scholarly journals Spatially Explicit Assessment of the Feasibility of Sustainable Aviation Fuels Production in Brazil: Results of Three Case Studies

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4972
Author(s):  
Arnaldo Walter ◽  
Joaquim Seabra ◽  
Jansle Rocha ◽  
Marjorie Guarenghi ◽  
Nathália Vieira ◽  
...  
Keyword(s):  
Fossil Fuels ◽  
Ghg Emissions ◽  
Production Costs ◽  
Civil Aviation ◽  
Industrial Plant ◽  
Spatially Explicit ◽  
Selling Price ◽  
Medium Term ◽  
Reference Case ◽  
Agricultural Yields

For international civil aviation to be able to significantly reduce its greenhouse gas (GHG) emissions, the use of Sustainable Aviation Fuels (SAF) needs to be made feasible. This paper presents the results of an assessment of the feasibility of production of SAF in Brazil, considering three certified routes, based on the dedicated production of eucalyptus, soy, sugarcane and corn. The results presented here refer to the production of biomass in selected locations, aiming to reduce GHG emissions and minimise production costs. Considering that the opportunity costs of feedstocks were not observed, the minimum selling price (MSP) of SAF in the reference case was estimated at 13.4 EUR·GJ−1 for the production based on soybean oil (HEFA-SPK route), 21.0 EUR·GJ−1 for the production based on ethanol from sugarcane and corn (ATJ-SPK) and 32.0 EUR·GJ−1 from eucalyptus (FT-SPK). These values refer to SAF’s nth industrial plant and biomass costs that are compatible with the current agricultural yields in Brazil but which are also the highest. The MSP results are relatively low compared to the estimates available in the literature, but they do not show the strict economic viability of SAFs in the short- to medium-term, mainly because of the low prices of fossil fuels.

scholarly journals Spatially Explicit Assessment of Suitable Conditions for the Sustainable Production of Aviation Fuels in Brazil

Land ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 705
Author(s):  
Arnaldo Walter ◽  
Joaquim Seabra ◽  
Jansle Rocha ◽  
Marjorie Guarenghi ◽  
Nathália Vieira ◽  
...  
Keyword(s):  
Necessary Conditions ◽  
Ghg Emissions ◽  
Economic Assessment ◽  
Sustainable Production ◽  
Civil Aviation ◽  
Spatially Explicit ◽  
Potential Production ◽  
Carbon Offsetting ◽  
Detailed Assessment ◽  
Land Economic

International civil aviation strives to significantly reduce its greenhouse gas (GHG) emissions, and the use of Sustainable Aviation Fuels (SAF) is an alternative for such purpose. However, for an alternative fuel to be considered SAF, some conditions must be met, and production must be certified for sustainability. This paper presents an assessment of the necessary conditions for the sustainable production of these biofuels in Brazil. It is based on a geospatial publicly available database (SAFmaps) that was built with the aim of providing information to stakeholders who would be interested in the production of SAF. The geographic scope corresponds to an area that is about half of the country. The case studies reported in this paper are related to four crop-based feedstocks (eucalyptus, soybean, sugarcane, and corn), which could be used for SAF production, according to three certified routes (FT, HEFA, and ATJ) (Fischer–Tropsch, Hydroprocessed Esters and Fatty Acids and Alcohol to Jet); in total, six potential production sites were assessed. For each crop, the detailed assessment is based on estimates of suitability for biomass production, yields, and costs. The assumptions made allowed us to explicitly analyse the risk of deforestation (production could only occur with displacement of pastures) and the necessary preservation of sensitive biomes and of legally protected areas, in addition to observing the restrictive conditions imposed by CORSIA (Carbon Offsetting and Reduction Scheme for International Aviation). To reduce GHG emissions, transporting biomass over long distances was assumed to be only by rail or pipeline. In addition, we address alternatives to minimise the risks associated with induced land-use change (iLUC) and to reduce impacts on the landscape. The results show that the production of SAF through the ATJ route, using ethanol produced from sugarcane and corn, requires less land. Economic assessment was outside the scope of this paper.

scholarly journals GHG Balance of Agricultural Intensification & Bioenergy Production in the Orinoquia Region, Colombia

Land ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 289
Author(s):  
Nidia Elizabeth Ramírez-Contreras ◽  
David Munar-Florez ◽  
Floor van der Hilst ◽  
Juan Carlos Espinosa ◽  
Álvaro Ocampo-Duran ◽  
...  
Keyword(s):  
Land Use ◽  
Biomass Production ◽  
Fossil Fuels ◽  
Agricultural Sector ◽  
Agricultural Land ◽  
Agricultural Productivity ◽  
Ghg Emissions ◽  
Energy Crop ◽  
Agricultural Yields ◽  
High Scenario

