Looking for practical tools to achieve next-future applicability of dark fermentation to produce bio-hydrogen from organic materials in Continuously Stirred Tank Reactors

Tenca, A.; Schievano, Andrea; Lonati, S.; Malagutti, L.; Oberti, R.; Adani, Fabrizio

doi:10.1016/j.biortech.2011.05.088

Cited by 10 publications

(7 citation statements)

References 27 publications

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“…Pure glucose produced 186 ± 10 Nl H2 kg −1 DM , which corresponds to 1.49 mol H2 mol −1 glucose ; this result is in line with the results obtained by various authors in similar conditions, reported for comparison by Tenca et al . All other matrices resulted in lower H 2 production, with similar results (102–107 Nl H2 kg −1 DM ) for malt powder, corn silage and giant cane.…”

Section: Resultssupporting

confidence: 91%

“…UMC were used to incubate the selected organic matrices in lab‐scale reactors set under optimal conditions for DF, as indicated by Tenca et al . Bio‐hydrogen generation was measured and considered as parameter representing the effectiveness of DF.…”

Section: Methodsmentioning

confidence: 99%

“…Before the test, the inoculum was heat‐shocked in oven at 100 °C for 1 h to inhibit non‐spore forming bacteria and methanogens and diluted with sterile water to obtain optimal residual volatile fatty acid (VFA) concentration (VFA < 800 mg l −1 ). Batch reactors of 500 ml were inoculated with 300 ml, fed with 0.3 g of dried biomass; substrate/inoculum ratio and overall dilution were chosen to avoid metabolite‐driven inhibition . All reactors headspaces (200 ml) were flushed with N 2 and incubated at 55 °C till no further biogas was produced.…”

Section: Methodsmentioning

confidence: 99%

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Dark fermentation effectiveness as a key step for waste biomass refineries: influence of organic matter macromolecular composition and bioavailability

Manzini

Scaglia

Schievano

et al. 2015

Int. J. Energy Res.

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SUMMARYIn next generation bio-based refineries, hydrolysis and primary (or extractive) fermentations by undefined microbial cultures (UMC) are precursors of secondary bio-transformations, in which H 2 , CO 2 and mixed carboxylates are used as substrate for achieving added-value target products (e.g. bio-based chemicals, bio-plastics and pigments). Dark fermentation (DF) is the most simple UMC-driven hydrolysis and primary fermentations to extract gaseous and soluble mixtures of compounds from raw biomass. Which solid fractions (types of macro-molecules) of mixed raw organic matter (OM) are efficiently hydrolyzed + fermented during DF is an aspect that was rarely considered in depth.Here, a first attempt was made to propose a new approach for understanding the effects of DF on different fractions of biomass. A set of seven different biomasses underwent optimized DF tests and, for simplicity, only the gaseous main product, i.e. bio-hydrogen potential (BHP) production, was used as parameter to assess DF efficacy. BHP was studied in relation with OM characteristics: on one side, chemical composition (macro-molecular fractions) and, on the other side, bioavailability to UMC attack (using two different biological assays). BHP was found significantly correlated (Pearson's test for p < 0.05, n = 7) only to acid detergent lignin (negatively), soluble sugars and sugars + starch (positively). Bioavailability was negatively correlated with fibrous fractions and to fat-like fractions, but correlations with BHP were poorer (p > 0.05, n = 7). A statistical model (partial least square regression) was proposed for predicting BHP from OM characteristics, with interesting predictability. In the next future, the proposed approach should be widened to better understand the DF effectiveness not only referred to its gaseous products, but especially focusing on the wide range of soluble products (carboxylates), thought as substrates for secondary biorefinery.

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Section: Resultssupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Dark fermentation effectiveness as a key step for waste biomass refineries: influence of organic matter macromolecular composition and bioavailability

Manzini

Scaglia

Schievano

et al. 2015

Int. J. Energy Res.

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“…In Europe, the target market for biomethane from agriculture is Germany, where the first plants were started in 2007. Other countries, such as Austria, Switzerland, Sweden and the Netherlands, have developed the industry with the establishment of numerous plants (MOLINO et al, 2013;TENCA et al, 2011;PETTERSON, WELLINGER, 2009).…”

Section: Introductionmentioning

confidence: 99%

Use of membranas for biogas purification: review

Gomes

Morais

Pasquini

2019

RHE

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O biogás é um combustível orgânico limpo que é produzido pela decomposição da matéria orgânica sob condições anaeróbias, composto de cerca de 55-65% de metano, 30-45% de dióxido de carbono, traços de sulfeto de hidrogênio e frações de vapor de água. A presença de outros compostos além do metano, embora ocorram em concentrações muito baixas, é um problema, uma vez que são prejudiciais para qualquer equipamento de processamento e restringem seu uso. Portanto, para atingir a composição padrão de biogás, é importante incluir as etapas de purificação antes de usar o biogás. As tecnologias tradicionais de purificação baseiam-se essencialmente no uso de métodos físicos e químicos, que também geram poluentes secundários e são caros. O presente estudo é uma revisão de diferentes processos de purificação de biogás baseados em membranas que são amplamente utilizados em todo o mundo e as principais tecnologias sendo desenvolvidas ou em pesquisa. Materiais de membrana apropriados, bem como um módulo eficiente e projeto de processo, determinam a competitividade com a tecnologia de separação convencional.

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“…No entanto, hoje, a maioria das plantas de biogás em grande escala na Europa dependem do processo de estágio único e a tecnologia em duas etapas permanece não comprovada no campo. Isto é principalmente porque a estabilidade do processo de fermentação escura e a maximização dos rendimentos da produção de hidrogênio na primeira etapa ainda são incertas(TENCA et al, 2011).A principal característica da DA-S que favorece sua aplicação no setor gerador de resíduos lignocelulósicos é a utilização direta do bagaço de cana para a produção de biogás. Em uma planta industrial lignocelulósico, esse processo pode ser alimentado com bagaço de cana residual do processo de produção de etanol (1G) e açúcar.…”

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Produção de biogás a partir de bagaço de cana-de-açúcar após pré-tratamento com ácido cítrico diluído

Gomes¹

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Agradeço a Deus pela oportunidade de viver, aprender e crescer, aos meus pais, pelo amor, educação, incentivos e exemplos de vida; às minhas irmãs Emanuelle e Lucille, pelo amor, incentivos, companheirismo e paciência e amigos e parentes pelo incentivo constante. Meu agradecimento ao Prof. e amigo Daniel Pasquini, pela oportunidade de desenvolver este projeto em seu grupo de pesquisa, confiança em mim depositada, orientação, paciência, dedicação, empenho, respeito e principalmente pela amizade ao longo destes anos. Ao meu co-orientador Prof. Bruno pela contribuição durante a execução do trabalho.

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Looking for practical tools to achieve next-future applicability of dark fermentation to produce bio-hydrogen from organic materials in Continuously Stirred Tank Reactors

Cited by 10 publications

References 27 publications

Dark fermentation effectiveness as a key step for waste biomass refineries: influence of organic matter macromolecular composition and bioavailability

Dark fermentation effectiveness as a key step for waste biomass refineries: influence of organic matter macromolecular composition and bioavailability

Use of membranas for biogas purification: review

Produção de biogás a partir de bagaço de cana-de-açúcar após pré-tratamento com ácido cítrico diluído

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