Kinetic modelling and microbial community assessment of anaerobic biphasic fixed film bioreactor treating distillery spent wash

Acharya, Bhavik K.; Pathak, Hilor; Mohana, Sarayu; Shouche, Yogesh S.; Singh, Vivek; Madamwar, Datta

doi:10.1016/j.watres.2011.05.048

Cited by 58 publications

(20 citation statements)

References 45 publications

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“…More acidic or basic mixtures will ferment at a lower speed. Because the high amounts of dissolved CO2 can affect the pH (Dobre et al, 2014).Accumulation of volatile fatty acids (VFA) lead to imbalance in an anaerobic digester, which causes harp decrease in the pH (Acharya et al, 2011 andZhang et al, 2015).…”

Section: Discussion:-mentioning

confidence: 99%

Biomethanization of Olive Mill Solid Waste With Turkey Manure at Mesophilic Conditions.

bashiti.¹,

Jouda.²,

Alajouz.³

2017

IJAR

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Section: Discussion:-mentioning

confidence: 99%

Biomethanization of Olive Mill Solid Waste With Turkey Manure at Mesophilic Conditions.

bashiti.¹,

Jouda.²,

Alajouz.³

2017

IJAR

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“…Some studies have reported NMA as the predominant archaeal populations in anaerobic digestion, representing 20-50 % of the archaeal abundance (Acharya et al 2011;Collins et al 2005;Enright et al 2009;Schauer-Gimenez et al 2010;Siggins et al 2011). Maintaining such high levels of population abundance would require a major shift in the carbon and energy fluxes toward NMA, which would be quite different from the anaerobic digesters examined in this study.…”

Section: Discussionmentioning

confidence: 99%

“…historically along with Euryarchaeota constituted the domain Archaea. These non-methanogen archaeal populations, referred to as BNMA^hereafter, have been reported as the predominant archaeal populations in several studies of anaerobic digestion, representing 20-50 % of the archaeal community (Acharya et al 2011;Collins et al 2005;Enright et al 2009;Schauer-Gimenez et al 2010;Siggins et al 2011), suggesting the potential significance of these microorganisms in anaerobic decomposition of organic materials.…”

Section: Introductionmentioning

confidence: 99%

“…While some have pointed to the potential linkage between the NMA populations and specific groups of methanogens in anaerobic digestion (Collins et al 2005;Enright et al 2009), other studies of marine sediments have suggested the involvement of related archaeal populations in protein mineralization (Lloyd et al 2013) or aromatics degradation (Meng et al 2014). It should be noted that NMA have been identified as the dominant populations in anaerobic digestion processes in a number of studies (Acharya et al 2011;Collins et al 2005;Enright et al 2009;Schauer-Gimenez et al 2010;Siggins et al 2011). For example, NMA populations represented up to 50 % of archaea and 25 % of the total microbiota in the anaerobic digesters surveyed in a previous study (Collins et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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Distinctive non-methanogen archaeal populations in anaerobic digestion

Chen

2015

Appl Microbiol Biotechnol

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Methanogens define the archaeal communities involved in anaerobic digestion. Recently, non-methanogen archaeal populations have been unexpectedly identified in anaerobic digestion processes. To gain insight into the ecophysiology of these uncharacterized archaeal populations, for the first time, a phylogenetic analysis was performed on a collection of non-methanogen archaeal 16S rRNA gene sequences from anaerobic digesters of broad geographic distribution, revealing a distinct clade formed by these sequences in subgroup 6 of the Miscellaneous Crenarchaeotal Group in the newly proposed archaeal phylum Bathyarchaeota. This exclusive phylogenetic assemblage enabled the development of a real-time quantitative PCR (qPCR) assay specifically targeting these non-methanogen archaeal populations in anaerobic digestion. Application of the qPCR assay in continuous anaerobic digesters indicated that these archaeal populations were minor constituents of the archaeal communities, and the abundance of these populations remained relatively constant irrespective of process perturbations. Analysis of the archaeal populations in methanogenic communities further revealed the co-occurrence of these non-methanogen archaea with acetoclastic methanogens. Nevertheless, the low abundance of non-methanogen archaea as compared with acetoclastic methanogens suggests that the non-methanogen archaeal populations were not major players in animal waste-fed methanogenic processes investigated in this study and the functions of these archaeal populations remain to be identified.

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“…A simple mathematical model that defines some of the conditions that describe the anaerobic treatment process is a generally accepted approach in defining the specific parameters for efficient system performance. Thus, models based on process kinetics can be used to understand the underlying biological and transport mechanisms within the reactor [3], thus, giving more useful information on the state of the reactor and any impending failure.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Digestion Model to Enhance Treatment of Brewery Wastewater for Biogas Production Using UASB Reactor

Enitan

Adeyemo

Swalaha

et al. 2015

Environ Model Assess

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Biogas produced from an upflow anaerobic sludge blanket (UASB) reactor is a clean and an environmentally friendly by-product that could be used to meet partial energy needs. In this study, a modified methane generation model (MMGM) was developed on the basis of mass balance principles to predict and increase methane production rate in a UASB reactor during anaerobic fermentation of brewery wastewater. Model coefficients were determined using the data collected from a full-scale reactor. The results showed that the composition of wastewater and operational conditions of the reactor strongly influence the kinetics of the digestion process. Simulation of the reactor process using the model was used to predict the effect of organic loading rate and temperature on methane production with an optimum methane production at 29°C and 8.26 g COD/L/day. Methane production rate increased from 0.29 to 1.46 L CH 4 /g COD, when the loading rate was increased from 2.0 to 8.26 g COD/L/day. The results showed the applicability of MMGM to predict usable methane component of biogas produced during anaerobic digestion of brewery wastewater. This study would help industries to predict and increase the generation of renewable energy by improving methane production from a UASB reactor. To the best of our knowledge, MMGM is the first reported developed model that could serve as a predictive tool for brewery wastewater treatment plant available in the literature.

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Kinetic modelling and microbial community assessment of anaerobic biphasic fixed film bioreactor treating distillery spent wash

Cited by 58 publications

References 45 publications

Biomethanization of Olive Mill Solid Waste With Turkey Manure at Mesophilic Conditions.

Biomethanization of Olive Mill Solid Waste With Turkey Manure at Mesophilic Conditions.

Distinctive non-methanogen archaeal populations in anaerobic digestion

Anaerobic Digestion Model to Enhance Treatment of Brewery Wastewater for Biogas Production Using UASB Reactor

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