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Arfan, M., Eriksson, O., Wang, Z. & Soam, S. (2023). Life cycle assessment and life cycle costing of hydrogen production from biowaste and biomass in Sweden. Energy Conversion and Management, 291, Article ID 117262.
Åpne denne publikasjonen i ny fane eller vindu >>Life cycle assessment and life cycle costing of hydrogen production from biowaste and biomass in Sweden
2023 (engelsk)Inngår i: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. 291, artikkel-id 117262Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this study, an environmental and economic assessment of hydrogen production from biowaste and biomass is performed from a life cycle perspective, with a high degree of primary life cycle inventory data on materials, energy, and investment flows. Using SimaPro LCA software and CML-IA, 2001 impact assessment method, ten environmental impact categories are analyzed for environmental analysis. Economic analysis includes capital and operational expenditures and monetization cost of life cycle environmental impacts. The hydrogen production from biowaste has a high climate impact, photochemical oxidant, and freshwater eutrophication than biomass while it performs far better in ozone depletion, terrestrial ecotoxicity, abiotic depletion-fossil, abiotic depletion, human toxicity, and freshwater ecotoxicity. The sensitivity analysis of LCA results indicates that feedstock to biogas/pyrolysis-oil yields ratio and the type of energy source for the reforming process can significantly influence the results, particularly climate change, abiotic depletion, and human toxicity. The life cycle cost (LCC) of 1 kg hydrogen production has been accounted as 0.45–2.76 € with biowaste and 0.54–3.31 € with biomass over the plant's lifetime of 20 years. From the environmental impacts of climate change, photochemical oxidant, and freshwater eutrophication hydrogen production from biomass is a better option than biowaste while from other included impact categories and LCC perspectives it’s biowaste. This research contributes to bioresources to hydrogen literature with some new findings that can be generalized in Europe and even globally as it is in line with and endorse existing theoretical and simulation software-based studies.

sted, utgiver, år, opplag, sider
Elsevier, 2023
Emneord
Hydrogen, Biowaste, Biomass, Life cycle assessment, Life cycle cost, Fast pyrolysis, Anaerobic digestion
HSV kategori
Identifikatorer
urn:nbn:se:hig:diva-42521 (URN)10.1016/j.enconman.2023.117262 (DOI)001024612500001 ()2-s2.0-85162099378 (Scopus ID)
Tilgjengelig fra: 2023-06-27 Laget: 2023-06-27 Sist oppdatert: 2023-07-27bibliografisk kontrollert
Raj, T., Morya, R., Chandrasekhar, K., Kumar, D., Soam, S., Kumar, R., . . . Kim, S.-H. (2023). Microalgae biomass deconstruction using green solvents: Challenges and future opportunities. Bioresource Technology, 369, Article ID 128429.
Åpne denne publikasjonen i ny fane eller vindu >>Microalgae biomass deconstruction using green solvents: Challenges and future opportunities
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2023 (engelsk)Inngår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 369, artikkel-id 128429Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Microalgae enable fixation of CO2 into carbohydrates, lipids, and proteins through inter and intracellularly biochemical pathways. These cellular components can be extracted and transformed into renewable energy, chemicals, and materials through biochemical and thermochemical transformation processes. However, recalcitrant cell wall and lack of environmentally benign efficient pretreatment processes are key obstacles in the commercialization of microalgal biorefineries. Thus, current article describes the microalgal chemical structure, type, and structural rigidity and summarizes the traditional pretreatment methods to extract cell wall constituents. Green solvents such as ionic liquid (ILs), deep eutectic solvents (DES), and natural deep eutectic (NDESs) have shown interesting solvent characteristics to pretreat biomass with selective biocomponent extraction from microalgae. Further research is needed in task-specific IL/DES design, cation-anion organization, structural activity understanding of ILs-biocomponents, environmental toxicity, biodegradability, and recyclability for deployment of carbon-neutral technologies. Additionally, coupling the microalgal industry with biorefineries may facilitate waste management, sustainability, and gross revenue.

