2015
DOI: 10.1016/j.biortech.2015.03.116
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Utilising biohydrogen to increase methane production, energy yields and process efficiency via two stage anaerobic digestion of grass

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Cited by 67 publications
(21 citation statements)
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“…The methane yield in MR2 had no significant difference to that in MR1 in Operation 1 (n = 26, p > 0.05), but accounting for only 67%, 52% and 50% of those in MR1 in Operation 2-4. This results indicates that two-stage AD system contributes to methane production at high OLR, which is accordant to the previous literature that demonstrated the improvement of methane production by biohydrogen via two-stage AD process at similar OLR [35]. Besides, the concentrations of VS, COD, carbohydrate and protein in MR1 were lower than those in MR2, implying that more organics were converted in two-stage AD system.…”
Section: Comparison Of Operational Performance Between Mr1 and Mr2 Atsupporting
confidence: 89%
“…The methane yield in MR2 had no significant difference to that in MR1 in Operation 1 (n = 26, p > 0.05), but accounting for only 67%, 52% and 50% of those in MR1 in Operation 2-4. This results indicates that two-stage AD system contributes to methane production at high OLR, which is accordant to the previous literature that demonstrated the improvement of methane production by biohydrogen via two-stage AD process at similar OLR [35]. Besides, the concentrations of VS, COD, carbohydrate and protein in MR1 were lower than those in MR2, implying that more organics were converted in two-stage AD system.…”
Section: Comparison Of Operational Performance Between Mr1 and Mr2 Atsupporting
confidence: 89%
“…In addition, the capacity for using the whole substrate is limited in dark fermentation due to the high production of organic acids as by-products; thus, the application of this process as an intermediate stage becomes a reasonable option with the digestion process dedicated to the conversion of the hydrolysed material. The energy efficiency of the global process (coupling dark fermentation and anaerobic digestion) has been demonstrated to be increased by 13% when compared with the stand alone digestion configuration [63]. A similar approach has been also reported for integrating microbial electrolysis cells and anaerobic digestion, in this case for either increasing the efficiency of the organic matter degradation and thus methane production or increasing the production of energy by obtaining hydrogen [64,65].…”
Section: Improving the Performance Of The Anaerobic Digestion Processmentioning
confidence: 76%
“…A produção de H 2 na fase acidogênica, conforme detalhadamente discutido nas próximas seções, também pode ser um fator-chave para o aumento da recuperação de energia na biodigestão (Massanet-Nicolau et al, 2015), embora grande parte do potencial energético de processos em duas fases resulte de uma conversão mais eficiente da matéria orgânica a CH 4 iii. Redução no tempo de partida da fase metanogênica e aumento da capacidade dos sistemas, i.e., aplicação de maiores cargas orgânicas, também consequências diretas da maior estabilidade operacional (Ke et al, 2005;Liu et al, 2013).…”
Section: Separação De Fasesunclassified
“…Neste ponto ressalta-se, novamente, a vantagem da separação de fases em sistemas termofílicos como uma estratégia para obtenção da estabilidade operacional (De Gioannis et al, 2008;Massanet-Nicolau et al, 2015). O desequilíbrio de reatores termofílicos está frequentemente associado ao desbalanceamento entre as populações acidogênicas e as metanogênicas, fato que leva ao acúmulo de ácidos orgânicos devido à rápida velocidade de acidificação do substrato (Yu et al, 2015).…”
Section: Desempenho Global Dos Sistemas Combinados: Remoção De Matériunclassified
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