Energy crop expansion can increase land demand and generate displacement of food crops, which impacts greenhouse gas (GHG) emissions mainly through land-use change (LUC). Increased agricultural productivity could compensate for this. Our study aims to evaluate the regional combined GHG emissions of increasing agricultural yields for food crop and beef production and using the generated surplus land for biomass production to replace fossil fuels in the Orinoquia region of Colombia until 2030. The results show that surplus land for biomass production is obtained only when strong measures are applied to increase agricultural productivity. In the medium and high scenario, a land surplus of 0.6 and 2.4 Mha, respectively, could be generated. Such intensification results in up to 83% emission reduction in Orinoquia’s agricultural sector, largely coming from increasing productivity of cattle production and improving degraded pastures. Biofuel potential from the surplus land is projected at 36 to 368 PJ per year, with a low risk of causing indirect LUC, and results in GHG emission reductions of more than 100% compared to its fossil fuel equivalent. An integrated perspective of the agricultural land use enables sustainable production of both food and bioenergy.

scholarly journals A Comparison of Alternative Fuels for Shipping in Terms of Lifecycle Energy and Cost

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8502
Author(s):  
Li Chin Law ◽  
Beatrice Foscoli ◽  
Epaminondas Mastorakos ◽  
Stephen Evans
Keyword(s):  
Natural Gas ◽  
Carbon Capture ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Ghg Emissions ◽  
Fuel Oil ◽  
Heavy Fuel Oil ◽  
Long Distance ◽  
Reference Case ◽  
Marine Fuel

Decarbonization of the shipping sector is inevitable and can be made by transitioning into low- or zero-carbon marine fuels. This paper reviews 22 potential pathways, including conventional Heavy Fuel Oil (HFO) marine fuel as a reference case, “blue” alternative fuel produced from natural gas, and “green” fuels produced from biomass and solar energy. Carbon capture technology (CCS) is installed for fossil fuels (HFO and liquefied natural gas (LNG)). The pathways are compared in terms of quantifiable parameters including (i) fuel mass, (ii) fuel volume, (iii) life cycle (Well-To-Wake—WTW) energy intensity, (iv) WTW cost, (v) WTW greenhouse gas (GHG) emission, and (vi) non-GHG emissions, estimated from the literature and ASPEN HYSYS modelling. From an energy perspective, renewable electricity with battery technology is the most efficient route, albeit still impractical for long-distance shipping due to the low energy density of today’s batteries. The next best is fossil fuels with CCS (assuming 90% removal efficiency), which also happens to be the lowest cost solution, although the long-term storage and utilization of CO2 are still unresolved. Biofuels offer a good compromise in terms of cost, availability, and technology readiness level (TRL); however, the non-GHG emissions are not eliminated. Hydrogen and ammonia are among the worst in terms of overall energy and cost needed and may also need NOx clean-up measures. Methanol from LNG needs CCS for decarbonization, while methanol from biomass does not, and also seems to be a good candidate in terms of energy, financial cost, and TRL. The present analysis consistently compares the various options and is useful for stakeholders involved in shipping decarbonization.

Estimating Carbon Emission of Tourism Transportation and Accommodation in China

2014 ◽  
Vol 962-965 ◽  
pp. 1327-1331
Author(s):  
Zhong Hong Yang ◽  
Yang Yang ◽  
Xiao Hui Chen
Keyword(s):  
Emission Reduction ◽  
Carbon Emission ◽  
Fossil Fuels ◽  
Ghg Emissions ◽  
Civil Aviation ◽  
Low Carbon ◽  
Great Demand

The tourism’s growing consumption of energy, especially in transportation and accommodation, and its great demand on fossil fuels has important implications for GHG emissions. From the perspective of low carbon and emission reduction, the paper discussed the carbon emission of China’s tourism. Based on the previous studies, the paper calculated carbon emission of 31 Chinese provinces from tourism transportation and accommodation. The results show that: 1) Tourism transportation contributes most to carbon emission, accounting for 89.4% of the total, while tourism accommodation accounts for 10.6%. 2) In terms of transportation, civil aviation contributes most, accounting for 44.71% of the carbon emission of tourism transportation. 3) In terms of accommodation, three-star hotels contribute most, accounting for 45.3% of the carbon emission of tourism accommodation. 4) Cities of Guangzhou, Beijing and Shanghai make the largest contribution to the carbon emission among 31 provinces. Based on the above, it is reasonable that Tourism Sectors should make targeted policies to promote the development of low-carbon tourism according to the structure of tourism transportation and accommodation.

scholarly journals Harga Jual BioCNG dari Palm Oil Mill Effluent sebagai Sumber Energi Alternatif

2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Irhan Febijanto
Keyword(s):  
Natural Gas ◽  
Palm Oil ◽  
Fossil Fuels ◽  
Energy Content ◽  
Ghg Emissions ◽  
Selling Price ◽  
Methane Gas ◽  
Ghg Reduction ◽  
National Energy Security ◽  
Palm Oil Mill