sted, utgiver, år, opplag, sider
Elsevier, 2023
Emneord
Microalgal biomass, pretreatment, ionic liquids, deep eutectic solvents, lipids
HSV kategori
Identifikatorer
urn:nbn:se:hig:diva-40594 (URN)10.1016/j.biortech.2022.128429 (DOI)000902095800010 ()36473586 (PubMedID)2-s2.0-85144447931 (Scopus ID)
Tilgjengelig fra: 2022-12-09 Laget: 2022-12-09 Sist oppdatert: 2023-09-08bibliografisk kontrollert
Silvestro, D., Zandén Kjellén, P., Dharmala, N., Soam, S. & Hillman, K. (2023). The role of hydrogen in mitigating global climate change. In: Frauke Urban and Johan Nordensvärd (Ed.), Handbook on Climate Change and Technology: (pp. 134-162). Elgar
Åpne denne publikasjonen i ny fane eller vindu >>The role of hydrogen in mitigating global climate change
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2023 (engelsk)Inngår i: Handbook on Climate Change and Technology / [ed] Frauke Urban and Johan Nordensvärd, Elgar , 2023, s. 134-162Kapittel i bok, del av antologi (Fagfellevurdert)
Abstract [en]

Climate change is challenging human life and infrastructures by modifying the environment in which we live at a difficult-to-adapt rate. The transition to a low carbon and sustainable society is key to avoid a further decline of the climate and the environment and can be achieved by adopting renewable energy sources. The necessary increase in renewable energy production faces challenges like identifying cost effective power storage solutions and adapting to inadequate electricity grid infrastructures. Renewable energy, however, cannot be the only solution for sectors that are hard to electrify. Green hydrogen from renewable-based electricity can represent a solution for decarbonization. Hydrogen, produced from renewable resources, storable, and with a high potential to replace fossil fuels in the most energy intensive, hard-to-decarbonize and polluting applications, can play a pivotal role in climate change mitigation.

sted, utgiver, år, opplag, sider
Elgar, 2023
Emneord
Hydrogen systems; Climate change; Electrolysis; Sector coupling; Sustainable transition; Decarbonisation
HSV kategori
Identifikatorer
urn:nbn:se:hig:diva-43546 (URN)2-s2.0-85189583128 (Scopus ID)9781800882102 (ISBN)9781800882119 (ISBN)
Tilgjengelig fra: 2024-01-09 Laget: 2024-01-09 Sist oppdatert: 2024-04-15bibliografisk kontrollert
Rani Singhania, R., Kumar Patel, A., Singh, A., Haldar, D., Soam, S., Chen, C.-W., . . . Dong, C.-D. (2022). Consolidated Bioprocessing of Lignocellulosic Biomass: Technological Advances and Challenges. Bioresource Technology, 354, Article ID 127153.
Åpne denne publikasjonen i ny fane eller vindu >>Consolidated Bioprocessing of Lignocellulosic Biomass: Technological Advances and Challenges
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2022 (engelsk)Inngår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 354, artikkel-id 127153Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Consolidated bioprocessing (CBP) is characterized by a single-step production of value-added compounds directly from biomass in a single vessel. This strategy has the capacity to revolutionize the whole biorefinery concept as it can significantly reduce the infrastructure input and use of chemicals for various processing steps which can make it economically and environmentally benign. Although the proof of concept has been firmly established in the past, commercialization has been limited due to the low conversion efficiency of the technology. Either a native single microbe, genetically modified microbe or a consortium can be employed. The major challenge in developing a cost-effective and feasible CBP process is the recognition of bifunctional catalysts combining the capability to use the substrates and transform them into value-added products with high efficiency. This article presents an in-depth analysis of the current developments in CBP around the globe and the possibilities of advancements in the future.

sted, utgiver, år, opplag, sider
Elsevier, 2022
Emneord
Consolidate bioprocessing, Bioenergy, Bioethanol, Lignocellulosic biomass, Cellulase
HSV kategori
Identifikatorer
urn:nbn:se:hig:diva-38441 (URN)10.1016/j.biortech.2022.127153 (DOI)000800566000009 ()35421566 (PubMedID)2-s2.0-85129560291 (Scopus ID)
Tilgjengelig fra: 2022-04-21 Laget: 2022-04-21 Sist oppdatert: 2022-06-09bibliografisk kontrollert
Singh, A., Singhania, R. R., Soam, S., Chen, C.-W., Haldar, D., Varjani, S., . . . Patel, A. K. (2022). Production of bioethanol from food waste: Status and perspectives. Bioresource Technology, 360, Article ID 127651.
Åpne denne publikasjonen i ny fane eller vindu >>Production of bioethanol from food waste: Status and perspectives
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2022 (engelsk)Inngår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 360, artikkel-id 127651Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

