Hydrogen from glucose: A combined study of glucose fermentation, bioethanol purification, and catalytic steam reforming

Sánchez, Néstor; Ruiz, Ruth; Cifuentes, Bernay; Cobo, Martha

doi:10.1016/j.ijhydene.2016.01.155

Cited by 22 publications

(11 citation statements)

References 46 publications

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“…3M1B had the highest production after a 24-h fermentation (282.9 ppm), followed by 2M1P (97.74 ppm), 1-propanol (65.09 ppm), ethyl acetate (5.89 ppm), and 1-butanol (2.86 ppm) when (NH 4 ) 2 SO 4 was not added. Several studies reported that 3M1B was obtained in higher concentrations than the other components assessed in this study [3,30]. However, there was a statistically significant reduction of this alcohol (p < 0.05) when 250 mg·L −1 (NH 4 ) 2 SO 4 was added to the medium, as shown in Figure 1b.…”

Section: Ethanol and Aliphatic Production During Fermentation Of Glucosementioning

confidence: 49%

“…Among those components, Le Valant et al [20] reported that those branched alcohols caused an important effect on Rh/MgAl 2 O 4 catalyst deactivation. Conversely, we reported that those alcohols can increase H 2 production but in the presence of a very active, resistant RhPt/CeO 2 catalyst [3]. Other authors have assessed the bioethanol steam reforming to produce H 2 by employing bioethanol obtained from different agroindustrial matrices, such as wheat [21], wood [23], and sugarcane [24].…”

Section: Introductionmentioning

confidence: 85%

“…Between each centrifugation, the pellets were washed twice with distilled water. Finally, all pellets were dried at 80 • C for 36 h [3]. Glucose was quantified using the DNS in a microtiter plate reader (IMarkTM, Bio-Rad, Hercules, CA, USA).…”

Section: Methodsmentioning

confidence: 99%

“…H 2 could be obtained from biomass by coupling a biological process that involves bioethanol production from a biomass and a catalytic process, which includes bioethanol steam reforming and purification of the H 2 stream. In this process, it is possible to achieve higher H 2 yields than other processes such as direct glucose steam reforming and H 2 production from fermentative pathways, due to the ease of yeasts to transform sugars into ethanol and the use of stable and selective catalysts that can efficiently transform ethanol into H 2 [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Bioethanol Production from Cachaza as Hydrogen Feedstock: Effect of Ammonium Sulfate during Fermentation

et al. 2017

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Abstract:Cachaza is a type of non-centrifugal sugarcane press-mud that, if it is not employed efficiently, generates water pollution, soil eutrophication, and the spread of possible pathogens. This biomass can be fermented to produce bioethanol. Our intention is to obtain bioethanol that can be catalytically reformed to produce hydrogen (H 2 ) for further use in fuel cells for electricity production. However, some impurities could negatively affect the catalyst performance during the bioethanol reforming process. Hence, the aim of this study was to assess the fermentation of Cachaza using ammonium sulfate ((NH 4 ) 2 SO 4 ) loadings and Saccharomyces cerevisiae strain to produce the highest ethanol concentration with the minimum amount of impurities in anticipation of facilitating further bioethanol purification and reforming for H 2 production. The results showed that ethanol production from Cachaza fermentation was about 50 g·L −1 and the (NH 4 ) 2 SO 4 addition did not affect its production. However, it significantly reduced the production of branched alcohols. When a 160 mg·L −1 (NH 4 ) 2 SO 4 was added to the fermentation culture, 2-methyl-1-propanol was reduced by 41% and 3-methyl-1-butanol was reduced by 6%, probably due to the repression of the catabolic nitrogen mechanism. Conversely, 1-propanol doubled its concentration likely due to the higher threonine synthesis promoted by the reducing sugar presence. Afterwards, we employed the modified Gompertz model to fit the ethanol, 2M1P, 3M1B, and 1-propanol production, which provided acceptable fits (R 2 > 0.881) for the tested compounds during Cachaza fermentation. To the best of our knowledge, there are no reports of the modelling of aliphatic production during fermentation; this model will be employed to calculate yields with further scaling and for life cycle assessment.

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Section: Ethanol and Aliphatic Production During Fermentation Of Glucosementioning

confidence: 49%

Section: Introductionmentioning

confidence: 85%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bioethanol Production from Cachaza as Hydrogen Feedstock: Effect of Ammonium Sulfate during Fermentation

et al. 2017

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“…Lopes et al [64] evaluated a system based on ethanol reforming and a 5 kW proton exchange membrane fuel cell (PEMFC), reporting that the net energy production of the system was around of 286 kJ/mol H 2 produced. Sanchez et al [73] conducted an energy analysis of the production of electricity in FC fed with H 2 from the steam reforming of bioethanol, reporting a net energy production of 156 kJ/mol H 2 produced. Those calculations included glucose fermentation and bioethanol purification steps.…”

Section: Energy Analysis From Rsm and Aspen Plus Integrationmentioning

confidence: 99%

Response Surface Methodology and Aspen Plus Integration for the Simulation of the Catalytic Steam Reforming of Ethanol

2017

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Abstract:The steam reforming of ethanol (SRE) on a bimetallic RhPt/CeO 2 catalyst was evaluated by the integration of Response Surface Methodology (RSM) and Aspen Plus (version 9.0, Aspen Tech, Burlington, MA, USA, 2016). First, the effect of the Rh-Pt weight ratio (1:0, 3:1, 1:1, 1:3, and 0:1) on the performance of SRE on RhPt/CeO 2 was assessed between 400 to 700 • C with a stoichiometric steam/ethanol molar ratio of 3. RSM enabled modeling of the system and identification of a maximum of 4.2 mol H 2 /mol EtOH (700 • C) with the Rh 0.4 Pt 0.4 /CeO 2 catalyst. The mathematical models were integrated into Aspen Plus through Excel in order to simulate a process involving SRE, H 2 purification, and electricity production in a fuel cell (FC). An energy sensitivity analysis of the process was performed in Aspen Plus, and the information obtained was used to generate new response surfaces. The response surfaces demonstrated that an increase in H 2 production requires more energy consumption in the steam reforming of ethanol. However, increasing H 2 production rebounds in more energy production in the fuel cell, which increases the overall efficiency of the system. The minimum H 2 yield needed to make the system energetically sustainable was identified as 1.2 mol H 2 /mol EtOH. According to the results of the integration of RSM models into Aspen Plus, the system using Rh 0.4 Pt 0.4 /CeO 2 can produce a maximum net energy of 742 kJ/mol H 2 , of which 40% could be converted into electricity in the FC (297 kJ/mol H 2 produced). The remaining energy can be recovered as heat.

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Crude Bioethanol Reforming Process

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Dan

et al. 2019

Ethanol

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Hydrogen from glucose: A combined study of glucose fermentation, bioethanol purification, and catalytic steam reforming

Cited by 22 publications

References 46 publications

Bioethanol Production from Cachaza as Hydrogen Feedstock: Effect of Ammonium Sulfate during Fermentation

Bioethanol Production from Cachaza as Hydrogen Feedstock: Effect of Ammonium Sulfate during Fermentation

Response Surface Methodology and Aspen Plus Integration for the Simulation of the Catalytic Steam Reforming of Ethanol

Crude Bioethanol Reforming Process

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