Exergoenvironmental assessment of hydrogen water footprint via steam reforming in Brazil

Souza, Túlio Augusto Zucareli de; Rocha, Danilo Henrique Donato; Julio, Alisson Aparecido Vitoriano; Coronado, Christian Jeremi R.; Silveira, José Luz; Silva, Rogério José da; Palácio, José Carlos Escobar

doi:10.1016/j.jclepro.2021.127577

Cited by 21 publications

(7 citation statements)

References 57 publications

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“…The steam reforming of methane presented the lowest water footprint per kg of H 2 produced (0.257 m 3 /kg H 2 ), followed by glycerol (0.768 m 3 /kg H 2 ) and bioethanol reforming (9.651 m 3 /kg H 2 ). The exergo-environmental analysis shows that the main bottlenecks identified are related to exergy destruction in the burners (52.46-57.32%), reformers (2.48-21.72%) and heat exchangers (19.45-32.61%), which are all aspects to be considered during optimisation of this process [86]. Thus, preventing external water addition through the use of diluted bioethanol improves the water footprint of the process, together with the heat integration and energy efficiency of the system.…”

Section: Design and Validation Of Integrated Plants For Hydrogen Production By Ethanol Srmentioning

confidence: 99%

Catalytic Production of Renewable Hydrogen for Use in Fuel Cells: A Review Study

Rossetti

Tripodi

2022

Top Catal

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Hydrogen production from renewable sources is gaining increasing importance for application as fuel, in particular with high efficiency and low impact devices such as fuel cells. In addition, the possibility to produce more sustainable hydrogen for industrial application is also of interest for fundamental industrial processes, such as ammonia and methanol synthesis. Catalytic processes are used in most options for the production of hydrogen from renewable sources. Catalysts are directly involved in the main transformation, as in the case of reforming and of electro-/photo-catalytic water splitting, or in the upgrade and refining of the main reaction products, as in the case of tar reforming. In every case, for the main processes that reached a sufficiently mature development stage, attempts of process design, economic and environmental impact assessment are presented, on one hand to finalise the demonstration of the technology, on the other hand to highlight the challenges and bottlenecks. Selected examples are described, highlighting whenever possible the role of catalysis and the open issues, e.g. for the H2 production from reforming, aqueous phase reforming, biomass pyrolysis and gasification, photo- and electro-catalytic processes, enzymatic catalysis. The case history of hydrogen production from bioethanol for use in fuel cells is detailed from the point of view of process design and techno-economic validation. Examples of steady state or dynamic simulation of a centralised or distributed H2 production unit are presented to demonstrate the feasibility of this technology, that appears as one of the nearest to market. The economic feasibility seems demonstrated when producing hydrogen starting from diluted bioethanol.

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Section: Design and Validation Of Integrated Plants For Hydrogen Production By Ethanol Srmentioning

confidence: 99%

Catalytic Production of Renewable Hydrogen for Use in Fuel Cells: A Review Study

Rossetti

Tripodi

2022

Top Catal

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“…[14] This makes necessary, analysis tools that allow for the qualification of both refinery and biorefinery processes to determine their technical feasibility and sustainability from economical, energy, and environmental points of view. In this context, the use of powerful analysis tools, like life cycle analysis (LCA) [15] or exergy analysis (ExA), [16] or their combination in exergoenvironmental analysis, [17][18][19] allows a thorough assessment of the sustainability of a process and its fair comparison with analogous processes, producing the same or similar products.…”

Section: Introductionmentioning

confidence: 99%

Integrated Environmental and Exergoeconomic Analysis of Biomass‐Derived Maleic Anhydride

Blanco

Linares

Granados

et al. 2022

Advanced Sustainable Systems

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Life cycle analysis and exergy analysis are applied to compare the production of maleic anhydride from different feedstock, both biomass‐ and petrochemical‐derived raw materials, in order to evaluate the sustainability of alternative biorefinery processes to conventional routes. The considered processes involve two options: gas and aqueous phase furfural oxidation with oxygen (air) and hydrogen peroxide as oxidants, respectively, considered as sustainable technologies because of the use of renewable feedstock. Conventional routes, used as benchmarks, include the current production processes using benzene or butane as raw materials. The results show that the aqueous phase process is far from being viable from an energy and environmental point of view due to the high exergy destruction and the use of H2O2 as oxidant (whose production entails important environmental drawbacks). On the contrary, the gas phase oxidation of furfural shows competitive results with petrochemical technologies. Nevertheless, the major environmental drawback of the new furfural‐to‐maleic anhydride production processes is detected on the environmental profile of the starting raw material. The results suggest that a better environmental footprint for maleic anhydride production in gas phase can be obtained if environmentally friendly furfural production technologies are used at the commercial scale.

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“…Ethanol reforming was another technology analysed to obtain H 2 . For this analysis, data from Souza et al [15] was used to estimate the H 2 production and their energy requirements. In the same way, as in Case II, ethanol is sent to the reforming reactor, while the thermal energy demands were fulfil burning the off-gas from PSA and sugarcane bagasse.…”

Section: Case III -Ethanol Reformingmentioning

confidence: 99%

Energy Evaluation of Hydrogen Production Integrated into the Ethanol and Sugar Production Process

Bereche

Silva

Aguilera

et al. 2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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The sugarcane industrial sector is one of the main Brazilian economic activities due to its high efficiency and competitiveness, producing ethanol and sugar for internal and external markets. On the other hand, green hydrogen, produced from renewable energy, has emerged as a promising climate-neutral energy carrier over the last years; thus, several countries have published hydrogen roadmaps and are supporting the development of a hydrogen economy. Currently, hydrogen is produced mainly from natural gas through a reformation process; the refineries and the chemical industry are the main hydrogen consumers on the demand side. This hydrogen, produced from natural gas or methane without capturing the greenhouse gases made in the process, is classified as Grey hydrogen. In this way, in this study, the integration of Green hydrogen production into the conventional ethanol and sugar production process is proposed to use in the hydrotreatment of bio-oil produced via fast pyrolysis of sugarcane straw. Nevertheless, the sustainability and efficiency of the integrated process depend on the route adopted for hydrogen production. Thus, this study aims to perform an energy evaluation of different routes of hydrogen production and their integration into the ethanol and sugar production process from sugarcane. The different alternatives evaluated are: i) electrolysis using the surplus electricity in the process; ii) steam reforming of biogas produced from vinasse; iii) steam reforming of part of the ethanol produced. Furthermore, the impacts on the cogeneration system of the production process will also be evaluated.From the evaluated cases, ethanol reforming presented the lowest water consumption (14.1 L/t cane) and the lowest impact in cogeneration system (-6.3% in surplus electricity). Nevertheless Case III requires the consumption of 27.7% of the total ethanol produced in the mill.

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Exergoenvironmental assessment of hydrogen water footprint via steam reforming in Brazil

Cited by 21 publications

References 57 publications

Catalytic Production of Renewable Hydrogen for Use in Fuel Cells: A Review Study

Catalytic Production of Renewable Hydrogen for Use in Fuel Cells: A Review Study

Integrated Environmental and Exergoeconomic Analysis of Biomass‐Derived Maleic Anhydride

Energy Evaluation of Hydrogen Production Integrated into the Ethanol and Sugar Production Process

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