There is an immediate global requirement for an ingenious strategy for food waste conversion to biofuels in order to replace fossil fuels with renewable resources. Food waste conversion to bioethanol could lead to a sustainable process having the dual advantage of resolving the issue of food waste disposal as well as meeting the energy requirements of the increasing population. Food waste is increasing at the rate of 1.3 billion tonnes per year, considered to be one-third of global food production. According to LCA studies discarding these wastes is detritus to the environment, therefore; it is beneficial to convert the food waste into bioethanol. The CO2 emission in this process offers zero impact on the environment as it is biogenic. Among several pretreatment strategies, hydrothermal pretreatment could be a better approach for pretreating food waste because it solubilizes organic solids, resulting in an increased recovery of fermentable sugars to produce bioenergy.

sted, utgiver, år, opplag, sider
Elsevier, 2022
Emneord
Bioethanol, Biomass saccharification, LCA, Hydrothermal pretreatment, Consolidated bioprocessing
HSV kategori
Identifikatorer
urn:nbn:se:hig:diva-39634 (URN)10.1016/j.biortech.2022.127651 (DOI)000835657900001 ()35870673 (PubMedID)2-s2.0-85135711222 (Scopus ID)
Tilgjengelig fra: 2022-08-01 Laget: 2022-08-01 Sist oppdatert: 2022-08-22bibliografisk kontrollert
Arfan, M., Wang, Z., Soam, S. & Eriksson, O. (2021). Biogas as a transport fuel—a system analysis of value chain development in a Swedish context. Sustainability, 13(8), Article ID 4560.
Åpne denne publikasjonen i ny fane eller vindu >>Biogas as a transport fuel—a system analysis of value chain development in a Swedish context
2021 (engelsk)Inngår i: Sustainability, E-ISSN 2071-1050, Vol. 13, nr 8, artikkel-id 4560Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Biofuels policy instruments are important in the development and diffusion of biogas as a transport fuel in Sweden. Their effectiveness with links to geodemographic conditions has not been analysed systematically in studying biogas development in a less urbanised regions, with high potential and primitive gas infrastructure. One such region identified is Gävleborg in Sweden. By using value chain statistics, interviews with related actors, and studying biofuels policy instruments and implications for biogas development, it is found that the policy measures have not been as effective in the region as in the rest of Sweden due to different geodemographic characteristics of the region, which has resulted in impeded biogas development. In addition to factors found in previous studies, the less-developed biogas value chain in this region can be attributed particularly to undefined rules of the game, which is lack of consensus on trade-off of resources and services, unnecessary competition among several fuel alternatives, as well as the ambiguity of municipalities’ prioritization, and regional cultural differences. To strengthen the regional biogas sector, system actors need a strategy to eliminate blocking effects of identified local factors, and national policy instruments should provide mechanisms to process geographical conditions in regulatory, economic support, and market formation.

