Optimisation of substrate blends in anaerobic co-digestion using adaptive linear programming

García-Gen, Santiago; Rodríguez, Jorge; Lema, Juan M.

doi:10.1016/j.biortech.2014.09.089

Cited by 45 publications

(32 citation statements)

References 28 publications

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“…The production and use of biogas generated by the AD process represents significant potential to achieve energy-related, environmental, and economic benefits 16 . However, the management of biogas plants is not trivial, and involves achievement of the correct organic loading rate (OLR), balance of the C/N ratio, maintenance of the proper pH values, and mitigation of inhibitory effects 17 . Substrate characterization is a key task for designing and operating anaerobic digesters: The parameters of interest include moisture, volatile solids content, substrate structure, biodegradability and methane potential [18][19][20] .…”

Section: Introductionmentioning

confidence: 99%

Biovalorization of Brewery Waste by Applying Anaerobic Digestion

Vitanza

Cortesi

Gallo

et al. 2016

Chem.Biochem.Eng.Q.

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In the food industry, the brewing sector holds a strategic economic position: in the year 2013, the beer production of the EU-28 was equal to 383,553,000 hL. The brewing process includes chemical and biochemical reactions and solid-liquid separations, involving the generation of various residues and by-products, among which the major two fractions are brewer's spent grain (BSG), and exhausted brewery yeast (BY). Although until today their main use has been for animal feed, in recent years, several studies have investigated the application of anaerobic digestion in order to revalue the brewery wastes.In this work, specific methane production (SMP) and first-order solubilisation (disintegration + hydrolysis) rates (k sol ) for BSG and BY were evaluated. Biomethanation tests were performed in 5-L fed-batch stirred reactors at several substrate/inoculum ratios.

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Section: Introductionmentioning

confidence: 99%

Biovalorization of Brewery Waste by Applying Anaerobic Digestion

Vitanza

Cortesi

Gallo

et al. 2016

Chem.Biochem.Eng.Q.

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“…The Blender module contains a linear programming method developed by García-Gen et al (2014). It conducts simultaneously an optimisation of both the substrates blend and HRT such that the objective function, which is the methane production rate, is maximised.…”

Section: Substrate Blender Block Linear Programming Optimisationmentioning

confidence: 99%

“…1. A linear programming optimisation method calculates a feasible HRT and substrate blend for maximum methane productivity and subjected to a set of linear restrictions (García-Gen et al, 2014). These conditions are maintained in the digester during a specific period of time during which the diagnosis of the process stability is conducted.…”

Section: Control Strategy For Anaerobic Co-digestionmentioning

confidence: 99%

Control strategy for maximum anaerobic co-digestion performance

García-Gen

Rodríguez²,

Lema

2015

Water Research

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“…A viable alternative can be recognized in stillage anaerobic co-digestion, which is the simultaneous digestion of stillage with two or more substrates [119]. Such process allows the macro-and micro-nutrients equilibrium, moisture balance and promotes the dilution of potentially inhibitory compounds, thus improving methane yields [120].…”

Section: (A) Continuous Stirred Tank Reactor (Cstr) (B) Fixed Bed Rementioning

confidence: 99%

Combined Biogas and Bioethanol Production: Opportunities and Challenges for Industrial Application

Cesaro

Belgıorno

2015

Energies

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Abstract:In the last decades the increasing energy requirements along with the need to face the consequences of climate change have driven the search for renewable energy sources, in order to replace as much as possible the use of fossil fuels. In this context biomass has generated great interest as it can be converted into energy via several routes, including fermentation and anaerobic digestion. The former is the most common option to produce ethanol, which has been recognized as one of the leading candidates to substitute a large fraction of the liquid fuels produced from oil. As the economic competitiveness of bioethanol fermentation processes has to be enhanced in order to promote its wider implementation, the most recent trends are directed towards the use of fermentation by-products within anaerobic digestion. The integration of both fermentation and anaerobic digestion, in a biorefinery concept, would allow the production of ethanol along with that of biogas, which can be used to produce heat and electricity, thus improving the overall energy balance. This work aims at reviewing the main studies on the combination of both bioethanol and biogas production processes, in order to highlight the strength and weakness of the integrated treatment for industrial application.

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Optimisation of substrate blends in anaerobic co-digestion using adaptive linear programming

Cited by 45 publications

References 28 publications

Biovalorization of Brewery Waste by Applying Anaerobic Digestion

Biovalorization of Brewery Waste by Applying Anaerobic Digestion

Control strategy for maximum anaerobic co-digestion performance

Combined Biogas and Bioethanol Production: Opportunities and Challenges for Industrial Application

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