Methanogenic population dynamics during start-up of anaerobic digesters treating municipal solid waste and biosolids

Griffin, Matt E.; McMahon, Katherine D.; Mackie, Roderick I.; Raskin, Lutgarde

doi:10.1002/(sici)1097-0290(19980205)57:3<342::aid-bit11>3.0.co;2-i

Cited by 333 publications

(235 citation statements)

References 51 publications

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“…Methanosarcina have been observed in systems experiencing poor performance and may be indicative of operational instability and acetate accumulation (McMahon et al, 2004). Methanosaeta have been shown to out-compete Methanosarcina under conditions of (i) low residual acetate concentration (Griffin et al, 1998) and (ii) low temperature (Chin et al, 1999). It is likely that, under steady operational conditions, the low prevailing residual acetate concentrations (typically o30 mg l À1 ; VFA data not shown), coupled with the reduced operational temperature, contributed to the suppression of Methanosarcina by Methanosaeta groups for the majority of the trial.…”

Section: Discussionmentioning

confidence: 99%

Psychrophilic methanogenic community development during long-term cultivation of anaerobic granular biofilms

et al. 2009

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Granular biomass was temporally sampled from a cold (4-15 1C) anaerobic bioreactor, which was inoculated with mesophilic biomass and used to treat industrial wastewater in a long-term (3.4 year) study. Data from 16S rRNA gene clone libraries, quantitative PCR and terminal restriction fragment length polymorphism analyses indicated that microbial community structure was dynamic, with shifts in the archaeal and bacterial communities' structures observed following start-up and during temperature decreases from 15 to 9.5 1C (phase 1). Specifically, the relative abundance of architecturally important Methanosaeta-like (acetoclastic) methanogens decreased, which was concomitant with granule disintegration and the development of a putatively psychrophilic hydrogenotrophic methanogenic community. Genetic fingerprinting suggested the development of a psychroactive methanogenic community between 4 and 10 1C (phase 2), which was dominated by acetogenic bacteria and Methanocorpusculum-like (hydrogenotrophic) methanogens. High levels of Methanosaeta-like acetoclastic methanogens and granular biofilm integrity were maintained during phase 2. Overall, decreasing temperature resulted in distinctly altered microbial community structure during phase 1, and the development of a less dynamic psychroactive methanogenic consortium during phase 2. Moreover, psychrophilic H 2 -oxidizing methanogens emerged as important members of the psychroactive consortia after 41200 days of low-temperature cultivation. The data suggest that prolonged psychrophilic cultivation of mesophilic biomass can establish a well-functioning psychroactive methanogenic consortium, thus highlighting the potential of low-temperature anaerobic digestion technology.

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Section: Discussionmentioning

confidence: 99%

Psychrophilic methanogenic community development during long-term cultivation of anaerobic granular biofilms

et al. 2009

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“…Perhaps a consortium adapted to operate at 37ºC ceases to function effectively at 46ºC while a consortium adapted to operate at 55ºC ceases to operate effectively at 40ºC. Griffin et al (1998) reported that the methanogenic bacteria are the limiting microbial group during the period of adaptation to thermophilic conditions. Boušková et al (2005) also observed a strong disturbance when the reactor temperature was adjusted from 42ºC to 47ºC.…”

Section: Effect Of Temperature Shifts On the Performance Of The Reactorsmentioning

confidence: 99%

Effect of temperature on the anaerobic digestion of palm oil mill effluent

Choorit¹,

Wisarnwan²

2007

Electron. J. Biotechnol.

105

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“…Currently, thermophilic anaerobic digestion is of wide interest as a method to treat organic wastes due to its potential to increase volumetric biogas production (Griffin et al, 1998;Ahn and Forster, 2000) and facilitate pathogen reduction (Dugba and Zhang, 1999) when compared to mesophilic anaerobic digestion. Despite these advantages, full-scale thermophilic anaerobic digestion has had limited applications, confined to only some regions such as Europe (De Baere, 2000), due to the difficulties in control and start-up processes.…”

Section: Introductionmentioning

confidence: 99%

Rapid start-up of thermophilic anaerobic digestion with the turf fraction of MSW as inoculum

Suwannoppadol

Cord‐Ruwisch

2011

Bioresource Technology

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Stirring of the culture was not conducive for successful start-up as it resulted specifically in propionate accumulation.

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Methanogenic population dynamics during start-up of anaerobic digesters treating municipal solid waste and biosolids

Cited by 333 publications

References 51 publications

Psychrophilic methanogenic community development during long-term cultivation of anaerobic granular biofilms

Psychrophilic methanogenic community development during long-term cultivation of anaerobic granular biofilms

Effect of temperature on the anaerobic digestion of palm oil mill effluent

Rapid start-up of thermophilic anaerobic digestion with the turf fraction of MSW as inoculum

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