sted, utgiver, år, opplag, sider
MDPI, 2021
Emneord
Biogas, Policy instruments, System analysis, Transport, Value chain
HSV kategori
Forskningsprogram
Hållbar stadsutveckling
Identifikatorer
urn:nbn:se:hig:diva-35814 (URN)10.3390/su13084560 (DOI)000645367500001 ()2-s2.0-85105173915 (Scopus ID)
Tilgjengelig fra: 2021-05-17 Laget: 2021-05-17 Sist oppdatert: 2023-06-27bibliografisk kontrollert
Soam, S. & Börjesson, P. (2020). Considerations on potentials, greenhouse gas and energy performance of biofuels based on forest residues for heavy duty road transport in Sweden. Energies, 13(24), Article ID 6701.
Åpne denne publikasjonen i ny fane eller vindu >>Considerations on potentials, greenhouse gas and energy performance of biofuels based on forest residues for heavy duty road transport in Sweden
2020 (engelsk)Inngår i: Energies, E-ISSN 1996-1073, Vol. 13, nr 24, artikkel-id 6701Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This case study investigates the potentials, greenhouse gas (GHG), and energy performance of forest residue biofuels produced by new and emerging production technologies, which are commercially implemented in Sweden for heavy transport. The biofuel options included are ethanol (ED 95), hydro-processed vegetable oil (HVO), and liquefied biogas (LBG) produced from logging residues in forestry and sawdust generated in sawmills. The calculated life cycle GHG emissions, based on the EU Renewable Energy Directive calculation methodology, for all three pathways are in the range of 6–11 g CO2eq./MJ, corresponding to 88–94% GHG emission reductions as compared to fossil fuel. Critical parameters are the enzyme configuration for ethanol, hydrogen supply systems and bio-oil technology for HVO, and gasifier size for LBG. The energy input is ranging from 0.16 to 0.43 MJ/MJ biofuel and the total conversion efficiency from the feedstock to biofuel, including high-value by-products (excluding heat), varies between 61 and 65%. The study concludes that the domestic biofuel potential from estimated accessible logging residues and sawdust is equivalent to 50–100% of the current use of fossil diesel in heavy-duty road transport in Sweden, depending on the biofuel production technology selected and excluding energy by-products. Thus, an expansion of forest-based biofuels is a promising strategy to meet the ambitious climate goals in the transport sector in Sweden.

sted, utgiver, år, opplag, sider
Switzerland: MDPI, 2020
Emneord
logging residues; sawdust; ethanol; HVO; LBG; GHG emissions; energy efficiency; biofuel potential
HSV kategori
Forskningsprogram
Hållbar stadsutveckling
Identifikatorer
urn:nbn:se:hig:diva-34638 (URN)10.3390/en13246701 (DOI)000602749200001 ()2-s2.0-85101828503 (Scopus ID)
Tilgjengelig fra: 2021-01-02 Laget: 2021-01-02 Sist oppdatert: 2023-08-28bibliografisk kontrollert
Carlos-Pinedo, S., Wang, Z., Eriksson, O. & Soam, S. (2020). Study of the digestion process at a full-scale solid-state biogas plant by using ORWARE: Model modification and implementation. Waste Management, 107, 133-142
Åpne denne publikasjonen i ny fane eller vindu >>Study of the digestion process at a full-scale solid-state biogas plant by using ORWARE: Model modification and implementation
2020 (engelsk)Inngår i: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 107, s. 133-142Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The configuration of the reactor influences the digestion process and thus the product yields; other factors such as the rate of biogas production or biogas loss also affect the process specifically with high solid configuration. With these in mind, the ORganic WAste REsearch (ORWARE) anaerobic digestion sub-model was modified to be able to study solid-state anaerobic digestion (SS-AD) (using plug-flow reactor). The simulation results from the updated model agreed with the operational data with respect to methane yield, digestate yield and energy turnover. The model was found to be sensitive to changes in feedstock composition but to a lesser extent to changes in process temperature and retention time. By applying the model on several cases of liquid anaerobic digestion (L-AD), it was noticed that L-AD at mesophilic condition with 25 retention days seemed to be superior to other cases of L-AD with regard to energy turnover. However, even if similar methane production were observed for L-AD and SS-AD, the model suggested higher energy turnover for the case of SS-AD at thermophilic condition, being 10% more in average in comparison with cases of L-AD.

sted, utgiver, år, opplag, sider
Elsevier, 2020
Emneord
System assessment model, Solid-state anaerobic digestion, Full-scale, Methane production, Feedstock
HSV kategori
Forskningsprogram
Hållbar stadsutveckling
Identifikatorer
urn:nbn:se:hig:diva-32177 (URN)10.1016/j.wasman.2020.03.036 (DOI)000536511400015 ()32283487 (PubMedID)2-s2.0-85082933758 (Scopus ID)
Merknad

The financial support from the Gästrike Återvinnare Utveckling AB and the research foundation Gästrikeregionens miljö is gratefully acknowledged.

