An analysis of single and two stage, mesophilic and thermophilic high rate systems for anaerobic digestion of corn stalk

Meng, Yonggang; Jost, Carsten; Mumme, Jan; Wang, Kaijun; Linke, Bernd

doi:10.1016/j.cej.2015.11.072

Cited by 28 publications

(8 citation statements)

References 29 publications

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“…In addition, there were no statistical differences in the k H at I/S of 2:1 and 1:1, remaining around 0.10–0.15 1/d, which concurs with typical values obtained in energy crops (Meng et al, 2016 ). The I/S of 1:2 considerably decreased the k H values, which may be due to biomass transfer problems due to bad mixing or inhibition by organic acids accumulation, as has been claimed previously in BMP standardization procedures (Holliger et al, 2016 ).…”

Section: Resultssupporting

confidence: 90%

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Resource Recovery Potential From Lignocellulosic Feedstock Upon Lysis With Ionic Liquids

Padrino

Lara‐Serrano

Morales‐delaRosa

et al. 2018

Front. Bioeng. Biotechnol.

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Lignocellulosic residues from energy crops offer a high potential to recover bioproducts and biofuels that can be used as raw matter for agriculture activities within a circular economy framework. Anaerobic digestion (AD) is a well-established driver to convert these residues into energy and bioproducts. However, AD of lignocellulosic matter is slow and yields low methane potential, and therefore several pre-treatment methods have been proposed to increase the energy yield of this process. Hereby, we have assessed the pre-treatment of lignocellulosic biomass (barley straw) with the ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate and its effect on the biochemical methane potential (BMP). The BMP of the residue was evaluated at different inoculum to substrate (I/S) ratios and working under meso and thermophilic conditions. Solids destruction upon AD is highly enhanced by the IL-pretreatment. This also resulted in a higher BMP, both in mesophilic as well as thermophilic conditions. At the optimum I/S ratio of 2:1 (dried weight, dw), the BMP of the IL-pre-treated feedstock increased 28 and 80% for 35 days of thermophilic and mesophilic AD, respectively, as compared to the fresh feedstock, achieving values of 364 and 412 LCH4/kgTS. We also explored the effect of this pretreatment on the phosphorus recovery potential from the digestate upon release from the AD process. Thermophilic anaerobic digestion of IL-pre-treated biomass provided the highest P recovery potential from lignocellulosic residues (close to 100% of the theoretical P content of the lignocellulosic feedstock). Therefore, the pretreatment of lignocellulosic feedstock with IL before AD is a promising platform to obtain bioenergy and recover P to be regained for the agriculture sector.

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Section: Resultssupporting

confidence: 90%

“…The kinetic analysis confirmed that the IL treatment only increased slightly the methane potential in thermophilic conditions (Figure 6A ). A B 0 value of 379 ± 16 LCH 4 /kgTS for a I/S of 2:1 was obtained after IL pre-treatment, which is higher than other values obtained for energy crops at thermophilic conditions (Meng et al, 2016 ).…”

Section: Resultscontrasting

confidence: 54%

Resource Recovery Potential From Lignocellulosic Feedstock Upon Lysis With Ionic Liquids

Padrino

Lara‐Serrano

Morales‐delaRosa

et al. 2018

Front. Bioeng. Biotechnol.

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“…This resulted in faster methane production by 40% compared to the system without recirculation. Application of an anaerobic filter on digestion of corn stalk using an upflow anaerobic solid‐state (UASS) at different organic loading rates increased the methane yield from 39–184 to 84–201 mL g −1 VS under mesophilic conditions . Zuo et al also reported that the effect of recirculation in two‐stage AD of vegetable waste is more pronounce when the system runs at a high OLR (above 2.6 g VS L −1 day −1 ).…”

Section: High‐rate Second‐stage Processmentioning

confidence: 99%

Rapid anaerobic digestion of organic solid residuals for biogas production using flocculating bacteria and membrane bioreactors – a critical review

Wikandari

Taherzadeh

2019

Biofuels Bioprod Bioref

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Anaerobic digestion (AD) is an attractive and sustainable alternative for stabilizing solid organic waste and producing biogas or biomethane. However, it is carried out by slow‐growing bacteria and archaea and it normally demands a hydraulic retention time (HRT) of 20–60 days in the bioreactor. Although high‐rate AD methods and technologies have been developed, they are normally applied to liquid wastes such as wastewater. In this work, the theory and latest developments in high‐rate digestion of organic solid wastes are reviewed. The process is accomplished by running the AD in a two‐stage operation. The first stage involves dissolving the solid materials in water, using robust hydrolytic bacteria. The effluent is then filtered to remove any undigested material, which in some cases contains inhibitory compounds. The filtrate is then fed to bioreactors containing high cell density ADs such as flocculating bacteria (granules) or membrane bioreactors (MBR) to protect the sensitive and very slow‐growing methanogen. Different approaches to overcoming problems faced in the first stage of digestion are proposed in this review. These problems include slow digestion of lignocellulosic biomass or failure of digestion due to inhibition problems for feedstocks containing toxic compounds, and rapid acidification for easily degradable substrates. The principle, technology, benefits and drawbacks, and factors affecting the efficacy of each type of high cell‐density reactor are presented. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…Large amounts of harvest corn straw is becoming dry and discarded in the field, which results in a large loss of carbohydrates and soluble components during the drying process. DCS is generally associated with lower biogas production [14] . Therefore, it is of great significance to study an efficient, stable and safe method to convert corn straw into renewable energy.…”

Section: Introductionmentioning

confidence: 99%

Metagenomics Combined With High-Throughput Sequencing Reveals the Methanogenic Potential of Fresh Corn Straw Under Thermophilic and High Olr

2022

Front. Agr. Sci. Eng.

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An analysis of single and two stage, mesophilic and thermophilic high rate systems for anaerobic digestion of corn stalk

Cited by 28 publications

References 29 publications

Resource Recovery Potential From Lignocellulosic Feedstock Upon Lysis With Ionic Liquids

Resource Recovery Potential From Lignocellulosic Feedstock Upon Lysis With Ionic Liquids

Rapid anaerobic digestion of organic solid residuals for biogas production using flocculating bacteria and membrane bioreactors – a critical review

Metagenomics Combined With High-Throughput Sequencing Reveals the Methanogenic Potential of Fresh Corn Straw Under Thermophilic and High Olr

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