Recent developments in biohythane production from household food wastes: A review

Bolzonella, David; Battısta, Federico; Cavınato, Cristina; Gottardo, Marco; Mıcoluccı, Federico; Lyberatos, Gérasimos; Pavan, Paolo

doi:10.1016/j.biortech.2018.02.092

Cited by 142 publications

(41 citation statements)

References 79 publications

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“…As pretreatment of the biogas to analyse, an hydraulic guard has been established to remove as H 2 S as possible. Hydrogen content was determined by a gas-chromatograph (GC Agilent Technology 6890 N) equipped with the column HP-PLOT MOLESIEVE, 30 × 0.53 mm ID × 25 μm film, using a thermal conductivity detector and argon as gas carrier [9].…”

Section: Discussionmentioning

confidence: 99%

“…Considering this scenario, we applied a multi-feedstock and multi-purpose biorefinery derived from the typical anaerobic digestion process [8] in order to recover an interesting biofuel like bio-hythane, a mix of hydrogen and methane [9], and bio-based chemicals, like volatile fatty acids [10,11] as precursors of polyhydrxyalkanoates [12,13]. In fact, it is reported that producing biobased molecules from agro-waste instead of biofuels creates double economic added value [14].…”

Section: Introductionmentioning

confidence: 99%

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A Multiproduct Biorefinery Approach for the Production of Hydrogen, Methane and Volatile Fatty Acids from Agricultural Waste

Righetti¹,

Nortilli²,

Fatone

et al. 2020

Waste Biomass Valor

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A pilot scale biorefinery platform for the treatment of agro-waste and the production of hydrogen, methane and volatile fatty acids was studied in real environment. The system adopted was a two stage anaerobic process where hydrogen and volatile fatty acids were produced in the first phase (fermentation) and methane in the second one (digestion). The study demonstrated the possibility to produce a biogas composed by hydrogen and methane (10% and 55%, respectively) while recovering volatile fatty acids. The yield for acids production was equivalent to 0.13 gVFA/gTVS (as COD) with acetate and butyrate as dominant observed species.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Multiproduct Biorefinery Approach for the Production of Hydrogen, Methane and Volatile Fatty Acids from Agricultural Waste

Righetti¹,

Nortilli²,

Fatone

et al. 2020

Waste Biomass Valor

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“…This property is exploited when AD is conducted in two stages, consisting in the separation of acidogenic phase from methanogenic one in two different reactors. In this case, rich ammonia digestate from methanogenic reactor is partially recirculated in the acidogenic phase to avoid a pH decreasing towards inhibiting values [2].…”

Section: Ph Ts and Vs Concentrationsmentioning

confidence: 99%

“…In this context, anaerobic digestion (AD) became the main biotechnology for the organic matter exploitation and conversion into biogas. Its success is easily explainable considering the possibility to adopt different typologies of biomasses as raw materials (livestock manure, lignocellulosic biomass, food waste, waste activated, sludge, organic fraction of municipal solid waste (OFMSW), fruit and vegetable waste, industrial waste and bio-waste) and by the management simplicity of this technology [2,3]. The main byproduct of the AD process is represented by the digestate, a solid-liquid mixture containing the biomass and the non-digested recalcitrant organic materials.…”

Section: Introductionmentioning

confidence: 99%

Exploitation of Solar Energy for Ammonium Sulfate Recovery from Anaerobic Digestate of Different Origin

Battısta

Bolzonella

2019

Waste Biomass Valor

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Digestate represents the semi-liquid byproduct of the anaerobic digestion process. It was estimated that 56 Mtonnes of digestate are annually produced only in Europe. Digestate composition depends on the initial total solids (TS) mixture fed to the digester and by its origin (manure, food wastes, agricultural residues, wastewater sludge). Typical values for the different components include a stabilized organic matter content between 20 and 50 g/L, a good content of nitrogen compounds (2-8 g/kg) and of phosphorous compounds (up to 3 g/kg). In particular, ammonia presence in digestate is interesting for ammonium sulfate production, a fertilizer which favors plants' growth. Traditional ammonium sulfate synthesis is conducted by stripping followed by sulfuric acid absorption, a process which requires high energy and chemicals consumptions. This work investigates the exploitation of solar energy to evaporate the liquid phase of digestate in a lab-scale greenhouse. Digestate vapors, rich in ammonia, are sent in a Drechsler trap, filled with 38% w/w sulfuric acid solution, through three solar air fans. The process has been tested on digestates differing for TS content and origin. It emerged that the process is favored by digestates with high ammonia content, as those originated from manure, and a TS content of about 10% w/w, which allowed to obtain an ammonium sulfate concentration of about 2 M in the final solution. Statement of NoveltyTraditional ammonium sulfate production from digestate requires a previous solid/liquid separation, further polishing of the liquid phase, followed by stripping and absorption in a sulfuric acid solution. This process is characterized by high energy consumption to heat the digestate and by high reagents consumption. This work proposes an innovative and an environmental sustainable way for the ammonium sulfate recovery from digestate, without a previous solid/ liquid separation. In particular, solar energy is exploited to dry the digestate and to recover ammonia vapors, which are sent to a trap containing H 2 SO 4 to allow the ammonium sulfate production.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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“…Although hythaneV R fuel is already used in several countries worldwide (USA, India), hythane V R production at an industrial scale is only achieved by catalytic methods with high energy requirements. A competitive value of 1.5 e/kg of hydrogen (yield 10 moles H 2 /mole of glucose, feedstock below 0.05 e/kg) could be targeted with this technology (Bolzonella et al, 2018).…”

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

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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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Recent developments in biohythane production from household food wastes: A review

Cited by 142 publications

References 79 publications

A Multiproduct Biorefinery Approach for the Production of Hydrogen, Methane and Volatile Fatty Acids from Agricultural Waste

A Multiproduct Biorefinery Approach for the Production of Hydrogen, Methane and Volatile Fatty Acids from Agricultural Waste

Exploitation of Solar Energy for Ammonium Sulfate Recovery from Anaerobic Digestate of Different Origin

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

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