Article
Chemistry, Physical
Deizi Peron, Alan J. Barrios, Alan Taschin, Iulian Dugulan, Carlo Marini, Giulio Gorni, Simona Moldovan, Siddardha Koneti, Robert Wojcieszak, Joris W. Thybaut, Mirella Virginie, Andrei Y. Khodakov
Summary: The study found that antimony and tin have strong promoting effects on silica supported iron Fischer-Tropsch catalysts, significantly increasing the reaction rate and improving catalyst stability. The addition of these elements through impregnation can increase the intrinsic activity of iron surface sites by 7-10 times without affecting iron dispersion.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Energy & Fuels
Fangwei Cheng, Hongxi Luo, Jesse D. Jenkins, Eric D. Larson
Summary: This study provides insights into the environmental and economic cost and value of hydrogen, synthetic natural gas, and Fischer-Tropsch liquid fuels made from biomass, natural gas, and electricity. The study finds that hydrogen production pathways are less costly to decarbonize and result in the largest reductions in greenhouse gas emissions per unit of delivered fuel. Fuel production pathways starting from biomass with carbon capture and storage have the highest carbon mitigation potentials.
Article
Chemistry, Multidisciplinary
Songtao Liu, Riyang Chen, Yi Wang, Yulin Chen, Xiaoyu Guo, Haozhong Huang
Summary: Coal-to-liquid (CTL) fuel is a promising alternative fuel in China due to its excellent properties, but little research has been done on its spray and combustion processes. This study investigated the characteristics of diesel fuel blends with different CTL blending ratios. The results showed that higher injection pressure led to longer spray tip penetration and enlarged spray cone angle under non-evaporation conditions. Under evaporation conditions, the STP and SCA of the fuel decreased with increasing CTL mixing ratio due to higher volatility, while ignition delay period shortened and flame lift-off length decreased.
Article
Energy & Fuels
Panpan Cai, Chunhua Zhang, Zheng Jing, Yiwen Peng, Jiale Jing, Hongjie Sun
Summary: The study found that blending F-T diesel with petrochemical diesel resulted in improved combustion and emission characteristics under different injection timings and engine loads. The trade-off between NOx and soot emissions was significantly alleviated with F-T blending fuels.
Article
Chemistry, Multidisciplinary
Iris C. ten Have, Robin Y. van den Brink, Stephane C. Marie-Rose, Florian Meirer, Bert M. Weckhuysen
Summary: Gasification is a process that converts solid waste into gaseous feedstock. This study investigates the possibility of using waste gasification solid residue as a catalyst for producing light olefins. Experimental results show that the catalyst can convert biomass-derived syngas into methane and olefins.
Review
Green & Sustainable Science & Technology
Diego C. de Oliveira, Electo E. S. Lora, Osvaldo J. Venturini, Diego M. Y. Maya, Manuel Garcia-Perez
Summary: Established biofuel examples show the potential for sustainable ways to reduce reliance on fossil fuels and mitigate negative effects. The biomass-to-liquid (BtL) route, particularly the Fischer-Tropsch (FT) process, offers a pathway for converting biomass into liquid biofuels. However, technical challenges and high costs still hinder commercial applications. This review synthesizes information on impurities generation and removal techniques in the gasification integrated into the Fischer-Tropsch process (G-FT), proposing a flexible gas cleaning sequence.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Review
Chemistry, Physical
Kristina Mazurova, Albina Miyassarova, Oleg Eliseev, Valentine Stytsenko, Aleksandr Glotov, Anna Stavitskaya
Summary: The Fischer-Tropsch process is a promising eco-friendly route for obtaining synthetic motor fuels, particularly diesel fuel with high selectivity. Catalysts based on Al2O3 and mesoporous silicates have shown great potential in improving the selectivity of diesel fuel synthesis via Fischer-Tropsch synthesis. The main factors that influence diesel fuel selectivity, such as temperature, pressure, CO:H-2 ratio, active metal particle size, and carrier pore size, are also discussed in this review.
Article
Thermodynamics
Stefano Piazzi, Francesco Patuzzi, Marco Baratieri
Summary: The aim of this study is to assess the energy and exergy efficiencies of different Integrated biomass Gasification coupled to Fischer-Tropsch synthesis (IGFT) configurations. The results indicate that configurations using hot gas cleaning system or steam as gasification agent exhibit higher efficiency.
