Evaluation of hydrogen and methane production from sugarcane vinasse in an anaerobic fluidized bed reactor

Reis, Cristiane Marques dos; Carosia, Mariana Fronja; Sakamoto, Isabel Kimiko; Varesche, Maria Bernadete Amâncio; Silva, Edson Luiz

doi:10.1016/j.ijhydene.2015.04.136

Cited by 69 publications

(30 citation statements)

References 49 publications

(48 reference statements)

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“…Strictly hydrogenotrophic methanogenic bacteria, Methanobacterium sp., utilize hydrogen and carbon dioxide to form methane (Equation 2) [33][34][35] while acetoclastic methanogenic bacterium, Methanosacina sp., is capable of converting acetic acid to methane (Equation (1)) [6,35]:…”

Section: Energy Production and A Comparison With The Literature Valuesmentioning

confidence: 99%

Co-Digestion of Napier Grass with Food Waste and Napier Silage with Food Waste for Methane Production

2018

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Enhancement of methane production by co-digestion of Napier grass and Napier silage with food waste was investigated in batch and repeated batch modes. First, the ratios of Napier grass to food waste and Napier silage to food waste were varied at different g-volatile solids (VS) to g-VS at an initial substrate concentration of 5 g-VS/L. The optimum ratios of Napier grass to food waste and Napier silage to food waste were 1:4 and 3:2 (g-VS/g-VS), respectively. This gave maximum methane yields (MY) of 411 and 362 mL-CH4/g-VSadded, respectively. Subsequently, the suitable ratios were used to produce methane at various substrate concentrations. A maximal MY of 403 and 353 mL CH4/g-VS were attained when concentrations of Napier grass co-digested with food waste and Napier silage co-digested with food waste were 15 g-VS/L and 20 g-VS/L, respectively. Under the optimum substrate concentration, the maximum MY from co-digestion of Napier grass with food waste was 1.14 times higher than that of Napier silage with food waste. Thus, co-digestion of Napier grass with food waste was further investigated at various organic loading rates (OLRs) in a 10.25 L horizontal reactor with a working volume of 5 L at an optimal ratio of 1:4 (g-VS/g-VS) and substrate concentration of 15 g VS/L. An OLR of 1.5 g-VS/L∙d gave a maximum methane production rate and MY of 0.5 L CH4/L∙d and 0.33 L-CH4/g-VSadded, respectively. Under the optimum OLR, the predominant methane producers were Methanoregula sp., Methanotorris sp., Methanobacterium sp., Methanogenium sp. and Methanosarcina sp. An energy production of 11.9 kJ/g-VSadded was attained.

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Section: Energy Production and A Comparison With The Literature Valuesmentioning

confidence: 99%

Co-Digestion of Napier Grass with Food Waste and Napier Silage with Food Waste for Methane Production

2018

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“…Allied with ethanol production is the vinasse production that reached 305.5 billion of litters in the same period [17] and this waste produced in agroindustrial sector can be applied on hydrogen production due to its concentration of glucose, sucrose and fructose (22e45 g L À1 COD) [18]. This process has to be done with some caution, mainly, because of the inhibitory compounds present in distillery wastes, which can be a barrier to the anaerobic digestion process [19]. An adjustment period is advisable to the bacteria consortia growth allied with the complex and/or inhibitory compounds.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen bioproduction with anaerobic bacteria consortium from brewery wastewater

Pachiega

Rodrigues

et al. 2019

International Journal of Hydrogen Energy

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Biohydrogen production is a cheap and clean way to obtain hydrogen gas. In subtropical countries such as Brazil the average temperatures of 27 C can favor the hydrogen producing bacteria growth. A mixed culture was obtained from a subtropical sludge treating brewery wastewater and anaerobic batch reactors were fed with glucose, sucrose, fructose and xylose in low concentrations (2.0, 5.0 and 10.0 g L À1) at 37 C, initial pH 5.5 and headspace with N 2 (99%) to maintain the anaerobic conditions. The inoculum was a subtropical granulated sludge from UASB (Upflow Anaerobic Sludge Blanket) reactor treating brewery wastewater. The higher H 2 yields were obtained in reactors operated with 2 and 5 g L À1 of fructose and they were 1.5 mol H 2 mol À1 of fructose and 1.3 mol H 2 mol À1 of sucrose, respectively. The volatile fatty acids (VFA) generated at the end of operation were, predominantly, butyric and acetic acid, indicating the favoring of the metabolic route of hydrogen generation by the consortium of anaerobic bacteria from the brewery wastewater. Biomolecular analyses revealed the predominance of hydrogen producing bacteria from Firmicutes phylum distributed in the families Streptococcaceae, Veillonellaceae and uncultured bacteria. These results confirm future applications of subtropical sludges with agroindustrial wastewaters containing low concentrations of sugars on hydrogen generation.

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“…In general, vinasse is a low pH brown-colored residue that exhibits high concentrations of organic and inorganic compounds. The presence of phenolic compounds (8,000 – 10,000 mg/L), melanoidins (result from the reaction of sugars and proteins by the Maillard reaction), caramel and the furfural components contribute to its color and make vinasse a complex and difficult wastewater for degradation [1, 2]. …”

Section: Introductionmentioning

confidence: 99%

Pretreatment of vinasse from the sugar refinery industry under non-sterile conditions by Trametes versicolor in a fluidized bed bioreactor and its effect when coupled to an UASB reactor

et al. 2017

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BackgroundDuring hydrous ethanol production from the sugar refinery industry in Mexico, vinasse is generated. Phenolic compounds and melanoidins contribute to its color and make degradation of the vinasse a difficult task. Although anaerobic digestion (AD) is feasible for vinasse treatment, the presence of recalcitrant compounds can be toxic or inhibitory for anaerobic microorganism. Therefore, this study presents new data on the coupled of the FBR (Fluidized Bed Bioreactor) to the UASB (Upflow Anaerobic Sludge Blanket) reactor under non-sterile conditions by T. versicolor. Nevertheless, for an industrial application, it is necessary to evaluate the performance in this kind of proposal system.ResultsTherefore, this study used a FBR for the removal of phenolic compounds (67%) and COD (38%) at non-sterile conditions. Continuous operation of the FBR was successfully for 26 days according to the literature. When the FBR was coupled to the UASB reactor, we obtained a better quality of effluent, furthermore methane content and yield were 74% and 0.18 m3 CH4/ kg CODremoval respectively.ConclusionsThis study demonstrated the possibility of using for an industrial application the coupled of the FBR to the UASB reactor under non-sterile conditions. Continuous operation of the FBR was carried out successfully for 26 days, which is the highest value found in the literature.

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Evaluation of hydrogen and methane production from sugarcane vinasse in an anaerobic fluidized bed reactor

Cited by 69 publications

References 49 publications

Co-Digestion of Napier Grass with Food Waste and Napier Silage with Food Waste for Methane Production

Co-Digestion of Napier Grass with Food Waste and Napier Silage with Food Waste for Methane Production

Hydrogen bioproduction with anaerobic bacteria consortium from brewery wastewater

Pretreatment of vinasse from the sugar refinery industry under non-sterile conditions by Trametes versicolor in a fluidized bed bioreactor and its effect when coupled to an UASB reactor

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