Crude oil degradation by bacterial consortia under four different redox and temperature conditions

Xiong, Shunzi; Li, Xia; Chen, Jianfa; Zhao, Liping; Zhang, Hui; Zhang, Xiaojun

doi:10.1007/s00253-014-6042-7

Cited by 15 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within these genera, Methyloversatilis is the only microorganism capable of metabolizing phenol (Smalley et al, 2015). Melioribacter and Spirochaeta on the other hand, were reported to be present in methanogenic systems treating aromatic compounds but their effective role in phenol degradation is not clear (Li et al, 2014;Xiong et al, 2015). Within all archaeal members, Methanobrevibacter was the only genus that had its maximum abundance at this stage indicating that this hydrogenotrophic methanogen can growth better than other methanogens under this environmental condition.…”

Section: Structural Changes At Genus Level During Asbr Operationmentioning

confidence: 99%

Correlations between microbial population dynamics, bamA gene abundance and performance of anaerobic sequencing batch reactor (ASBR) treating increasing concentrations of phenol

Franchi

Cabrol

Chamy

et al. 2020

Journal of Biotechnology

View full text Add to dashboard Cite

The relevant microorganims driving efficiency changes in anaerobic digestion of phenol remains uncertain. In this study correlations were established between microbial population and the process performance in an anaerobic sequencing batch reactor (ASBR) treating increasing concentrations of phenol (from 120 to 1200 mg L −1 ). Sludge samples were taken at different operational stages and microbial community dynamics was analyzed by 16S rRNA sequencing. In addition, bamA gene was quantified in order to evaluate the dynamics of anaerobic aromatic degraders. The microbial community was dominated by Anaerolineae, Bacteroidia, Clostridia, and Methanobacteria classes. Correlation analysis between bamA gene copy number and phenol concentration were highly significant, suggesting that the increase of aromatic degraders targeted by bamA assay was due to an increase in the amount of phenol degraded over time. The incremental phenol concentration affected hydrogenotrophic archaea triggering a linear decrease of Methanobacterium and the growth of Methanobrevibacter. The best performance in the reactor was at 800 mg L −1 of phenol. At this stage, the highest relative abundances of Syntrophorhabdus, Chloroflexus, Smithella, Methanolinea and Methanosaeta were observed and correlated positively with initial degradation rate, suggesting that these microorganisms are relevant players to maintain a good performance in the ASBR.

show abstract

Section: Structural Changes At Genus Level During Asbr Operationmentioning

confidence: 99%

Correlations between microbial population dynamics, bamA gene abundance and performance of anaerobic sequencing batch reactor (ASBR) treating increasing concentrations of phenol

Franchi

Cabrol

Chamy

et al. 2020

Journal of Biotechnology

View full text Add to dashboard Cite

show abstract

“…10 Few researchers simultaneously focused on the biodegrading efficiency of multiple contaminants by the same microorganism. 11,12 Furthermore, the application of bioremediation to marine oil spills has traditionally been thought to be limited by the ability of microbes to access nutrients such as nitrogen and phosphorus, as well as the dilution of nutrients and microorganism concentration, higher salinity and low temperature in the marine environment. 13 The immobilization method has been proposed to overcome these problems, in which the cell (microorganism) or enzyme is immobilized in a limited space by chemical or physical methods, keeping it active and allowing its reuse.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of different petroleum hydrocarbons by free and immobilized microbial consortia

Bao

et al. 2015

Environ. Sci.: Processes Impacts

View full text Add to dashboard Cite

The efficiencies of free and immobilized microbial consortia in the degradation of different types of petroleum hydrocarbons were investigated. In this study, the biodegradation rates of naphthalene, phenanthrene, pyrene and crude oil reached about 80%, 30%, 56% and 48% under the optimum environmental conditions of free microbial consortia after 7 d. We evaluated five unique co-metabolic substances with petroleum hydrocarbons, α-lactose was the best co-metabolic substance among glucose, α-lactose, soluble starch, yeast powder and urea. The orthogonal biodegradation analysis results showed that semi-coke was the best immobilized carrier followed by walnut shell and activated carbon. Meanwhile, the significance of various factors that contribute to the biodegradation of semi-coke immobilized microbial consortia followed the order of: α-lactose > semi-coke > sodium alginate > CaCl2. Moreover, the degradation rate of the immobilized microbial consortium (47%) was higher than that of a free microbial consortium (26%) under environmental conditions such as the crude oil concentration of 3 g L(-1), NaCl concentration of 20 g L(-1), pH at 7.2-7.4 and temperature of 25 °C after 5 d. SEM and FTIR analyses revealed that the structure of semi-coke became more porous and easily adhered to the microbial consortium; the functional groups (e.g., hydroxy and phosphate) were identified in the microbial consortium and were changed by immobilization. This study demonstrated that the ability of microbial adaptation to the environment can be improved by immobilization which expands the application fields of microbial remediation.

show abstract

“…These selected ASVs are related to Thalassospira spp., Spirochaeta litoralis , Arcobacter spp., and Vibrio spp. It has been described that fungi produce small signaling molecules ( 67 ), including chemo-attractive compounds ( 68 ), resulting in the selection of bacteria able to be translocated. Also, antibiotic-based mechanisms have been described for the selection of insensitive or antibiotic-resistant bacteria by fungi ( 19 ).…”

Section: Resultsmentioning

confidence: 99%

Marine Fungi Select and Transport Aerobic and Anaerobic Bacterial Populations from Polycyclic Aromatic Hydrocarbon-Contaminated Sediments

Álvarez-Barragán

Cravo‐Laureau

Xiong

et al. 2023

mBio

View full text Add to dashboard Cite

The study provides advances for understanding fungal-bacterial relationships, particularly on the selection and dispersion of bacterial communities by fungi, which are crucial for the organization of microbial communities and their functioning in coastal PAH-contaminated sediments. The transportation of bacteria via fungal hyphae (fungal highway) results in bacterial selection; in particular, fungal hyphae offer adequate conditions for the transport of both aerobic and anaerobic bacteria through hydrophobic patches for the colonization of novel niches.

show abstract

Crude oil degradation by bacterial consortia under four different redox and temperature conditions

Cited by 15 publications

References 41 publications

Correlations between microbial population dynamics, bamA gene abundance and performance of anaerobic sequencing batch reactor (ASBR) treating increasing concentrations of phenol

Correlations between microbial population dynamics, bamA gene abundance and performance of anaerobic sequencing batch reactor (ASBR) treating increasing concentrations of phenol

Biodegradation of different petroleum hydrocarbons by free and immobilized microbial consortia

Marine Fungi Select and Transport Aerobic and Anaerobic Bacterial Populations from Polycyclic Aromatic Hydrocarbon-Contaminated Sediments

Contact Info

Product

Resources

About