Microbial community structure in aerobic and fluffy granules formed in a sequencing batch reactor supplied with 4-chlorophenol at different settling times

Gómez-Acata, Selene; Vital‐Jácome, Miguel; Pérez-Sandoval, Mariana Vivian; Navarro‐Noya, Yendi E.; Thalasso, F.; Luna‐Guido, Marco; Conde-Barajas, Eloy; Dendooven, Luc

doi:10.1016/j.jhazmat.2017.08.073

Cited by 51 publications

(16 citation statements)

References 58 publications

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“…The SBR used and its operation was mostly the same as reported by Gómez-Acata et al (2018). Briefly, the reactor was a glass bubble column with 0.12 m internal diameter, a total volume capacity of nine L and a five L working volume.…”

Section: Methodsmentioning

confidence: 99%

“…The metabolic capacity of bacterial communities was predicted using PICRUSt 1.1.1 software (Langille et al, 2013) and the Kyoto Encyclopedia of Genes and Genomes (KEGG). Details can be found in Gómez-Acata et al (2018). The nearest sequenced taxon index scores of each sample were calculated (Table S1).…”

Section: Methodsmentioning

confidence: 99%

“…In previous studies, a microrespirometric system was used to study the biodegradation 4-chlorophenol by aerobic granules in a SBR. It was found that 4-chlorophenol was removed at 0.9 kg/m 3 of COD per day (Vital-Jácome et al, 2016) and members of Sphingobium , Comamonadaceae and Rhizobiaceae were enriched during its degradation in the aerobic granules (Gómez-Acata et al, 2018). Thus, a better understanding of the community distribution, structure and stability of the aggregates will help to further understand and optimize granule formation in SBR and will help to improve their use in wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

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Microbial community dynamics during aerobic granulation in a sequencing batch reactor (SBR)

Gómez-Basurto

Vital‐Jácome

Gómez-Acata

et al. 2019

PeerJ

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Microorganisms in aerobic granules formed in sequencing batch reactors (SBR) remove contaminants, such as xenobiotics or dyes, from wastewater. The granules, however, are not stable over time, decreasing the removal of the pollutant. A better understanding of the granule formation and the dynamics of the microorganisms involved will help to optimize the removal of contaminants from wastewater in a SBR. Sequencing the 16S rRNA gene and internal transcribed spacer PCR amplicons revealed that during the acclimation phase the relative abundance of Acinetobacter reached 70.8%. At the start of the granulation phase the relative abundance of Agrobacterium reached 35.9% and that of Dipodascus 89.7% during the mature granule phase. Fluffy granules were detected on day 43. The granules with filamentous overgrowth were not stable and they lysed on day 46 resulting in biomass wash-out. It was found that the reactor operation strategy resulted in stable aerobic granules for 46 days. As the reactor operations remained the same from the mature granule phase to the end of the experiment, the disintegration of the granules after day 46 was due to changes in the microbial community structure and not by the reactor operation.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microbial community dynamics during aerobic granulation in a sequencing batch reactor (SBR)

Gómez-Basurto

Vital‐Jácome

Gómez-Acata

et al. 2019

PeerJ

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“…After being acclimated, the dominant microbes for CPs biodegradation are enriched in activated sludge. However, different types of microbes are accumulated in a variety of operational conditions for CPs wastewater treatment (Gómez‐Acata et al ., 2018). In a novel hybrid anaerobic reactor for cometabolic 4‐chlorophenol (4‐CP) and glucose, the dominant genera are identified as Methanobacterium , Clostridium , Pseudomonas and etc.…”

Section: Introductionmentioning

confidence: 99%

Temporal responses of 4‐chlorophenol on the performance and functional genes expression of activated sludge in sequencing batch bioreactor

Zhao

et al. 2020

Water & Environment J

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In this study, a lab-scale sequencing batch bioreactor (SBR) with hydraulic retention time (HRT) of 8 h was established to treat 50 mg/L 4-chlorophenol (4-CP), and the temporal responses of 4-CP on the performance and the expression level of related functional genes in sludge were explored. Results showed that after the SBR was acclimated with the cometabolic carbon sources of 4-CP and methanol, the pollutants were effectively degraded. The pollutants removal was influenced by the polysaccharides and proteins in sludge. The real-time PCR showed that except for the gene p450, the prompt removal of pollutants before 2 h caused the significant upregulation of the other functional genes from the genus Pseudomonas in sludge, while the downregulation occurred from 2 to 8 h with the progressive removal of pollutants in SBR cycle, indicating that the removal of pollutants was closely related to the functional genes expression.

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“…Chlorophenols are important industrial raw materials and are widely used in the production of solvents, dyes, preservatives, herbicides, insecticides and fungicides [1][2][3]. Organic matter containing chlorophenol residues is highly toxic and is resistant to degradation by conventional processes, owing to its benzene ring and chlorine atoms [4,5].…”

Section: Introductionmentioning

confidence: 99%

Visible-Light-Driven Photocatalytic Fuel Cell with an Ag-TiO2 Carbon Foam Anode for Simultaneous 4-Chlorophenol Degradation and Energy Recovery

Deng

et al. 2018

ChemEngineering

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Photocatalytic fuel cells (PFCs) are a sustainable technology with application in waste water treatment, in which energy is obtained from the photocatalytic degradation of organic pollutants. However, the application of PFCs is limited by the photoanode, in particular its low efficiency for treating recalcitrant pollutants. In this study, a double chamber PFC reactor was constructed. Visible-light-driven Ag-TiO 2 photocatalyst supported carbon foam was used as the anode and platinum was used as the cathode. 4-Chlorophenol (4-CP) was used as a model pollutant in the cation chamber to investigate the efficiency of pollutant degradation and power generation. The effects of the electrolyte type and solution pH on the 4-CP degradation and power production were investigated. The results showed that 32.6% of 4-CP was degraded by the PFC in 6 h. Na 2 SO 4 was the optimum electrolyte and had the least side effects on the degradation of 4-CP when compared with NaCl, NaHCO 3 and NaH 2 PO 4. The optimum pH range was 6.4-8.4 when sodium sulfate was used as the electrolyte. The power density was approximately 36.0 mW/m 2 under the above experimental conditions.

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Microbial community structure in aerobic and fluffy granules formed in a sequencing batch reactor supplied with 4-chlorophenol at different settling times

Cited by 51 publications

References 58 publications

Microbial community dynamics during aerobic granulation in a sequencing batch reactor (SBR)

Microbial community dynamics during aerobic granulation in a sequencing batch reactor (SBR)

Temporal responses of 4‐chlorophenol on the performance and functional genes expression of activated sludge in sequencing batch bioreactor

Visible-Light-Driven Photocatalytic Fuel Cell with an Ag-TiO2 Carbon Foam Anode for Simultaneous 4-Chlorophenol Degradation and Energy Recovery

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