Potential of the sewage sludge valorization in Scandinavia by co-digestion with other organic wastes: A techno-economic assessment

Fernando-Foncillas, Clara; Varrone, Cristiano

doi:10.1016/j.jclepro.2021.129239

Cited by 14 publications

(6 citation statements)

References 39 publications

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“…In this substudy, two software packages (SuperPro Designer and ASPEN Plus Process Simulator) were used to develop large-scale simulation models for producing bioethanol from FW via biocatalytic and catalytic processes. The SuperPro Designer specialized for the modeling of the biocatalytic process was used for the simulation of AA and biogas production from food waste. , In addition, the ASPEN Plus Process Simulator specialized for modeling the catalytic conversion and separation was used for the simulation of AA extraction and conversion to produce bioethanol. , …”

Section: Methodsmentioning

confidence: 99%

“…The SuperPro Designer specialized for the modeling of the biocatalytic process was used for the simulation of AA and biogas production from food waste. 32,33 In addition, the ASPEN Plus Process Simulator specialized for modeling the catalytic conversion and separation was used for the simulation of AA extraction and conversion to produce bioethanol. 34,35 The AD treatment process for FW-to-AA was simulated using the SuperPro Designer software v10 (Figure 2).…”

Section: ■ Methodsmentioning

confidence: 99%

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Carbon-Negative Food Waste-Derived Bioethanol: A Hybrid Model of Life Cycle Assessment and Optimization

Byun

Kwon

Kim

et al. 2022

ACS Sustainable Chem. Eng.

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Food waste (FW) can be converted to bioethanol via anaerobic digestion (AD) and catalytic biorefinery processes, and bioethanol can be used as a vehicle fuel. In the present study, a hybrid model framework combining three different models (i.e., process simulation, life cycle assessment (LCA), and supply-chain network (SCN) optimization) is proposed to assess the environmental impacts on FW-based vehicle operation. First, a conceptual design of a large-scale process is simulated for AD and biorefinery processes. The overall energy efficiency of the integrated AD and biorefinery process is estimated to be 16.2%. A "well-to-wheel" LCA of FW-based bioethanol production and vehicle operation in South Korea in 2030, which is a new FW scenario, is performed and compared with the LCA of conventional FW treatment and gasoline-fuel vehicle operation. The LCA results show that the global warming (GW) impacts of the new FW scenario are carbon-negative (−5.58 kg CO 2 equiv. per 1 gal of bioethanol) and 14.1% lower than the GW impacts of the conventional scenario. An integrated SCN optimization model for "well-to-pump" FW-derived bioethanol production and "pump-to-wheel" vehicle operation is then proposed to minimize the total GW impact by simultaneously optimizing both strategic FW management and vehicle operation planning decisions. Three real policy-driven scenario studies (according to the utilization rate of FW valorization to vehicle fuel) were analyzed by the developed hybrid model, and the results show that the GW impacts of each scenario are −0.69, −0.99, and −1.29 kg CO 2 equiv. per 1 gal of bioethanol, leading to carbon-negative impacts by 2030.

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Section: Methodsmentioning

confidence: 99%

Section: ■ Methodsmentioning

confidence: 99%

Carbon-Negative Food Waste-Derived Bioethanol: A Hybrid Model of Life Cycle Assessment and Optimization

Byun

Kwon

Kim

et al. 2022

ACS Sustainable Chem. Eng.

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“…A recent study by Fernando Foncillas et al [35] underlined the importance of public subsidies in the development of economically viable biorefineries. Clearly, dedicated subsidies could facilitate the transition towards 2G plastic biorefineries as well, thus supporting the bio-based economy.…”

Section: The Contribution Of Policies To a More Circular Plastic Sectormentioning

confidence: 99%

Assessing the Economic Viability of the Plastic Biorefinery Concept and Its Contribution to a More Circular Plastic Sector

Roux

Varrone

2021

Polymers

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It is widely accepted that plastic waste is one of the most urgent environmental concerns the world is currently facing. The emergence of bio-based plastics provides an opportunity to reduce dependency on fossil fuels and transition to a more circular plastics economy. For polyethylene terephthalate (PET), one of the most prevalent plastics in packaging and textiles, two bio-based alternatives exist that are similar or superior in terms of material properties and recyclability. These are polyethylene furanoate (PEF) and polytrimethylene terephthalate (PTT). The overarching aim of this study was to examine the transition from fossil-based to renewable plastics, through the lens of PET upcycling into PEF and PTT. The process for the production of PEF and PTT from three waste feed streams was developed in the SuperPro Designer software and the economic viability assessed via a discounted cumulative cash flow (DCCF) analysis. A techno-economic analysis of the designed process revealed that the minimum selling price (MSP) of second generation-derived PEF and PTT is 3.13 USD/kg, and that utilities and the feedstock used for the production of 2,5-furandicarboxylic acid (FDCA) needed in PEF synthesis contributed the most to the process operating costs. The effect of recycling PEF and PTT through the process at three recycling rates (42%, 50% and 55%) was investigated and it was revealed that increased recycling could reduce the MSP of the 2G bio-plastics (by 48.5%) to 1.61 USD/kg. This demonstrates that the plastic biorefinery, together with increasing recycling rates, would have a beneficial effect on the economic viability of upcycled plastics.

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“…According to Directive 2009/28/EC defined by the European Parliament and Council, the term biomass has a larger meaning describing the biodegradable fraction of products, including wastes and residues from different industries such as agriculture, forestry, fisheries, and aquaculture, industrial and municipal1 waste of biological origin associated to energy/fuel production. − …”

Section: Introductionmentioning

confidence: 99%

Synthesis and Mechanical Performances of Polyurethane Bio-Based Adhesives Resulted from the Depolymerization of Lignocellulose Biomass

Rusen,

Toader,

Diacon

et al. 2023

ACS Omega

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The purpose of this study is to valorize biomass waste into products with added value for indoor applications. Thus, broadleaf sawdust was chemically processed by the solvolysis reaction in acid catalysis in the presence of diethylene glycol at 160 °C for 4 h. After filtration and removal of the unreacted biomass, the glycolysis product was used in 6 different polyurethane adhesive formulations for wood bonding. The adhesive films were characterized by FT-IR, TGA, and DMA, while the mechanical performances were investigated by tensile and three-point bending tests. An innovative method for the determination of the working time was proposed. After the displacement of the wood substrates by the tensile test, the bonded area was investigated by SEM analysis. To confirm a correlation between the mechanical performances of the adhesives and their structure/formulation, two-dimensional (2D) simulations were performed based on the tensile tests.

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Potential of the sewage sludge valorization in Scandinavia by co-digestion with other organic wastes: A techno-economic assessment

Cited by 14 publications

References 39 publications

Carbon-Negative Food Waste-Derived Bioethanol: A Hybrid Model of Life Cycle Assessment and Optimization

Carbon-Negative Food Waste-Derived Bioethanol: A Hybrid Model of Life Cycle Assessment and Optimization

Assessing the Economic Viability of the Plastic Biorefinery Concept and Its Contribution to a More Circular Plastic Sector

Synthesis and Mechanical Performances of Polyurethane Bio-Based Adhesives Resulted from the Depolymerization of Lignocellulose Biomass

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