Performance and microbial dynamics in packed-bed reactors during the long-term two-stage anaerobic treatment of tequila vinasses

Toledo-Cervantes, Alma; Guevara-Santos, Nora; Arreola-Vargas, Jorge; Snell‐Castro, Raúl; Méndez‐Acosta, Hugo Oscar

doi:10.1016/j.bej.2018.06.020

Cited by 22 publications

(13 citation statements)

References 25 publications

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“…More recently, in two-stage PBRs operated over 335 d, Toledo-Cervantes et al [7] achieved the highest YCH 4 of 0.29 NL-CH 4 /g-COD removed at OLRs in the range of 2.7-6.8 g-COD/L-d (6-2.4 d HRT) with COD removal efficiencies between 81 and 95%, and with average CH 4 contents around 80% (v/v). However, further increasing the OLR to 12 g-COD/L-d (2.2-d HRT) decreased the removal efficiency of COD (from 81 to 74%) accompanied with HAc and HPr accumulation.…”

Section: Acid Hydrolysismentioning

confidence: 98%

“…The physicochemical composition of a given stream of AB and TV may change from batch to batch, depending mainly on the raw materials used (e.g. maturity of agave), juice extraction process (cooked and uncooked agave), and the prevailing conditions of fermentation and distillation in the case of TV [3,[6][7][8][9]. Despite such influential factors, there are some general features that can be distinguished between AB and TV.…”

Section: Tequila Production Process and Its Main By-products: Agave Bmentioning

confidence: 99%

“…Extractives are the nonstructural components of lignocellulose, including fats, phenolics, resin acids, waxes, and inorganics [10]. Regarding TV, it is a brown and acidic wastewater (pH of 3.4-4.5, total acidity of 1500-6000 mg-CaCO 3 /L) containing high chemical oxygen demand (COD) concentration of 40-100 g/L, as well as high total solids (25-50 g/L), salts, metal ions, organic acids, phenolic compounds, and melanoidins [3,5,7,11].…”

Section: Tequila Production Process and Its Main By-products: Agave Bmentioning

confidence: 99%

“…organic acids, furan derivatives, and polyphenols) in different concentrations, results showed no negative effects in the AD performance. Toledo-Cervantes et al [7] also evaluated the bioCH 4 production from the spent medium of DF of enzymatic hydrolysate of AB. The authors found that bioCH 4 production in an AnSBR was severely inhibited likely because the remaining catalytic activity of the enzyme used may have contributed to the degradation of CH 4 biocatalyst.…”

Section: Acid Hydrolysismentioning

confidence: 99%

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A Comprehensive Overview of the Potential of Tequila Industry By-Products for Biohydrogen and Biomethane Production: Current Status and Future Perspectives

García‐Depraect¹,

Osuna-Laveaga²,

León-Becerril³

2020

New Advances on Fermentation Processes

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Nowadays, the use of agro-industrial by-products as alternative sustainable resources to generate bioenergy and high-value bioproducts is one of the most important research topics to tackle environmental concerns related to the excessive consumption of fossil-based fuels and rapid urbanization and industrialization. This chapter provides a broad overview of the potential of the main tequila industry by-products, agave bagasse and tequila vinasse, for biohydrogen (bioH 2) and biomethane (bioCH 4) production via dark fermentation and anaerobic digestion, respectively. First, pretreatment or conditioning steps commonly applied to tequila by-product streams before downstream biological processes are highlighted. The operational performance of bioH 2-and bioCH 4-producing reactors is subsequently reviewed, with a focus on reactor configuration and performance, microbial metabolic pathways, and the characterization of microbial communities. Additionally, the development of multi-stage anaerobic digestion processes is comprehensively discussed from a practical point of view. Finally, limitations and potential improvements in the field of bioH 2 and bioCH 4 production are presented.

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Section: Acid Hydrolysismentioning

confidence: 98%

Section: Tequila Production Process and Its Main By-products: Agave Bmentioning

confidence: 99%

Section: Tequila Production Process and Its Main By-products: Agave Bmentioning

confidence: 99%

Section: Acid Hydrolysismentioning

confidence: 99%

See 2 more Smart Citations

A Comprehensive Overview of the Potential of Tequila Industry By-Products for Biohydrogen and Biomethane Production: Current Status and Future Perspectives

García‐Depraect¹,

Osuna-Laveaga²,

León-Becerril³

2020

New Advances on Fermentation Processes

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“…; Toledo‐Cervantes et al . ), were quantified using detection systems reported by Reitschuler et al . () for SYBR Green‐based Q‐PCR.…”

Section: Methodsmentioning

confidence: 99%

Active prokaryotic population dynamics exhibit high correlation to reactor performance during methane production from acid hydrolysates ofAgave tequilanavar.azulbagasse

Snell‐Castro¹,

Méndez‐Acosta²,

Arreola-Vargas³

et al. 2019

J Appl Microbiol

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Aims The purpose of this study was to apply cDNA approach for the characterization of active prokaryotic community to understand microbial scenarios and performance of an AnSBR digester fed with acid hydrolysates of Agave tequilana var. azul bagasse (ATAB). Methods and Results The digester was implemented for methane production under organic loading rate (OLR) disturbances to correlate physicochemical variables with changes in abundance, diversity and population dynamics of active Bacteria and Archaea by principal components analysis (PCA). Results indicated that methane yield increased as well as active syntrophic relationships for interspecies hydrogen/formate (Anaerolinaceae‐Methanobacterium beijingense) and acetate (Anaerolinaceae‐Methanosaeta concilii) transfers at 8 g‐COD l−1 day−1. However, methane yield was negatively affected at 16 g‐COD l−1 day−1 due to the competition for acetate by active Desulfovibrio marrakechensis and volatile fatty acids inhibition. Conclusions Microbial scenarios obtained by PCA correlations indicated that methane production from acid hydrolysates of ATAB was feasible at 8 g‐COD l−1 day−1. The digester operation at higher OLR only favoured methanogenesis by the hydrogenotrophic pathway. Significance and Impact of the Study Only cDNA analysis showed Archaea population dynamics, exhibiting high correlation with physicochemical variables towards the understanding of the methanogenic digester performance during OLR disturbances.

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Effect of Lactate Fermentation Type on the Biochemical Methane Potential of Tequila Vinasse

Diaz-Cruces¹,

García‐Depraect²,

León-Becerril³

2020

Bioenerg. Res.

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Performance and microbial dynamics in packed-bed reactors during the long-term two-stage anaerobic treatment of tequila vinasses

Cited by 22 publications

References 25 publications

A Comprehensive Overview of the Potential of Tequila Industry By-Products for Biohydrogen and Biomethane Production: Current Status and Future Perspectives

A Comprehensive Overview of the Potential of Tequila Industry By-Products for Biohydrogen and Biomethane Production: Current Status and Future Perspectives

Active prokaryotic population dynamics exhibit high correlation to reactor performance during methane production from acid hydrolysates ofAgave tequilanavar.azulbagasse

Effect of Lactate Fermentation Type on the Biochemical Methane Potential of Tequila Vinasse

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