Comparative techno-economic assessment and LCA of selected integrated sugarcane-based biorefineries

Gnansounou, Edgard; Vaskan, Pavel; Pachón, Elia Ruiz

doi:10.1016/j.biortech.2015.07.072

Cited by 102 publications

(31 citation statements)

References 19 publications

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“…This method was synthesized in four interrelated phases: goal and scope definition, inventory analysis, impact evaluation, and interpretation [24,25].…”

Section: Methodsmentioning

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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“…This method was synthesized in four interrelated phases: goal and scope definition, inventory analysis, impact evaluation, and interpretation [24,25].…”

Section: Methodsmentioning

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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“…Some useful parameters that can be used to calculate the economic assessment of a biorefinery are capital cost (or fixed capital investment), operating cost (operating expenses), net present value (NPV), return on investment (ROI), discounted payback period (DPBP), payback period (PBP), internal rate of return (IRR), and gross margin (or economic margin, profit margin), which can be estimated using computer programs such as economic analyzers . Plant capacity and mass and energy balances are the basis for the estimation of costs.…”

Section: Economic Assessmentmentioning

confidence: 99%

Methods for designing and assessing biorefineries: Review

Aristizábal-Marulanda

Álzate

2018

Biofuels Bioprod Bioref

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This is a review of work on the potential of biorefineries. First, it considers the concept of a refinery, the differences between biomass and oil, and the advantages of a biorefinery over a refinery. It goes on to describe the bio‐based economy and biorefinery concepts, and to discuss its origin as a promising alternative to dependence on non‐renewable feedstocks. It provides an exhaustive description of the classification of biorefineries, considering aspects such as systems, technological implementation status, size, feedstocks, platforms, products, and conversion processes. It outlines the main methodologies for designing biorefineries – conceptual design, optimization, and the ‘early stage’ method. Methodologies for the economic, environmental, and social assessment of a biorefinery are presented. Finally, challenges linked to the implementation of biorefinery projects at industrial level are discussed. The authors conclude that the methodologies of conceptual design and optimization must complement each other to achieve a robust design from a conceptual and mathematical point of view. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…A companion study on the energetic and environmental performances of different biomass technologies concluded that the highest EEs were obtained in the case of integrated solid fuel and biogas from biomass 23 . Strong environmental and economic performance has also been documented from integrated bioenergy plants relative to standalone bioenergy plants 24–28 . With regard to EROIs, several studies concluded that biofuels and bioenergy are net energy providers 29–31 .…”

Section: Introductionmentioning

confidence: 99%

Green proteins: An energy‐efficient solution for increased self‐sufficiency in protein in Europe

Djomo

Knudsen

Martinsen

et al. 2020

Biofuels Bioprod Bioref

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The heavy reliance of the livestock industry of the European Union (EU) on feed protein imports has initiated a transition to alternative protein sources such as grass proteins. Green biorefineries (which process grass into protein and other related bio-products) are gaining interest in the EU as the EU searches for ways to cut its import of feed proteins, to reduce its reliance on fossil fuels, and to combat climate change. However, the vulnerability of green biorefineries to fossil energy constraints has not been studied. We estimated the energy conversion efficiencies (EE) and the energy return on investment (EROI) of bio-products from standalone (SGBR) and integrated grass refinery (IGBR) systems using scenario and energy analysis. The base scenario assumes an SGBR that processes grass into protein, fiber, and brown juice. The three IGBR scenarios assume that grass is processed into protein, fiber, and biomethane (Scenario 1); into protein, fiber, heat, and electricity (Scenario 2); or into protein, fiber, heat, and biomethane (Scenario 3). We found that the EE of the IGBR (83%-85%) largely exceeded that of the SGBR (77%) in all cases. Energy returns on investment were lower for grass than for clover-grass because of the high fertilizer needs of the former. The standard EROIs (EROI std ) for grass protein ranged from 1.6 to 5.4 over the various feedstocks and scenarios evaluated. The EROI std decreased when the system boundary was expanded to the point of use (EROI pou ), or when they were adjusted for quality (EROI qly ). Other bioproducts from both SGBR and IGBR also had high EROI std , and showed similar patterns to that of grass protein (i.e., EROI std > EROI pou > EROI qly ). Although Scenario 1 had a high EE relative to the base scenario, its heavy reliance on auxiliary energy inputs reduced the EROIs of its products. Our analysis showed the strong impacts of brown-juice recycling in the energy performance of green biorefinery. It thus deserves close attention when designing and implementing a green biorefinery in a given region. 606S Njakou Djomo et al.Modeling and Analysis: Energy Balance of Green Protein With favorable economic conditions, green biorefineries could contribute to the reduction of food and energy insecurity in Europe in a sustainable way.

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Comparative techno-economic assessment and LCA of selected integrated sugarcane-based biorefineries

Cited by 102 publications

References 19 publications

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

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

Methods for designing and assessing biorefineries: Review

Green proteins: An energy‐efficient solution for increased self‐sufficiency in protein in Europe

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