Optimization, metabolic pathways modeling and scale-up estimative of an AnSBBR applied to biohydrogen production by co-digestion of vinasse and molasses

Albanez, Roberta; Lovato, Giovanna; Zaiat, Marcelo; Ratusznei, Suzana Maria; Rodrigues, José Alberto Domingues

doi:10.1016/j.ijhydene.2016.08.145

Cited by 44 publications

(13 citation statements)

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“…Studies carried out in AnSBBR, for the production of hydrogen, have been conducted with wastewater based on glycerine and glucose (Bravo et al, 2015, Souza et al, 2015) and some agroindustrial effluents, such as from Lima et al (2016), with cheese serum, and Albanez et al (2016), with vinasse and molasses in codigestion.…”

Section: Introductionmentioning

confidence: 99%

BIOHYDROGEN PRODUCTION IN AnSBBR IN FED-BATCH FROM STARCH EFFLUENT: INFLUENCE OF ORGANIC LOAD

et al. 2018

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The hydrogen is a fuel with a high energy density. Studies have sought to verify the potential of different residues and configurations of reactors in the production of biohydrogen. This study evaluated the influence of the organic loading rate on the production of biohydrogen from cassava starch wastewater (CSW) in anaerobic sequencing batch biofilm reactors (AnSBBR) operated in a fed-batch. In the tests, the organic loading rates of 9.0; 13.5 and 18.0 gCT L-1 d-1 were used, at cycle times (CT) of 4; 4 and 2 h (tests I, II and III, respectively). The reactor was inoculated with sludge from a pilot anaerobic reactor used in the treatment of CSW, heat treated (heated at 90°C for 15 min). With the increase of the organic load (condition I to II) with the same cycle time (CT: 4 h), there were increases in the hydrogen molar productivity (PrM) and hydrogen yield in relation to applied total carbohydrate (RMCA) and removed (RMCR). However, with the increase in the organic loading rate in which the CT was reduced from 4 to 2 h (condition II to III), there was a decrease in PrM and RMCA and RMCR. The best performance of the reactor was verified in condition II (organic loading rate: 13.5 gTC L-1 d-1 ; CT: 4 h), in which the PrM was 35.8 molH2 m-3 d-1 and RMCA and RMCR were 2.24 and 3.67 molH2 kgTC-1 , respectively.

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Section: Introductionmentioning

confidence: 99%

BIOHYDROGEN PRODUCTION IN AnSBBR IN FED-BATCH FROM STARCH EFFLUENT: INFLUENCE OF ORGANIC LOAD

et al. 2018

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“…Nevertheless, this kind of carbon source presents an expensive cost, which prevents the process to be economically feasible. Therefore, recent studies have used organic wastes as substrate for hydrogen production [15][16][17].…”

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Improvement of hydrogen production by biological route using repeated batch cycles

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Romão

et al. 2017

Process Biochemistry

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Highlights 1) Hydrogen produced by dark fermentation based on repeated-batch cycles 2) Extension superior to 900 h was succeeded with alternated cycles of sugars 3) Maximum H2 yield (3.4 mol H2/mol hexose) resulted from alternated addition of sugars 4) Maximum hydrogen productivity was 168.27 mmol H2/L/day in 24 h of process 5) Microorganisms followed the butyric-type fermentation AbstractHydrogen is considered a very clean energy source, since its combustion releases mainly water as a reaction product. Besides, it has the advantage of having the highest energy density when compared to any other fuel. This work studied the hydrogen production applying dark fermentation by a heat shock pre-treated microbial 2 consortium. A repeated batch cycle operation was evaluated by adding glucose or lactose in an isolated, alternated or simultaneous ways, in order to keep the production of hydrogen for a longer time. Fermentations with simultaneous addition of glucose and lactose promoted maximum productivity of 168.27 mmol H2·L -1 ·day -1 . Nevertheless, the alternation of two carbon source (glucose and lactose) allowed keeping the culture active with potential to hydrogen production for a period of time higher than 900 h. At the end of fermentation, the main products were lactic acid and butyric acid, followed by acetic acid, ethanol and propionic acid.

