable of degrading target contaminants and to deliver additives in a manner that allows them to be readily available to microorganisms (Boopathy, 2000; Adams et al, 2015).…”

Section: Discussionmentioning

confidence: 98%

“…Moreover, at some sites and under some conditions, the addition of nutrients may also promote the growth of microorganisms that can outcompete the native contaminant-degrading organisms (Adams et al, 2015). With respect to the bioaugmentation strategy, the ability of microbes to survive over time depends on multiples variables, such as their attachment to surfaces, substrate availability, predator/prey interactions, competition, and other components that can be associated with the site, environmental conditions and the selected microbial consortia (Bouchez et al, 2000; Gough and Nielsen, 2016). Additionally, it has been suggested that the capacity of soil microbial communities to degrade hydrocarbons depends on their previous exposure to the contaminant (Sánchez et al, 2004; Johnsen and Karlson, 2005).…”

Section: Discussionmentioning

confidence: 99%

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Tracking Mangrove Oil Bioremediation Approaches and Bacterial Diversity at Different Depths in an in situ Mesocosms System

et al. 2019

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In this study, oil spills were simulated in field-based mangrove mesocosms to compare the efficiency of bioremediation strategies and to characterize the presence of the alkB, ndo, assA, and bssA genes and the ecological structures of microbial communities in mangrove sediments at two different depths, (D1) 1–10 cm and (D2) 25–35 cm. The results indicated that the hydrocarbon degradation efficiency was higher in superficial sediment layers, although no differences in the hydrocarbon degradation rates or in the abundances of the alkB and ndo genes were detected among the tested bioremediation strategies at this depth. Samples from the deeper layer exhibited higher abundances of the analyzed genes, except for assA and bssA, which were not detected in our samples. For all of the treatments and depths, the most abundant phyla were Proteobacteria, Firmicutes and Bacteroidetes, with Gammaproteobacteria, Flavobacteriales and Clostridiales being the most common classes. The indicator species analysis (ISA) results showed strong distinctions among microbial taxa in response to different treatments and in the two collection depths. Our results indicated a high efficiency of the monitored natural attenuation (MNA) for oil consumption in the tested mangrove sediments, revealing the potential of this strategy for environmental decontamination and suggesting that environmental and ecological factors may select for specific bacterial populations in distinct niches.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Tracking Mangrove Oil Bioremediation Approaches and Bacterial Diversity at Different Depths in an in situ Mesocosms System

et al. 2019

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“…Bioaugmentation can be delivered via several methods including direct injection of micro-organisms, construction of biogranulation (i.e. microbial aggregation), biocurtains (biobarriers), or gene-mediated methods (Gough and Nielsen 2016 ). By utilizing the natural adaptability and abilities of acidophiles to survive in acidic environments, bioaugmentation can be designed for remediation of acidic mine drainage (Anekwe and Isa 2023 ), removal of metal contaminants from acidic sites (Ayangbenro et al 2018 ), treatment of acidic industrial wastewater (e.g.…”

Section: Harnessing Microbial Activity In Contaminated Acidic Environ...mentioning

confidence: 99%

Exploitation of microbial activities at low pH to enhance planetary health

Atasoy,

Álvarez Ordóñez,

Cenian

et al. 2023

FEMS Microbiology Reviews

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Awareness is growing that human health cannot be considered in isolation but is inextricably woven with the health of the environment in which we live. It is however under-recognised that the sustainability of human activities strongly relies on preserving the equilibrium of the microbial communities living in/on/around us. Microbial metabolic activities are instrumental for production, functionalization, processing and preservation of food. For circular economy, microbial metabolism would be exploited to produce building blocks for the chemical industry, to achieve effective crop protection, agri-food waste revalorization or biofuel production, as well as in bioremediation and bioaugmentation of contaminated areas. Low pH is undoubtedly a key physical-chemical parameter that needs to be considered for exploiting the powerful microbial metabolic arsenal. Deviation from optimal pH conditions has profound effects on shaping the microbial communities responsible for carrying out essential processes. Furthermore, novel strategies to combat contaminations and infections by pathogens rely on microbial-derived acidic molecules that suppress/inhibit their growth. Herein, we present the state-of-the-art of the knowledge on the impact of acidic pH in many applied areas and how this knowledge can guide us to use the immense arsenal of microbial metabolic activities for their more impactful exploitation in a Planetary Health perspective.

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Bioaugmentation

Cited by 2 publications

References 51 publications

Tracking Mangrove Oil Bioremediation Approaches and Bacterial Diversity at Different Depths in an in situ Mesocosms System

Tracking Mangrove Oil Bioremediation Approaches and Bacterial Diversity at Different Depths in an in situ Mesocosms System

Exploitation of microbial activities at low pH to enhance planetary health

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