<p class="judulabstraking">Indonesia as the largest producer of palm oil, produces huge palm oil wastewater. The wastewater produces biogas which contributes to global warming, and the utilization of the biogas reduces GHG emissions of methane gas. By increasing the concentration of methane gas in the biogas, and increasing the gas pressure of biomethane, so-called bioCNG (Compressed Natural Gas), the gas utilization easier in the transportation and the energy content of the gas increases. In this paper, an assessment of the economics of bioCNG production facility in the Palm Oil Mill (POM) with a capacity of 60 tons/hour was conducted. The investment cost is estimated based on the biogas flow rate produced from an aerobic digester in the POM. By using a covered lagoon technology for anaerobic digester, and technology of membrane for gas purification, and based on the natural gas trading regulations, the selling price of bioCNG is determined by 10.27 USD/MMBTU with an IRR of 12%. This price can compete with the prices of other fossil fuels. However, the support from government regulations are still needed to utilize bioCNG as a new renewable fuel that can contribute to national energy security, GHG reduction, and achievement of the mix energy target.</p>

scholarly journals Parametric Study for Thermal and Catalytic Methane Pyrolysis for Hydrogen Production: Techno-Economic and Scenario Analysis

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6102
Author(s):  
Seunghyun Cheon ◽  
Manhee Byun ◽  
Dongjun Lim ◽  
Hyunjun Lee ◽  
Hankwon Lim
Keyword(s):  
Scenario Analysis ◽  
Cost Estimation ◽  
Fossil Fuels ◽  
H2 Production ◽  
Production Costs ◽  
Selling Price ◽  
Production Scale ◽  
Technical Performance ◽  
Wgs Reaction ◽  
Methane Pyrolysis

As many countries have tried to construct a hydrogen (H2) society to escape the conventional energy paradigm by using fossil fuels, methane pyrolysis (MP) has received a lot of attention owing to its ability to produce H2 with no CO2 emission. In this study, a techno-economic analysis including a process simulation, itemized cost estimation, and sensitivity and scenario analysis was conducted for the system of thermal-based and catalyst-based MP (TMP-S1 and CMP-S2), and the system with the additional H2 production processes of carbon (C) gasification and water–gas shift (WGS) reaction (TMPG-S3 and CMPG-S4). Based on the technical performance expressed by H2 and C production rate, the ratio of H2 combusted to supply the heat required and the ratio of reactants for the gasifier (C, Air, and water (H2O)), unit H2 production costs of USD 2.14, 3.66, 3.53, and 3.82 kgH2−1 from TMP-S1, CMP-S2, TMPG-S3, and CMPG-S4, respectively, were obtained at 40% H2 combusted and a reactants ratio for C-Air-H2O of 1:1:2. Moreover, trends of unit H2 production cost were obtained and key economic parameters of the MP reactor, reactant, and C selling price were represented by sensitivity analysis. In particular, economic competitiveness compared with commercialized H2 production methods was reported in the scenario analysis for the H2 production scale and C selling price.

scholarly journals Recent Advancements in Technical Design and Thermal Performance Enhancement of Solar Greenhouse Dryers

2021 ◽  
Vol 13 (13) ◽  
pp. 7025
Author(s):  
Shiva Gorjian ◽  
Behnam Hosseingholilou ◽  
Laxmikant D. Jathar ◽  
Haniyeh Samadi ◽  
Samiran Samanta ◽  
...  
Keyword(s):  
Thermal Performance ◽  
Fossil Fuels ◽  
Performance Enhancement ◽  
Renewable Energy Sources ◽  
Ghg Emissions ◽  
Heat Pumps ◽  
Energy Sources ◽  
Key Factor ◽  
Hybrid Configuration ◽  
Vegetables And Fruits

The food industry is responsible for supplying the food demand of the ever-increasing global population. The food chain is one of the major contributors to greenhouse gas (GHG) emissions, and global food waste accounts for one-third of produced food. A solution to this problem is preserving crops, vegetables, and fruits with the help of an ancient method of sun drying. For drying agricultural and marine products, several types of dryers are also being developed. However, they require a large amount of energy supplied conventionally from pollutant energy sources. The environmental concerns and depletion risks of fossil fuels persuade researchers and developers to seek alternative solutions. To perform drying applications, sustainable solar power may be effective because it is highly accessible in most regions of the world. Greenhouse dryers (GHDs) are simple facilities that can provide large capacities for drying agricultural products. This study reviews the integration of GHDs with different solar technologies, including photovoltaic (PV), photovoltaic-thermal (PVT), and solar thermal collectors. Additionally, the integration of solar-assisted greenhouse dryers (SGHDs) with heat pumps and thermal energy storage (TES) units, as well as their hybrid configuration considering integration with other renewable energy sources, is investigated to improve their thermal performance. In this regard, this review presents and discusses the most recent advances in this field. Additionally, the economic analysis of SGHDs is presented as a key factor to make these sustainable facilities commercially available.