Article
Thermodynamics
Ho Won Ra, Tae-Young Mun, Sung Jun Hong, Dong Hyun Chun, Ho Tae Lee, Sung Min Yoon, Ji Hong Moon, Sung Jin Park, Seok Hyeong Lee, Jung Hoon Yang, Jae-Kon Kim, Heon Jung, Myung Won Seo
Summary: The plant incorporates various processes to produce liquid fuels for vehicles through entrained flow gasification, Rectisol, and Fischer-Tropsch processes. Utilizing an entrained flow gasifier and an iron-based catalyst, synthesis gas can be stably produced, allowing for the production of liquid fuels that meet quality standards.
Article
Chemistry, Multidisciplinary
Felipe Andrade Torres, Omid Doustdar, Jose Martin Herreros, Runzhao Li, Robert Poku, Athanasios Tsolakis, Jorge Martins, Silvio A. B. Vieira de Melo
Summary: The study found that alternative fuel blends had comparable energy and exergy efficiencies to diesel, with reduced unburnt emissions and increased CO emissions. Combustion of E15B35FTD50 significantly reduced total HC emissions compared to diesel and E15B35D50. These results provide insights into the advantages and limitations of conventional diesel and hybrid electric vehicles to meet future emissions regulations.
APPLIED SCIENCES-BASEL
(2021)
Review
Energy & Fuels
Shir Reen Chia, Saifuddin Nomanbhay, Mei Yin Ong, Abd Halim Bin Shamsuddin, Kit Wayne Chew, Pau Loke Show
Summary: Researchers worldwide are searching for sustainable and clean energy sources to reduce environmental impact and ensure continuous energy supply. This review evaluates the potential commercialization of renewable diesel production in Malaysia through comprehensive literature studies. While renewable diesel shows promise as a substitute for fossil fuels, further research is needed to address cost and technological challenges.
Article
Chemistry, Physical
Jan Jencik, Vladimir Honig, Michal Obergruber, Jiri Hajek, Ales Vrablik, Radek Cerny, Dominik Schlehofer, Tomas Herink
Summary: This paper evaluates the fuel properties of Fischer-Tropsch diesel blends with conventional diesel, finding that the blended fuel performs better than conventional fuel in some parameters and meets current standards, ensuring repeatability.
Article
Thermodynamics
Henrique Real Guimaraes, Jessica Marcon Bressanin, Ingrid Lopes Motta, Mateus Ferreira Chagas, Bruno Colling Klein, Antonio Bonomi, Rubens Maciel Filho, Marcos Djun Barbosa Watanabe
Summary: The present study assessed three strategies to improve the economic feasibility of sustainable aviation fuel (SAF) production through gasification and Fischer-Tropsch synthesis (GFT) of lignocellulosic biomass feedstocks in Biomass-to-Liquids (BtL) plants. These strategies include integration with sugarcane ethanol production, use of economic incentives by the carbon credits market, and decentralization of the production chain with fast pyrolysis (FP) units. Process simulation coupled with techno-economic assessment (TEA) and life cycle assessment (LCA) were used to analyze these strategies. The study found that carbon credits commercialization alone is not sufficient for standalone GFT scenario, but integrating SAF production with 1G mill can significantly decrease production costs and achieve CO2 emissions reductions.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Zahra Teimouri, Nicolas Abatzoglou, Ajay K. Dalai
Summary: In this study, machine learning was used to optimize the process conditions for synthesis of mesoporous activated carbon (AC) from biomass, which served as a catalyst support in Fischer-Tropsch synthesis (FTS). The random forest regression (RFR) method achieved the best prediction accuracy for the textural features of AC. The AC prepared under the optimized conditions showed promising potential as a biomass-based catalyst support for FTS, with superior activity and selectivity compared to other catalysts.
Article
Engineering, Environmental
Tuhin K. Poddar, George G. Zaimes, Saurajyoti Kar, Devin M. Walker, Troy R. Hawkins
Summary: Renewable liquid fuels production from landfill waste offers a promising alternative to carbon-intensive waste management. The study investigates the greenhouse gas emissions of producing Fischer-Tropsch diesel from landfill gas using the TriFTS catalytic conversion process and compares it to fossil-based petroleum diesel. The results show that TriFTS diesel has significantly lower emissions than fossil fuel diesel and can serve as a viable low-carbon fuel option.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Energy & Fuels
Pedro R. R. Rochedo, Panagiotis Fragkos, Rafael Garaffa, Lilia Caiado Couto, Luiz Bernardo Baptista, Bruno S. L. Cunha, Roberto Schaeffer, Alexandre Szklo
Summary: The emissions pathways post-COVID-19 will be influenced by governments' economic responses, with recovery packages pledging to incorporate climate action but varying across countries. Current planned recovery from COVID-19 is insufficient to enhance societal responses to climate urgency.
