Analysis of microbial communities developed on the fouling layers of a membrane-coupled anaerobic bioreactor applied to wastewater treatment

Calderón, Kadiya; Rodelas, B.; Cabirol, Nathalie; González‐López, Jesús; Noyola, A.

doi:10.1016/j.biortech.2011.01.007

Cited by 101 publications

(50 citation statements)

References 33 publications

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“…The most abundant biofilm associated archaea included the Methanomicrobia, Methanopyri, Thermoplasmata and Thermococci and Thermoprotei. This was consistent with the previous studies (Calderón et al, 2011;Al Ashhab et al, 2014), indicating that these organisms may be the universal biofilm associated archaea in the membrane-based water purification processes. In comparison with the sludge community, the archaeal communities in biofilms formed a distinct community cluster at low TMP (Fig.…”

Section: Discussionsupporting

confidence: 93%

“…Besides, the Thermoprotei, Methanopyri, and Thermoplasmata were prevailing in the membrane biofilms in the reverse osmosis membrane system (Al Ashhab et al, 2014). In a pilot-scale membrane-coupled upflow anaerobic sludge blanket bioreactor, the methanogenic archaea, e.g., Methanosarcinales and Methanospirillaceae, persistently composed of the biofouling microbial community, even the membranes were cleaned by the chemical reagents (Calderón et al, 2011). Despite these reports, there is still very little data on the association of archaea with biofilm formation on MBR membranes and their impact on MBR performance (Calderón et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Characterization of the archaeal community fouling a membrane bioreactor

Luo

Zhang

Tan

et al. 2015

Journal of Environmental Sciences

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Biofilm formation, one of the primary causes of biofouling, results in reduced membrane flux or increased transmembrane pressure and thus represents a major impediment to the wider implementation of membrane bioreactor (MBR) technologies for water purification. Most studies have focused on the role of bacteria in membrane fouling as they are the most dominant and best studied organisms present in the MBR. In contrast, there is limited information on the role of the archaeal community in biofilm formation in MBRs. This study investigated the composition of the archaeal community during the process of biofouling in an MBR. The archaeal community was observed to have lower richness and diversity in the biofilm than the sludge during the establishment of biofilms at low transmembrane pressure (TMP). Clustering of the communities based on the Bray-Curtis similarity matrix indicated that a subset of the sludge archaeal community formed the initial biofilms. The archaeal community in the biofilm was mainly composed of Thermoprotei, Thermoplasmata, Thermococci, Methanopyri, Methanomicrobia and Halobacteria. Among them, the Thermoprotei and Thermoplasmata were present at higher relative proportions in the biofilms than they were in the sludge. Additionally, the Thermoprotei, Thermoplasmata and Thermococci were the dominant organisms detected in the initial biofilms at low TMP, while as the TMP increased, the Methanopyri, Methanomicrobia, Aciduliprofundum and Halobacteria were present at higher abundances in the biofilms at high TMP.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Characterization of the archaeal community fouling a membrane bioreactor

Luo

Zhang

Tan

et al. 2015

Journal of Environmental Sciences

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“…Polymerase chain reaction (PCR) amplification was performed in two steps, following other research on TGGE and DGGE fingerprinting [4,9]. One microliter (2-5 ng) of the DNA extracted was used as a template for all the PCRs.…”

Section: Determination Of Ammonium Nitrite and Nitratementioning

confidence: 99%

“…Culture-dependent methods have sometimes been regarded as inadequate for the analysis of microbial communities in natural environments because of the high numbers of unculturable bacteria. Furthermore, in recent years, molecular methods, based on the sequencing of PCR-amplified the partial 16S rRNA genes from DNA extracted from environmental samples, have been widely used to reveal intrinsic genetic biodiversity [4]. In particular, denaturing gradient gel electrophoresis (DGGE) and temperature gradient gel electrophoresis (TGGE) approaches yield large quantities of data regarding the diversity of microorganisms in their natural habitats.…”

Section: Introductionmentioning

confidence: 99%

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Biological and technical study of a partial-SHARON reactor at laboratory scale: effect of hydraulic retention time

González‐Martínez

Calderón

Albuquerque

et al. 2012

Bioprocess Biosyst Eng

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Methanocalculus

Fardeau¹,

Cayol²,

Ollivier³

2019

Bergey's Manual of Systematics of Archaea and Bacteria

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Me.tha.no.cal'cu.lus. N.L. neut. n. methanum methane; N.L. masc. n. calculus pebble; gravel; N.L. masc. n. Methanocalculus a methane‐producing pebble‐shaped bacterium. Euryarchaeota / Methanomicrobiales / Methanomicrobiales / Methanocalculaceae / Methanocalculus The genus Methanocalculus comprises six species with validly published names: Methanocalculus halotolerans, Methanocalculus pumilus, Methanocalculus taiwanensis , Methanocalculus chunghsingensis , Methanocalculus natronophilus , and Methanocalculus alkaliphilus . The members of the genus Methanocalculus belong to the Methanocalculaceae family. They have less than 90% 16S ribosomal RNA sequence identity to their closest phylogenetic relatives, Methanoculleus and Methanocorpusculum species. Methanocalculus spp. use only hydrogen and formate as electron donors for producing methane and require acetate as a carbon source. They are mesophilic and have a G + C content in the DNA ranging from 50.2 to 55.0 mol%. Some species tolerate NaCl at a concentration of 125 g/l (e.g., M. halotolerans ). They inhabit a wide range of environments including extreme ones (e.g., saline oil reservoirs and soda lakes) as confirmed by culture‐dependent and ‐independent techniques. While most Methanocalculus spp. are neutrophilic, two species, Methanocalculus natronophilus and M. alkaliphilus , are strictly alkaliphilic. DNA G + C content (mol%) : 50–55. Type species : Methanocalculus halotolerans Ollivier, Fardeau, Cayol, Magot, Patel, Prensier et al., 1998.

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Analysis of microbial communities developed on the fouling layers of a membrane-coupled anaerobic bioreactor applied to wastewater treatment

Cited by 101 publications

References 33 publications

Characterization of the archaeal community fouling a membrane bioreactor

Characterization of the archaeal community fouling a membrane bioreactor

Biological and technical study of a partial-SHARON reactor at laboratory scale: effect of hydraulic retention time

Methanocalculus

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