Effects of different pretreatment methods on biogas production and microbial community in anaerobic digestion of wheat straw

Kang, Ya-Ru; Yao, Su; Wang, Jing; Chu, Yingying; Tian, Guangming; He, Ruo

doi:10.1007/s11356-021-14296-5

Cited by 31 publications

(12 citation statements)

References 49 publications

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“…Ruminiclostridium , belonging to the phylum Firmicutes , are hydrolytic bacteria characterized by metabolizing cellulosic materials, with a high concentration of lignocellulose (Peng et al, 2014), which is the case of residues used in reactor operation. In the work by Kang et al (Kang et al, 2021) wheat straw was used for anaerobic digestion, and bacteria belonging to the genus Ruminiclostrium and Hydrogenispora were found as the main microorganisms. This fact leads to the association that such bacteria are present in the degradation of lignocellulose substrates since wheat straw and residues from the present work have a similar composition.…”

Section: Resultsmentioning

confidence: 99%

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Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Volpi

Mockaitis

Bruant

et al. 2022

Preprint

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The co-digestion of residues from the sugarcane industry has already proven to be a highly attractive process for biogas production through anaerobic digestion (AD). The use of residues such as vinasse (1G) filter cake (1G) and deacetylation liquor (2G) in operation in a continuous CSTR reactor showed a possibility of integration of 1G and 2G ethanol biorefineries through AD in previous work by our research group. The use of nanoparticles (NP) is a favorable way to optimize AD processes, as these additives serve as a means of introducing nutrients into the process in a more assertive way from the point of view of distribution and interaction with microorganisms. In this context, the present work proposed the optimization of the co-digestion of vinasse, filter cake, and deacetylation liquor in a continuous reactor through the addition of Fe3O4 NP, by the purpose of comparison results with the operation of the same substrates and the same condition but without NP. Initially, tests were carried out in batches with different concentrations of NPs, to evaluate the best concentration to be added in the continuous reactor. A concentration of 5 mg L-1 was chosen, and it was added to each increase in organic rate load (ORL) used in the process. CH4 production reached maximum values of 2.8 ± 0.1 NLCH4 gVS-1 and organic matter removal 71 ± 0.9%, in phase VI, with ORL of 5.5 gVS L-1 day-1. This production was 90% higher than the reactor co-digestion operation without the presence of NP. Furthermore, according to the results of pH, alkalinity, it can be concluded that the methanogenesis stabilized at 60 days of operation, being 30 days before when there was no NP added. The development of AD was stable, with low variations in the oxidation-reduction potential (ORP) and with stable organic acid (OA) concentrations, indicating the possibility of route propionic acid to produce CH4. The main methanogenic Archeae found was Methanoculleus, indicating that the predominant metabolic route was that of syntrophic acetate oxidation (SAO) coupled with hydrogenotrophic methanogenesis. The use of Fe3O4 NP managed to improve the AD operation of residues from the 1G2G ethanol production industry and did not modify the microbial community present, only stimulated their growth.

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Section: Resultsmentioning

confidence: 99%

“…Hydrogenispora is acetogenic bacteria, which can ferment carbohydrates such as glucose, maltose, and fructose into acetate, ethanol, and H 2 (Kang et al, 2021). These bacteria can act in conjunction with hydrogenotrophic methanogens.…”

Section: Resultsmentioning

confidence: 99%

Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Volpi

Mockaitis

Bruant

et al. 2022

Preprint

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“…As previously reported, the anaerobic condition indeed favored the enrichment of the above three genera. Moreover, their metabolic activity could affect other living processes, especially those that had an antagonized relationship with them ( 17 , 32 – 34 ).…”

Section: Discussionmentioning

confidence: 99%

Insights into Pyrroloquinoline Quinone (PQQ) Effects on Soil Nutrients and Pathogens from Pepper Monocropping Soil under Anaerobic and Aerobic Conditions

Zhang

et al. 2022

Microbiol Spectr

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“…the abundance of Clostridiales, which are decisive performers during hydrolysis, acidogenesis, acetogenesis, and syntrophic acetate oxidation (Ziganshin et al, 2013). Both OTU0006 and OTU0009 were identified as Hydrogenispora sp., which are hydrolytic, acidogenic, and acetogenic bacteria already detected in anaerobic digester (Kang et al, 2021). These bacteria are able to ferment carbohydrates such as glucose, maltose, and fructose into acetate, ethanol, and hydrogen, respectively (Yang et al, 2016;Corbellini et al, 2018), and probably for this reason OTU0009 was slightly more abundant in T1 samples, especially in SBB.…”

Section: A Detailed Focus On the Bacterial Community During Thermophi...mentioning

confidence: 99%

Rigid bioplastics shape the microbial communities involved in the treatment of the organic fraction of municipal solid waste

Bandini

Vaccari²,

Soldano³

et al. 2022

Front. Microbiol.

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While bioplastics are gaining wide interest in replacing conventional plastics, it is necessary to understand whether the treatment of the organic fraction of municipal solid waste (OFMSW) as an end-of-life option is compatible with their biodegradation and their possible role in shaping the microbial communities involved in the processes. In the present work, we assessed the microbiological impact of rigid polylactic acid (PLA) and starch-based bioplastics (SBB) spoons on the thermophilic anaerobic digestion and the aerobic composting of OFMSW under real plant conditions. In order to thoroughly evaluate the effect of PLA and SBB on the bacterial, archaeal, and fungal communities during the process, high-throughput sequencing (HTS) technology was carried out. The results suggest that bioplastics shape the communities’ structure, especially in the aerobic phase. Distinctive bacterial and fungal sequences were found for SBB compared to the positive control, which showed a more limited diversity. Mucor racemosus was especially abundant in composts from bioplastics’ treatment, whereas Penicillium roqueforti was found only in compost from PLA and Thermomyces lanuginosus in that from SBB. This work shed a light on the microbial communities involved in the OFMSW treatment with and without the presence of bioplastics, using a new approach to evaluate this end-of-life option.

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Effects of different pretreatment methods on biogas production and microbial community in anaerobic digestion of wheat straw

Cited by 31 publications

References 49 publications

Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Insights into Pyrroloquinoline Quinone (PQQ) Effects on Soil Nutrients and Pathogens from Pepper Monocropping Soil under Anaerobic and Aerobic Conditions

Rigid bioplastics shape the microbial communities involved in the treatment of the organic fraction of municipal solid waste

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Effects of different pretreatment methods on biogas production and microbial community in anaerobic digestion of wheat straw

Cited by 31 publications

References 49 publications

Fe3O4nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Fe3O4nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Insights into Pyrroloquinoline Quinone (PQQ) Effects on Soil Nutrients and Pathogens from Pepper Monocropping Soil under Anaerobic and Aerobic Conditions

Rigid bioplastics shape the microbial communities involved in the treatment of the organic fraction of municipal solid waste

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Product

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Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes

Fe₃O₄nanoparticles to optimize the co-digestion of vinasse, filter cake, and deacetylation liquor: operational aspects and microbiological routes