Tilgjengelig fra: 2020-04-21 Laget: 2020-04-21 Sist oppdatert: 2023-12-15bibliografisk kontrollert
Soam, S. & Hillman, K. (2019). Factors influencing the environmental sustainability and growth of hydrotreated vegetable oil (HVO) in Sweden. Bioresource Technology Reports, 7, Article ID 100244.
Åpne denne publikasjonen i ny fane eller vindu >>Factors influencing the environmental sustainability and growth of hydrotreated vegetable oil (HVO) in Sweden
2019 (engelsk)Inngår i: Bioresource Technology Reports, ISSN 2589-014X, Vol. 7, artikkel-id 100244Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The study analyzes the factors influencing the environmental sustainability and growth of hydrotreated vegetableoil (HVO) in Sweden. The major feedstocks identified in the HVO supply chain are palm oil, rapeseed oil,PFAD, tallow and tall oil. LCA studies reveal that feedstock grown on-purpose have larger life cycle GHGemissions than residual feedstock. However, due to the limited supply of residual feedstock there is a need to bemore dependent on domestic sustainable resources. The complexity of feedstock, origin, processing technologies,allocation approach, land use changes (LUC) and selection of environmental categories could result in variationsof the LCA results. To achieve national emissions target, policy instruments such as reduction obligations and taxincentives favor the market for HVO. However, to see more comprehensive results of the HVO development,research is needed to integrate the technological perspective from pilot scale to the commercialized market atlocal, regional and global level.

sted, utgiver, år, opplag, sider
Elsevier, 2019
Emneord
Hydrotreated vegetable oil (HVO), FeedstockLife cycle assessment (LCA), Greenhouse gas (GHG), EmissionsPolicy
HSV kategori
Forskningsprogram
Intelligent industri
Identifikatorer
urn:nbn:se:hig:diva-29913 (URN)10.1016/j.biteb.2019.100244 (DOI)2-s2.0-85076063201 (Scopus ID)
Tilgjengelig fra: 2019-06-14 Laget: 2019-06-14 Sist oppdatert: 2022-05-20bibliografisk kontrollert
Soam, S., Kapoor, M., Kumar, R., Gupta, R. P., Puri, S. K. & Ramakumar, S. S. (2018). Life cycle assessment and life cycle costing of conventional and modified dilute acid pretreatment for fuel ethanol production from rice straw in India. Journal of Cleaner Production, 197(1), 732-741
Åpne denne publikasjonen i ny fane eller vindu >>Life cycle assessment and life cycle costing of conventional and modified dilute acid pretreatment for fuel ethanol production from rice straw in India
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2018 (engelsk)Inngår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 197, nr 1, s. 732-741Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Dilute acid (DA) pretreatment results in the formation of inhibitory compounds and pseudo-lignin along with the burden of unnecessary materials like ash, extractive, lignin or their condensed products that reduces the conversion efficiency of cellulose to monomeric sugar. Indian Oil Corporation Limited (IOCL) has developed a modified pretreatment (MP) in order to reduce the enzyme dosage during ethanol production. This method uses extraction of biomass in water and varying alkali concentration of 0.2, 0.4 and 0.5%, prior to pretreatment as a strategy to reduce the enzyme dosage and improve the ethanol yield. The environmental and economic impact of these MP scenarios in comparison with conventional pretreatment (CP) is studied. The ethanol production increases from 218 to 267 L using MP. The introduction of extraction step prior to DA pretreatment fulfills the objective of reducing enzyme dosage by 23–39%. However, overall life cycle assessment (LCA) results revealed that performance of MP2, MP3 and MP4 is on a negative side in all the environmental impact categories as compared to CP due to the use of alkali, where a huge amount of emissions are released during the production stage. Overall, MP1 using water as a media for extraction is the most environmentally suitable pretreatment process for ethanol production. Life cycle costing (LCC) results showed that cost of 1 L ethanol production could be lowered down from 0.87 to 0.70 United States Dollar (USD) using MP1 scenario. From an environment and economic perspective, it is recommended to use only water as an extraction media for biomass, as this can reduce the enzyme dosage, emissions and cost.

sted, utgiver, år, opplag, sider
Elsevier, 2018
Emneord
Ethanol, Dilute acid pretreatment, Extraction, Alkali, Life cycle assessment, Life cycle costing
HSV kategori
Identifikatorer
urn:nbn:se:hig:diva-27337 (URN)10.1016/j.jclepro.2018.06.204 (DOI)
Tilgjengelig fra: 2018-06-25 Laget: 2018-06-25 Sist oppdatert: 2022-05-20bibliografisk kontrollert
Organisasjoner
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0002-2637-1980