Gasification versus fast pyrolysis bio-oil production: A life cycle assessment

Alcazar-Ruiz, A.; Dorado, Fernando; Sánchez-Silva, L.

doi:10.1016/j.jclepro.2022.130373

Cited by 27 publications

(11 citation statements)

References 47 publications

(56 reference statements)

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“…As mentioned earlier, all the assessments were performed based on process simulations. Among fourteen studies that referred to their process software, eleven simulations were conducted using Aspen Plus ® (Aspen Technology, Inc., USA) versions 8.8, 11, 9 [21,68,69,73,[76][77][78][79][80][81][82]. The other three software were EASETECH [83], the integrated environmental control model (IECM) [84], and DeST [85].…”

Section: Discussionmentioning

confidence: 99%

“…Although both feedstock recycling paths decrease greenhouse gas emissions under similar production system assumptions, gasification resulted in a greater reduction than pyrolysis. Similarly, Alcazar-Ruiz et al [76] conducted a comparative life cycle study to measure the sustainability of two processes (gasification and fast pyrolysis) for bio-oil production from agricultural wastes. Separation stages were the primary contributors to all mid-point impact categories in the fast pyrolysis.…”

Section: Discussionmentioning

confidence: 99%

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A Scoping Review on Environmental, Economic, and Social Impacts of the Gasification Processes

Barahmand

Eikeland

2022

Environments

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In recent years, computer-based simulations have been used to enhance production processes, and sustainable industrial strategies are increasingly being considered in the manufacturing industry. In order to evaluate the performance of a gasification process, the Life Cycle Thinking (LCT) technique gathers relevant impact assessment tools to offer quantitative indications across different domains. Following the PRISMA guidelines, the present paper undertakes a scoping review of gasification processes’ environmental, economic, and social impacts to reveal how LCT approaches coping with sustainability. This report categorizes the examined studies on the gasification process (from 2017 to 2022) through the lens of LCT, discussing the challenges and opportunities. These studies have investigated a variety of biomass feedstock, assessment strategies and tools, geographical span, bioproducts, and databases. The results show that among LCT approaches, by far, the highest interest belonged to life cycle assessment (LCA), followed by life cycle cost (LCC). Only a few studies have addressed exergetic life cycle assessment (ELCA), life cycle energy assessment (LCEA), social impact assessment (SIA), consequential life cycle assessment (CLCA), and water footprint (WLCA). SimaPro® (PRé Consultants, Netherlands), GaBi® (sphere, USA), and OpenLCA (GreenDelta, Germany) demonstrated the greatest contribution. Uncertainty analysis (Monte Carlo approach and sensitivity analysis) was conducted in almost half of the investigations. Most importantly, the results confirm that it is challenging or impossible to compare the environmental impacts of the gasification process with other alternatives since the results may differ based on the methodology, criteria, or presumptions. While gasification performed well in mitigating negative environmental consequences, it is not always the greatest solution compared to other technologies.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

A Scoping Review on Environmental, Economic, and Social Impacts of the Gasification Processes

Barahmand

Eikeland

2022

Environments

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“…For instance, liquid fuels from agricultural/forestry biomass residues can be an alternative energy source and mitigate climate change, which is associated with consuming fossil energy resources. However, it is crucial to assess the advantages of employing biomass pyrolysis using practical, scientific, and reliable tools (Alcazar-Ruiz et al 2022). It has been determined that life cycle assessment is a thorough evaluation method for determining environmental consequences along the whole production chain (Al-Mawali et al 2021).…”

Section: Life Cycle Assessment Of Biomass Pyrolysismentioning

confidence: 99%

“…The reviewed literature used different functional units to present the respective findings, including biomass used as feedstock at the inlet of the pyrolysis plant (Yang et al 2021;Brassard et al 2021;Bora et al 2020;Ramos and Ferreira 2022); bioenergy produced (Alcazar-Ruiz et al 2022;Im-Orb and Arpornwichanop 2020;Batlle et al 2020;Cruz et al 2020;Cusenza et al 2021;Moreno et al 2022;Ringsred et al 2021;Mehta et al 2022;Lan et al 2021); quantity of biochemicals after the completion of processing (Thompson et al 2021;Wang et al 2020d;Zhou et al 2020b); quantity of bio-fuel and biochar produced (Fawzy et al 2022;Ramos and Ferreira 2022); and lastly, one year of operation of pyrolysis plant (Papageorgiou et al 2021).…”

