A new concept for enhancing energy recovery from agricultural residues by coupling anaerobic digestion and pyrolysis process

Monlau, Florian; Sambusiti, Cécilia; Antoniou, N.; Barakat, Abdellatif; Zabaniotou, Α.

doi:10.1016/j.apenergy.2015.03.024

Cited by 217 publications

(96 citation statements)

References 34 publications

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“…It also favors nutrient retention in the digestates, facilitating nutrient uptake if the digestate is spread on land for plant cultivation . Moreover, as biochar can be produced from digestate or directly from FW, its addition for AD improvement clearly fits within the approach of the environmental biorefinery.…”

Section: Introductionmentioning

confidence: 99%

Addition of biochar and trace elements in the form of industrial FeCl₃ to stabilize anaerobic digestion of food waste: dosage optimization and long‐term study

Capson-Tojo

Girard

Rouez

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Although anaerobic digestion is a promising alternative for the valorization of complex substrates such as food waste, this process is yet to be optimized and options for its stabilization must be developed. This study assessed for the first time if the combined addition of biochar and trace elements in the form of an industrial FeCl3 solution could serve as a method for stabilizing food waste anaerobic digestion. Both batch and long‐term semi‐continuous reactors were run. RESULTS Results from batch reactors demonstrated that supplementation of both biochar (10–100 g L−1) and trace elements (FeCl3; 0.1–0.2 g Fe L−1) favored the digestion kinetics. Their addition improved the maximum methane production rates (from 897 up to 1494 mL day−1) and the average daily methane production rates (from 298 up to 369 mL day−1), related to acetate and propionate consumption, respectively. Continuous reactors confirmed the batch results, with higher methane production rates (up to 1.75 L L−1 day−1) and lower concentrations of acetate and propionate when biochar and trace elements (FeCl3) were added. CONCLUSION Addition of biochar and industrial FeCl3 favored the digestion kinetics, improving volatile fatty acid consumption and methane production rates. These materials appear as an economically‐feasible alternative for stabilizing the valorization of food waste at industrial scale. © 2018 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Addition of biochar and trace elements in the form of industrial FeCl₃ to stabilize anaerobic digestion of food waste: dosage optimization and long‐term study

Capson-Tojo

Girard

Rouez

et al. 2018

J of Chemical Tech & Biotech

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“…Many studies delineated the merits of the liquid (digestate with total solid (TS) range of 0.5 to 15%) and solid (digestate with TS > 15%) residues [9] as bio-fertilizers [10,11]. Recently, energy extraction from digestate using pyrolysis is reported as another sustainable management measure [12,13] to extract energy from this bio-resistant or non-biodegradable organic product of the AD system. The soil enhancement and the other environmental potentials of the biochar (black carbonaceous residue) from the thermochemical process [14,15] are thus exploited.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

et al. 2017

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Abstract:The environmental performance of industrial anaerobic digestion (AD), pyrolysis, and integrated system (AD sequence with pyrolysis) on food waste treatment were evaluated using life cycle assessment. The integrated treatment system indicated similar environmental benefits to AD with the highest benefits in climate change and water depletion in addition to the increased energy generation potential and the production of valuable products (biochar and bio-oil). Pyrolysis results illustrated higher impact across water, fossil fuel, and mineral depletion, although still providing a better option than conventional landfilling of food waste. The dewatering phase in the AD process accounted for 70% of the treatment impact while the pre-treatment of the food waste was responsible for the main burden in the pyrolysis process. The study indicated that the three treatment options of food waste management are environmentally more favorable than the conventional landfilling of the wastes.

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“…Pyrolysis of solid AD digestate can extract additional energy from this residual material, by conversion into syngas, bio-oil and biochar fractions, which can be further used for electricity generation. According to Monlau et al (2015) this kind of system can provide a 42% increase in the production of electricity compared to stand-alone AD plants. The resulting biochar can also be used for soil amendment, and carbon sequestration (Fabbri and Torri, 2016;Feng and Lin, 2017).…”

Section: Introductionmentioning

confidence: 99%

A research challenge vision regarding management of agricultural waste in a circular bio-based economy

Gontard

Sonesson

Birkved

et al. 2018

Critical Reviews in Environmental Science and Technology

231

127

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Agricultural waste is a huge pool of untapped biomass resources that may even represent economic and environmental burdens. They can be converted into bioenergy and bio-based products by cascading conversion processes, within circular economy, and should be considered residual resources. Major challenges are discussed from a transdisciplinary perspective, focused on Europe situation. Environmental and economic consequences of agricultural residue management chains are difficult to assess due to their complexity, seasonality and regionality. Designing multi-criteria decision support tools, applicable at an early-stage of research, is discussed. Improvement of Anaerobic Digestion (AD), one of the most mature conversion technologies, is discussed from a technological point of view and waste feedstock geographical and seasonal variations. Using agricultural residual resources for producing high-value chemicals is a considerable challenge analysed here, taking into account innovative eco-efficient and cost-effective cascading conversion processes (bio-refinery concept). Moreover, the promotion of agricultural residuesbased business is discussed through industrial ecology, to promote synergy, on a local basis, between different agricultural and industrial value chains. Finally, to facilitate a holistic approach and optimise materials and knowledge flows KEY WORDS Agriculture; waste; eco-design; biogas; bio-based materials; circular economy CONTACT Nathalie Gontard nathalie.gontard@inra.fr UMR 1208 IATE Agro-Polymer Engineering and Emerging Technologies,

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A new concept for enhancing energy recovery from agricultural residues by coupling anaerobic digestion and pyrolysis process

Cited by 217 publications

References 34 publications

Addition of biochar and trace elements in the form of industrial FeCl₃ to stabilize anaerobic digestion of food waste: dosage optimization and long‐term study

Addition of biochar and trace elements in the form of industrial FeCl₃ to stabilize anaerobic digestion of food waste: dosage optimization and long‐term study

Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

A research challenge vision regarding management of agricultural waste in a circular bio-based economy

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A new concept for enhancing energy recovery from agricultural residues by coupling anaerobic digestion and pyrolysis process

Cited by 217 publications

References 34 publications

Addition of biochar and trace elements in the form of industrial FeCl3 to stabilize anaerobic digestion of food waste: dosage optimization and long‐term study

Addition of biochar and trace elements in the form of industrial FeCl3 to stabilize anaerobic digestion of food waste: dosage optimization and long‐term study

Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

A research challenge vision regarding management of agricultural waste in a circular bio-based economy

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Addition of biochar and trace elements in the form of industrial FeCl₃ to stabilize anaerobic digestion of food waste: dosage optimization and long‐term study

Addition of biochar and trace elements in the form of industrial FeCl₃ to stabilize anaerobic digestion of food waste: dosage optimization and long‐term study