Anaerobic biodegradation of cellulosic material: Batch experiments and modelling based on isotopic data and focusing on aceticlastic and non-aceticlastic methanogenesis

Xian, Qiming; Вавилин, В.А.; Mazéas, Laurent; Lemunier, M.; Duquennoi, C.; He, Pinjing; Bouchez, Théodore

doi:10.1016/j.wasman.2008.12.008

Cited by 72 publications

(43 citation statements)

References 22 publications

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“…These seemingly contradicting observations indicate that the electrical circuit and the current generating microorganisms were only able to outcompete methanogenic microorganisms at low organic carbon concentrations (electron-donor) and high electron acceptor concentrations (anode in closed circuit). This concept is supported by the fact that the affinity (Ks) of Geobacter sulfurreducens (a known current generating microorganism) for acetate can be as low as 10 µM whereas the lowest affinity for acetate reported for Methanosaetaceae is 160 µM (Esteve-Núñez et al 2005;Qu et al 2009). For Methanosarcinaceae this value is even higher, 3 mM (Qu et al 2009).…”

Section: Current Producing Metabolism Precedes Methanogenic Metabolismmentioning

confidence: 99%

“…This concept is supported by the fact that the affinity (Ks) of Geobacter sulfurreducens (a known current generating microorganism) for acetate can be as low as 10 µM whereas the lowest affinity for acetate reported for Methanosaetaceae is 160 µM (Esteve-Núñez et al 2005;Qu et al 2009). For Methanosarcinaceae this value is even higher, 3 mM (Qu et al 2009). …”

Section: Current Producing Metabolism Precedes Methanogenic Metabolismmentioning

confidence: 99%

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Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell

Arends

Speeckaert

Blondeel

et al. 2013

Appl Microbiol Biotechnol

114

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Methane (CH 4 ) release from wetlands is an important source of greenhouse gas emissions. Gas exchange occurs mainly through the aerenchyma of plants and production of greenhouse gases is heavily dependent on rhizosphere biogeochemical conditions (i.e. substrate availability and redox potential). It is hypothesized that by introducing a biocatalyzed anode electrode in the rhizosphere of wetland plants, a competition for carbon and electrons can be invoked between electrical current generating bacteria and methanogenic archaea. The anode electrode is part of a bioelectrochemical system (BES) capable of harvesting electrical current from microbial metabolism. In this work, the anode of a BES was introduced in the rhizosphere of rice plants (Oryza sativa) and the impact on methane emissions was monitored.Microbial current generation was able to outcompete methanogenic processes when the bulk matrix contained low concentrations of organic carbon, provided that the electrical circuit with the effective electro-active microorganisms was in place. When interrupting the electrical circuit or supplying an excess of organic carbon, methanogenic metabolism was able to outcompete current generating metabolism. The qPCR results showed hydrogenotrophic methanogens were the most abundant methanogenic group present, while mixotrophic or acetoclastic methanogens were hardly detected in the bulk rhizosphere or on the electrodes. Competition for electron donor and acceptor were likely the main drivers to lower methane emissions. Overall, electrical current generation with BESs is an interesting option to control CH 4 emissions from wetlands but needs to be applied in combination with other mitigation strategies to be successful and feasible in practice.

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Section: Current Producing Metabolism Precedes Methanogenic Metabolismmentioning

confidence: 99%

Section: Current Producing Metabolism Precedes Methanogenic Metabolismmentioning

confidence: 99%

Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell

Arends

Speeckaert

Blondeel

et al. 2013

Appl Microbiol Biotechnol

114

View full text Add to dashboard Cite

show abstract

“…No positive control was used as it has been shown that inoculum of this type can successfully degrade lignocellulosic substrates (Banks and Humphreys, 1998;Siegert and Banks, 2005;Qu et al, 2009;Jensen et al, 2009). Each digester received 1400 g of the sieved inoculum, which was then left for 24 hours at 35 o C to reduce the residual readily available organic matter.…”

Section: Experimental Procedurementioning

confidence: 99%

Biochemical methane potential of winter wheat (Triticum aestivum L.): Influence of growth stage and storage practice

Rincón

Banks

Heaven

2010

Bioresource Technology

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The effect of growth stage at harvest and of storage practice on the biochemical methane potential (BMP) of winter wheat was investigated using batch-fed stirred mesophilic digesters. The wheat used was a single variety sown at the same time (autumn) and harvested at 3 different stages in its growth: medium milk (A); soft dough (B) and Caryopsis (C). Wheats (A and B) were ensiled whilst the later harvested material (C) with a higher dry matter content was treated by the alkalage process. The BMP values expressed on the basis of volatile solids (VS) were 0.360±0.030, 0.346±0.006 and 0.311±0.016 l CH 4 g -1 VS added for A, B and C respectively. A simple first order kinetic model gave only a poor fit to the experimental data but a close match was obtained using a modified first order pseudo-parallel model which explains the methane production curve on the basis of differences in biodegradability of the plant material.

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“…Chen & Hashimoto, 1980;Kiely et al, 1997;Kalfas et al, 2006;Sosnowski et al, 2007;Boubaker & ridha, 2008;Liu et al, 2008;Vavilin et al, 2008;Qu et al, 2009) or waste water treatment (e.g. Batstone et al, 2002;Feng et al, 2006;Tomei et al, 2008;Boubaker & ridha, 2008), not so many results can be found on modeling of agricultural biogas production (Hill & Barth, 1977;Simeonov et al, 1996;Angelidaki et al, 1999) and only a few consider the digestion of energy crops (Wichern et al, 2008(Wichern et al, & 2009Beierlein et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Kinetic Considerations on Thermophilic Digestion of Maize Silage at Different Feeding Modes

Golkowska

Sibisi-Beierlein

Greger

2012

Chemie Ingenieur Technik

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Digestion of maize silage in batch, semi‐batch and continuous mode was investigated under similar experimental conditions with the aim to compare the degradation kinetics. The modeling with the 1st order equation shows that despite the ensiling pre‐treatment the disintegration/hydrolysis step determines the total degradation rate of the substrate. The results confirmed an extremely high adaptation capability of anaerobic biocenosis to increased feeding frequency, rather than to higher but less frequent loadings. 2 – 3 times higher degradation rates were observed for tripled feeding frequency. On the other hand, an increase in organic loading within the same feeding mode always resulted in reduction of digestion rate.

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Anaerobic biodegradation of cellulosic material: Batch experiments and modelling based on isotopic data and focusing on aceticlastic and non-aceticlastic methanogenesis

Cited by 72 publications

References 22 publications

Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell

Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell

Biochemical methane potential of winter wheat (Triticum aestivum L.): Influence of growth stage and storage practice

Kinetic Considerations on Thermophilic Digestion of Maize Silage at Different Feeding Modes

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