Section: Goalmentioning

confidence: 99%

Materials, fuels, upgrading, economy, and life cycle assessment of the pyrolysis of algal and lignocellulosic biomass: a review

et al. 2023

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Climate change issues are calling for advanced methods to produce materials and fuels in a carbon–neutral and circular way. For instance, biomass pyrolysis has been intensely investigated during the last years. Here we review the pyrolysis of algal and lignocellulosic biomass with focus on pyrolysis products and mechanisms, oil upgrading, combining pyrolysis and anaerobic digestion, economy, and life cycle assessment. Products include oil, gas, and biochar. Upgrading techniques comprise hot vapor filtration, solvent addition, emulsification, esterification and transesterification, hydrotreatment, steam reforming, and the use of supercritical fluids. We examined the economic viability in terms of profitability, internal rate of return, return on investment, carbon removal service, product pricing, and net present value. We also reviewed 20 recent studies of life cycle assessment. We found that the pyrolysis method highly influenced product yield, ranging from 9.07 to 40.59% for oil, from 10.1 to 41.25% for biochar, and from 11.93 to 28.16% for syngas. Feedstock type, pyrolytic temperature, heating rate, and reaction retention time were the main factors controlling the distribution of pyrolysis products. Pyrolysis mechanisms include bond breaking, cracking, polymerization and re-polymerization, and fragmentation. Biochar from residual forestry could sequester 2.74 tons of carbon dioxide equivalent per ton biochar when applied to the soil and has thus the potential to remove 0.2–2.75 gigatons of atmospheric carbon dioxide annually. The generation of biochar and bio-oil from the pyrolysis process is estimated to be economically feasible.

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“…Hydrogen, as one of the prospective energy carriers, is expected to play an important role in on-board automobile applications; however, ∼95% of H 2 is currently produced via fossil resources of natural gas, coal, and naphtha, accompanied by corresponding carbon emission. , In contrast, biomass, as a carbon-neutral material with high availability, is an abundant resource for hydrogen production. − Based on fast pyrolysis, biomass can be easily converted to bio-oil, consisting of oil and aqueous phases, and value-added chemicals can be reclaimed in the oil phase, while the aqueous phase contains acetic acid (HAc) with content up to 30 wt % and thus presents a cheap and alternative feedstock for green H 2 production. , …”

Section: Introductionmentioning

confidence: 99%

Interface of Ni-MgCr₂O₄ Spinel Promotes the Autothermal Reforming of Acetic Acid through Accelerated Oxidation of Carbon-Containing Intermediate Species

Ding

Sun

et al. 2023

ACS Catal.

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Autothermal reforming (ATR) is an effective route for hydrogen production from acetic acid (HAc) derived from biomass. Ni-based catalysts are promising candidates for ATR due to their high activity, but coke formation hinders their practical application. To tackle this issue, a series of Ni-Mg-Cr catalysts with supports of Cr 2 O 3 or MgCr 2 O 4 were prepared by the sol−gel method and evaluated in ATR. The results indicated that as compared to the Ni-Cr 2 O 3 catalyst, the Ni 0.25 Mg 0.75 CrO 3.5±δ catalyst with MgCr 2 O 4 support presented higher catalytic performance: the conversion rate of acetic acid was stable near 100%, with hydrogen yield reaching 2.64 mol-H 2 /mol-HAc during a 40 h ATR test, while there was no obvious coking. It was found that Mg modification was prone to constituting a stable MgCr 2 O 4 spinel support with a high specific surface area for adsorption and transformation of HAc; however, for catalysts with excessive Mg addition, namely, Ni 0.43 Mg 2.56 CrO 4.5±δ and Ni 0.69 Mg 5.31 CrO 7.5±δ , low reactivity was found and was linked to constraining of Ni from the solid solution of Mg(Ni)O. Density functional theory (DFT) calculations reveal that during the ATR process, Ni 4 -MgCr 2 O 4 presents a low energy barrier for the overall transformation path and a high stabilization of reaction intermediates; furthermore, as compared to Ni 4 -Cr 2 O 3 , oxidation of C* species by O* and OH* is significantly accelerated on Ni 4 -MgCr 2 O 4 due to the considerably decreased energy barriers, thus eliminating carbon deposition and improving catalytic activity.

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Gasification versus fast pyrolysis bio-oil production: A life cycle assessment

Cited by 27 publications

References 47 publications

A Scoping Review on Environmental, Economic, and Social Impacts of the Gasification Processes

A Scoping Review on Environmental, Economic, and Social Impacts of the Gasification Processes

Materials, fuels, upgrading, economy, and life cycle assessment of the pyrolysis of algal and lignocellulosic biomass: a review

Interface of Ni-MgCr₂O₄ Spinel Promotes the Autothermal Reforming of Acetic Acid through Accelerated Oxidation of Carbon-Containing Intermediate Species

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Gasification versus fast pyrolysis bio-oil production: A life cycle assessment

Cited by 27 publications

References 47 publications

A Scoping Review on Environmental, Economic, and Social Impacts of the Gasification Processes

A Scoping Review on Environmental, Economic, and Social Impacts of the Gasification Processes

Materials, fuels, upgrading, economy, and life cycle assessment of the pyrolysis of algal and lignocellulosic biomass: a review

Interface of Ni-MgCr2O4 Spinel Promotes the Autothermal Reforming of Acetic Acid through Accelerated Oxidation of Carbon-Containing Intermediate Species

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Product

Resources

About

Interface of Ni-MgCr₂O₄ Spinel Promotes the Autothermal Reforming of Acetic Acid through Accelerated Oxidation of Carbon-Containing Intermediate Species