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“…Então, considerou-se o consumo dos ácidos propiônico e butírico para formar ácido acético e hidrogênio (acetogênese). Finalmente, considerou-se a metanogênese acetoclástica e hidrogenotrófica para a formar metano (metanogêse) ALBANEZ et al, 2016b;LOVATO et al, 2016). As Equações 4.25 a 4.32 apresentam os modelos cinéticos de primeira ordem de consumo de substrato (r S ), formação e consumo dos ácidos acético (r HAc ), propiônico (r HPr ) e butírico, hidrogênio (r H ) e metano (r M ), respectivamente.…”

Section: Fundamentos Teóricos Do Modelo Cinético Do Reatorunclassified

“…O procedimento para estimativa do potencial de produção de metano foi realizado conforme metodologia descrita por Albanez et al (2016b), utilizando informações de usinas de produção de etanol e de laticínios. Para tal, foram utilizados dados das condições experimentais do projeto em conjunto com dados reais da indústria de laticínios.…”

Section: Fundamentos Teóricos Para Estimativa De Aumento De Escalaunclassified

“…A entalpia de combustão do metano foi adotada como 803 kJ/mol CH4(PERRY & GREEN, 1997). Os valores das concentrações de matéria orgânica na forma de DQO afluente e efluente, rendimento molar de metano por matéria orgânica removida (RMCR), bem como os volumes residual e alimentado foram referentes às condições de estudo.Para o cálculo da produção de metano para recuperação energética foi realizada uma estimativa de aumento de escala do reator de bancada para um reator de escala industrial, seguindo a metodologia apresentada porAlbanez et al (2016b). O volume total representa todo o volume necessário para o tratamento do soro gerado, o Volume líquido é representante do volume de reação do reator, descontado o volume de material suporte do volume total.…”

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Produção de metano em AnSBBR tratando soro em condição termofílica

Siqueira¹

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SÃO CARLOS FEVEREIRO 2018 AGRADECIMENTOS Aos meus pais, Joaquim e Lenice, por todo amor, pela ajuda em qualquer momento necessário e também pelo incentivo. Por sempre acreditarem em mim e, principalmente, por serem exemplos de caráter e dignidade. Também ao meu irmão, Lucas, por ser um grande amigo e a todos os familiares. Ao meu orientador, José Alberto, pela orientação no projeto, mas também incentivo, conversas do dia-a-dia e pela transmissão de um pouco do seu conhecimento. Aos companheiros do laboratório, Suzana, Roberta, Giovanna, Juliane, Natália, Marcela, Lia, Marina e Jéssica, pela ajuda nas análises, perfis e também pela amizade. À Tamires Koga, pelo carinho, incentivo, companheirismo, compreensão e apoio incondicional. A todos os professores do Departamento de Hidráulica e Saneamento da EESC/USP, pelos quais tive o privilégio de ser ensinado, por todo conhecimento e por despertar ainda mais meu interesse na área. Aos amigos do mestrado, Ambiental 09 e da república pelo companheirismo, grandes momentos vividos e amparo nos momentos de necessidade. Aos amigos do Residencial Planalto, pelo convívio durante todos estes anos e por serem amigos com os quais sempre pude e sempre poderei contar nas horas mais importantes. Ao Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), pelo incentivo da pesquisa num país que pouco reconhece seus pesquisadores e também pela bolsa de mestrado concedida, sem a qual este trabalho não seria possível. E a todos que diretamente ou indiretamente contribuíram com o projeto. Palavras-chave: AnSBBR; Metano; Soro; Termofílica; Metanogênese. VERSÃO CORRIGIDA SÃO CARLOS FEVEREIRO 2018ABSTRACT SIQUEIRA, T. S. AnSBBR applied to cheese whey treatment and methane production under termophilic condition. 218p. Master's Degree Dissertation -São Carlos School of Engineering, University of São Paulo, São Carlos, 2018.One of the alternatives to recover energy from waste treatment is by the anaerobic treatment of effluents using discontinuous reactor configuration, such as ASBR and AnSBBR, aiming to produce methane and hydrogen. This reactors configuration allows greater flexibility and stability in the operation, a better controlled process, as well as shorter start-up. The objective of this project was to evaluate the methane production from the anaerobic digestion of cheese whey under thermophilic conditions. Cheese whey is the largest by-product of the dairy industry, it is generated in a proportion of 90% of the milk volume, its organic matter concentration can vary between 2 and 80 g COD.L -1 depending on the process. The evaluation of the environmental suitability of this residue was also analyzed. The reactor was operated to determinate the influence of the applied organic load (stability limit), feeding strategy (filling time -batch or fed-batch), and the relationship between cycle time and affluent concentration (operational flexibility). The reactor was operated at 55º C, with cycle time of 8 hours and 100 rpm of agitation speed. The volume fed per cycle was 1.0 lit...

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Optimization, metabolic pathways modeling and scale-up estimative of an AnSBBR applied to biohydrogen production by co-digestion of vinasse and molasses

Cited by 44 publications

References 31 publications

BIOHYDROGEN PRODUCTION IN AnSBBR IN FED-BATCH FROM STARCH EFFLUENT: INFLUENCE OF ORGANIC LOAD

BIOHYDROGEN PRODUCTION IN AnSBBR IN FED-BATCH FROM STARCH EFFLUENT: INFLUENCE OF ORGANIC LOAD

Improvement of hydrogen production by biological route using repeated batch cycles

Produção de metano em AnSBBR tratando soro em condição termofílica

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