Article
Green & Sustainable Science & Technology
Suda Neto, Alexandre Szklo, Pedro R. R. Rochedo
Summary: The study compared bagasse-fired cogeneration plants with CaL systems for CO2 capture to those without CO2 capture and with Cansolv solvent absorption, finding that while the Bio-CaL alternative is costlier, it offers advantages in operational flexibility, energy efficiency, and electricity surplus.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Economics
Mauricio Aguilar Nepomuceno de Oliveira, Alexandre Szklo, David Alves Castelo Branco
Summary: The International Maritime Organization has set a target to reduce shipping greenhouse gas emissions by at least 50% in 2050 compared to 2008. Studies show that mitigation measures with negative costs are more likely to be implemented, but alternative maritime fuels have a lower implementation rate.
Article
Green & Sustainable Science & Technology
Joao Bruno Valentim Bastos, Jeiveison Goberio Soares Santos Maia, Suzana Borschiver, Alexandre Szklo, Argimiro Resende Secchi
Summary: This study assesses the effects of scale and seasonality on the design of a sugarcane-based ethanol biorefinery and finds that the selling price of bio-MEG must be higher than fossil-based MEG to ensure competitiveness.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Tainan Nogueira, Pedro R. R. Rochedo, Alexandre Szklo
Summary: CO2 transport has received less scientific attention compared to its capture, but it presents various challenges, especially when dealing with irregular CO2 supply and long-distance transportation. This study evaluates the costs of establishing a CO2 transport infrastructure on the Brazilian coast and finds that ships are more cost-effective for longer distances and smaller volumes, while offshore pipelines are the most suitable alternative for larger volumes and shorter distances.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Environmental Sciences
Fabio T. F. da Silva, Alexandre Szklo, Amanda Vinhoza, Ana Celia Nogueira, Andre F. P. Lucena, Antonio Marcos Mendonca, Camilla Marcolino, Felipe Nunes, Francielle M. Carvalho, Isabela Tagomori, Laura Soares, Marcio Rojas da Cruz, Pedro Rochedo, Raoni Rajao, Regis Rathmann, Roberto Schaeffer, Sonia Regina Mudrovitsch de Bittencourt
Summary: Technological development is crucial for achieving the goals of the Paris Agreement. Technology Needs Assessments (TNAs) are conducted to identify and prioritize climate change mitigation and adaptation technologies in developing countries. However, there is a lack of literature discussing country-specific processes for TNAs. This paper presents empirical evidence from a tailored TNA project in Brazil, highlighting the importance of country-driven processes in shaping international programs according to specific national needs and capabilities.
MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE
(2022)
Article
Environmental Sciences
Ana Carolina Oliveira Fiorini, Gerd Angelkorte, Pedro Luiz Maia, Clarissa Bergman-Fonte, Clarissa Vicente, Taisa Morais, Lucas Carvalho, Marianne Zanon-Zotin, Alexandre Szklo, Roberto Schaeffer, Joana Portugal-Pereira
Summary: Bio-sustainable aviation fuels (bio-SAFs) are considered as an important strategy for decarbonizing the aviation sector in the mid-term. This study evaluates the Land-Use Change (LUC) implications of producing bio-SAFs in Brazil under different forest conservation governance scenarios. Four bio-SAF routes are evaluated using Alcohol-to-Jet (ATJ) and Hydroprocessed Esters and Fatty Acids (HEFA) syntheses. The results show that the production of bio-SAFs can lead to different greenhouse gas (GHG) emissions, depending on factors such as deforestation rates and feedstock types. Effective land conservation policies are crucial for reducing LUC GHG emissions and promoting the large-scale production of bio-SAFs.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Review
Energy & Fuels
Camilo Andres Guerrero-Martin, Daniel Montes-Pinzon, Mariana Meneses Motta da Silva, Erik Montes-Paez, Laura Estefania Guerrero-Martin, Raul Salinas-Silva, Stefanny Camacho-Galindo, Elizabete Fernandes Lucas, Alexandre Szklo
Summary: Asphaltene precipitation/deposition is a formation damage problem that reduces oil recovery. It can also cause complications in pipeline and surface installations, leading to decreased oil production. Minimization of asphaltene precipitation can be achieved by reducing flowrate or using chemical inhibitors. Experimental and numerical methods are proposed for analyzing asphaltene stability and precipitation trends. Once risks of precipitation are established, strategies can be formulated for prevention and diagnosis. Testing with dead oil helps understand asphaltene behavior. This review focuses on the problems related to asphaltene precipitation, thermodynamic models, and asphaltene inhibition, control, and removal using nanoparticles.