scholarly journals Tourism, Transport and Climate Change: The Carbon Footprint of International Air Traffic on Islands

2021 ◽  
Vol 13 (4) ◽  
pp. 1795
Author(s):  
Pedro Dorta Antequera ◽  
Jaime Díaz Pacheco ◽  
Abel López Díez ◽  
Celia Bethencourt Herrera
Keyword(s):  
Climate Change ◽  
Carbon Footprint ◽  
Canary Islands ◽  
Fossil Fuels ◽  
Average Distance ◽  
Ghg Emissions ◽  
Relative Weight ◽  
Air Transport ◽  
Small Islands ◽  
The World

Many small islands base their economy on tourism. This activity, based to a large extent on the movement of millions of people by air transport, depends on the use of fossil fuels and, therefore, generates a large amount of greenhouse gas (GHG) emissions. In this work, these emissions are evaluated by means of various carbon calculators, taking the Canary Islands as an example, which is one of the most highly developed tourist archipelagos in the world. The result is that more than 6.4 million tonnes (Mt) of CO2 are produced per year exclusively due to the massive transport of tourists over an average distance of more than 3000 km. The relative weight of these emissions is of such magnitude that they are equivalent to more than 50% of the total amount produced by the socioeconomic activity of the archipelago. Although, individually, it is travelers from Russia and Nordic countries who generate the highest carbon footprint due to their greater traveling distance, the British and German tourists account for the greatest weight in the total, with two-thirds of emissions.

scholarly journals Examining the Role of Disruptive Innovation in Renewable Energy Businesses from a Cross National Perspective

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4447
Author(s):  
Hokey Min ◽  
Yohannes Haile
Keyword(s):  
Renewable Energy ◽  
Natural Resources ◽  
Fossil Fuels ◽  
Weather Conditions ◽  
Disruptive Innovation ◽  
Production Costs ◽  
Developed Economies ◽  
Sustainable Value ◽  
National Perspective ◽  
The Impact

With a growing demand for safe, clean, and affordable energy, countries across the world are now seeking to create and rapidly develop renewable energy (RE) businesses. The success of these businesses often hinges on their ability to translate RE into sustainable value for energy consumers and the multiple stakeholders in the energy industry. Such value includes low production costs due to an abundance of natural resources (e.g., wind, water, sunlight), and public health benefits from reduced environmental pollution. Despite the potential for value creation, many RE businesses have struggled to create affordable energy as abundant as that which is produced by traditional fossil fuels. The rationale being that traditional RE sources emanating from natural resources tend to rely on unpredictable weather conditions. Therefore, to help RE businesses deliver sustainable value, we should leverage disruptive innovation that is less dependent on natural resources. This paper is one of the first attempts to assess the impact of disruptive innovation on RE business performances based on the survey data obtained from multiple countries representing both emerging and developed economies.

Incorporating Life Cycle Assessment (LCA) in Freight Transportation Infrastructure Project Evaluation

2017 ◽  
Author(s):  
Soumith Kumar Oduru ◽  
Pasi Lautala
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Fossil Fuels ◽  
Ghg Emissions ◽  
Freight Transportation ◽  
Evaluation Process ◽  
Planning Stage ◽  
Simplified Lca ◽  
Modal Route

Transportation industry at large is a major consumer of fossil fuels and contributes heavily to the global greenhouse gas emissions. A significant portion of these emissions come from freight transportation and decisions on mode/route may affect the overall scale of emissions from a specific movement. It is common to consider several alternatives for a new freight activity and compare the alternatives from economic perspective. However, there is a growing emphasis for adding emissions to this evaluation process. One of the approaches to do this is through Life Cycle Assessment (LCA); a method for estimating the emissions, energy consumption and environmental impacts of the project throughout its life cycle. Since modal/route selections are often investigated early in the planning stage of the project, availability of data and resources for analysis may become a challenge for completing a detailed LCA on alternatives. This research builds on such detailed LCA comparison performed on a previous case study by Kalluri et al. (2016), but it also investigates whether a simplified LCA process that only includes emissions from operations phase could be used as a less resource intensive option for the analysis while still providing relevant outcomes. The detailed LCA is performed using SimaPro software and simplified LCA is performed using GREET 2016 model. The results are obtained in terms of Kg CO2 equivalents of GHG emissions. This paper introduces both detailed and simplified methodologies and applies them to a case study of a nickel and copper mine in the Upper Peninsula of Michigan. The analysis’ are done for three modal alternatives (two truck routes and one rail route) and for multiple mine lives.

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