Process evaluation of mild hydrothermal carbonization to convert wet biomass residue streams into intermediate bioenergy carriers

Shah, Sayujya; Dijkstra, Jan Wilco; Wray, Heather E.

doi:10.1016/j.biombioe.2023.107036

Cited by 4 publications

(3 citation statements)

References 36 publications

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“…The LCA modelling of the system has been based on conceptual process design and modelling study for the systems considered [21], based on experimental work at pilot scale [20,22].…”

Section: Life Cycle Inventorymentioning

confidence: 99%

“…The project aims to convert wet biogenic residues into intermediate bioenergy carriers (fuel pellets) via hydrothermal treatment. The concept consists of an integrated process for mild hydrothermal carbonization (i.e., TORWASH ® , manufactured at TNO, Petten, The Netherlands) with low-temperature conversion of the biomass and full utilization of both the solids stream and the liquids stream, as well as compares three feedstocks using direct input from experiments and process modelling [20][21][22]. The F-CUBED production system includes the integration of the hydrothermal pretreatment with densification of the solid fraction, i.e., pelletization, to improve the logistics and sustainability aspects of the supply chain [9,23] and the anaerobic digestion of the liquid fraction.…”

Section: Introductionmentioning

confidence: 99%

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Environmental Assessment of Hydrothermal Treatment of Wet Bio-Residues from Forest-Based and Agro-Industries into Intermediate Bioenergy Carriers

Ugolini,

Recchia,

Wray

et al. 2024

Energies

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Hydrothermal carbonization (HTC) of low quality, wet biogenic residues into intermediate bioenergy carriers can potentially contribute to a more flexible and stable renewable energy system and reduce environmental impacts compared to current residue disposal practices. This study quantifies the environmental impacts via life cycle assessment (LCA) of a novel hydrothermal process for the treatment on an industrial scale of application of three wet biogenic residues (paper bio-sludge, olive pomace, and orange peel) into bioenergy carriers, i.e., solid pellets and biogas. A comprehensive attributional cradle-to-gate life cycle assessment (LCA) was conducted; the life cycle impact assessment (LCIA) utilised the ReCiPe impact assessment method. A selection of 10 significant impact categories was prioritised. Reliability of this categorization was also ensured through a sensitivity analysis carried out using Monte Carlo simulation. Climate change, particulate matter formation and terrestrial acidification impact categories showed the highest reliability, while for freshwater ecotoxicity and freshwater eutrophication impact categories in the study suggest the need for more robust data and further investigation. The climate change impact category presents the following values, as kg CO2eq/tresidue: pulp and paper bio-sludge (PPB), 17.9; olive pomace (OP), −1290; orange peel (ORP), −1301. The LCA study compared electricity yields of the hydrothermal treatment process with conventional treatment processes for each of the target residue streams. The environmental performance of the proposed hydrothermal treatment benefits significantly from the combination of intermediate bioenergy carriers (pellets) from the solid fraction with biogas production from the liquid fraction. Avoided emissions due to the heat recovery provide further environmental benefits. The LCIA results show that the carbon footprint of the F-CUBED production system, as kgCO2eq/kWhe, accounts for –4.56, −0.63, and −0.25 for paper bio-sludge, olive pomace and orange peel, respectively.

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“…The LCA modelling of the system has been based on conceptual process design and modelling study for the systems considered [21], based on experimental work at pilot scale [20,22].…”

Section: Life Cycle Inventorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Environmental Assessment of Hydrothermal Treatment of Wet Bio-Residues from Forest-Based and Agro-Industries into Intermediate Bioenergy Carriers

Ugolini,

Recchia,

Wray

et al. 2024

Energies

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show abstract

“…One of the factors that is currently limiting the implementation of the HTC technology is the lack of knowledge on continuous pilot-scale operation. We have previously reported the successful hydrothermal treatment of biosludge from a paper mill in a continuous flow-through (TORWASH ® ) reactor [48] and a process model which showed a much more efficient feedstock utilization for the production of energy [49]. An overall block diagram of the continuous treatment of wet organic residue streams to solid hydrochar is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Continuous Hydrothermal Carbonization of Olive Pomace and Orange Peels for the Production of Pellets as an Intermediate Energy Carrier

Zijlstra,

Visser,

Cobussen-Pool

et al. 2024

Sustainability

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The ever-increasing volumes of food waste generated and the associated environmental issues require the development of new processing methods for these difficult waste streams. One of the technologies that can treat these waste streams directly is hydrothermal carbonization. In this work, olive pomace and orange peels were treated via a mild hydrothermal carbonization process (TORWASH®) in a continuous-flow pilot plant. For olive pomace, a solid yield of 46 wt% and a dry matter content of 58% for the solid press cakes were obtained during continuous operation for 18 days. For orange peels, the values were lower with 31 wt% solid yield and a 42% dry matter content during 28 days of continuous operation. These values corresponded fully with initial laboratory-scale batch experiments, showing the successful transformation from batch to continuous processing. The obtained hydrochar from both feedstocks showed an increase in higher heating value (HHV) and a significant reduction in ash content. Pellets produced from the solids met the requirements for industrial use, demonstrating a large increase in the deformation temperature and a significant reduction in the potassium and chlorine content compared to the original feedstock. These results indicate the excellent potential of these pellets for combustion applications.

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Reclaiming resources from disposable diapers: Closing the loop with hydrothermal carbonization and water reuse

Djaenudin,

Wresta,

Nilawati

et al. 2024

Energy Conversion and Management

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Process evaluation of mild hydrothermal carbonization to convert wet biomass residue streams into intermediate bioenergy carriers

Cited by 4 publications

References 36 publications

Environmental Assessment of Hydrothermal Treatment of Wet Bio-Residues from Forest-Based and Agro-Industries into Intermediate Bioenergy Carriers

Environmental Assessment of Hydrothermal Treatment of Wet Bio-Residues from Forest-Based and Agro-Industries into Intermediate Bioenergy Carriers

Continuous Hydrothermal Carbonization of Olive Pomace and Orange Peels for the Production of Pellets as an Intermediate Energy Carrier

Reclaiming resources from disposable diapers: Closing the loop with hydrothermal carbonization and water reuse

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