Article
Green & Sustainable Science & Technology
Amanda Vinhoza, Andre F. P. Lucena, Pedro R. R. Rochedo, Roberto Schaeffer
Summary: In this paper, the cost potential of Brazilian offshore wind energy is assessed using a methodological approach that combines spatial suitability analysis and a cost estimation model. The available area for development is mapped and classified based on the Levelized Cost of Energy (LCOE), generating a cost potential map and a cost-supply curve. The results demonstrate that Brazil has a promising market for offshore wind energy, with significant installable capacity and internationally competitive costs.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Thermodynamics
Clarissa Bergman-Fonte, Gabriela Nascimento da Silva, Mariana Imperio, Rebecca Draeger, Leticia Coutinho, Bruno S. L. Cunha, Pedro R. R. Rochedo, Alexandre Szklo, Roberto Schaeffer
Summary: Deep decarbonization scenarios require adaptation in oil refineries due to decreasing fossil oil usage. This study evaluates the refining sector's evolution in Brazil until 2050 using the BLUES integrated assessment model. Strategies related to feedstock production for the petrochemical industry, aviation and maritime fuels, and biomass co-processing are analyzed, along with exploring emissions mitigation options. Findings show that the sector operates at a reduced capacity in decarbonization scenarios, reducing risks of carbon lock-in and asset stranding.
Article
Biodiversity Conservation
Aline C. Soterroni, Mariana Imperio, Marluce C. Scarabello, Nathalie Seddon, Michael Obersteiner, Pedro R. R. Rochedo, Roberto Schaeffer, Pedro R. Andrade, Fernando M. Ramos, Tasso R. Azevedo, Jean P. H. B. Ometto, Petr Havlik, Ane A. C. Alencar
Summary: The study investigates whether existing and expected national policies will allow Brazil to achieve its net-zero greenhouse gas emissions goal by 2050. The results emphasize the critical role of ecosystem protection as the most cost-effective climate mitigation measure for Brazil, highlighting the potential risks of relying on expensive and immature engineered solutions.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Marianne Zanon-Zotin, Clarissa Bergman-Fonte, Taisa Nogueira Morais, Pedro Luiz Barbosa Maia, Lucas Carvalho, Gerd Angelkorte, Ana Carolina Oliveira Fiorini, Pedro Rua Rodriguez Rochedo, Joana Portugal-Pereira, Alexandre Szklo, Roberto Schaeffer
Summary: This study evaluates the life cycle of bioethylene production in Brazil, the EU, and the US and finds that bioethylene production through catalytic dehydration of sugar-cane bioethanol in Brazil has the lowest greenhouse gas emissions. However, when excluding biogenic carbon storage, none of the pathways outperform conventional fossil-based steam cracking.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Ana Carolina Oliveira Fiorini, Pedro Rua Rodriguez Rochedo, Gerd Angelkorte, Fabio A. Diuana, Mariana Imperio, Lucas Silva Carvalho, Taisa Nogueira Morais, Eveline Vasquez-Arroyo, Roberto Schaeffer
Summary: This study investigates the impact of different climate mitigation scenarios on terrestrial biodiversity in Brazil using integrated assessment models. The results indicate that strengthening climate change mitigation actions can reduce biodiversity loss, and Brazil has the opportunity to align its biodiversity and climate goals through nature-based solutions.
JOURNAL OF INTEGRATIVE ENVIRONMENTAL SCIENCES
(2023)
Article
Thermodynamics
Marcus Vinicius da Silva Neves, Alexandre Szklo, Roberto Schaeffer
Summary: The concept of Energy Return On Investment (EROI) has been proven useful, but needs to be extended to include CO2 capture and environmental effects in the energy transition. This study introduces the concept of Exergy Return on Environment and Energy Investment (ExROEEI) to assess fossil fuel sources complying with CO2 emission limits. Applying this concept to a coal-based power plant with CO2 capture, the ExROEEI ratio is 2.06:1, raising questions about its energy feasibility.
Article
Agricultural Engineering
G. Grasa, I. Martinez, R. Murillo
Summary: Gasification kinetics of six chars from residual origin were studied under relatively low temperature, low CO2, and high H2O partial pressures. The Random Pore Model (RPM) showed the best fit to experimental results, but the selection of the reaction model depended on the ash composition, specifically the presence of alkali and alkaline earth metals. Chars with ash content higher than 30% wt. were modeled with the RPM model, while chars with the highest K/Si ratio required modified versions of the RPM to accurately predict reaction rates. Textural properties played a key role in determining reaction parameters, such as the pre-exponential factor and activation energy, for chars with similar ash content and composition.
BIOMASS & BIOENERGY
(2024)
Review
Agricultural Engineering
V. Godvin Sharmila, Surya Prakash Shanmugavel, J. Rajesh Banu
Summary: Proper treatment and disposal of biomass waste is crucial to prevent environmental deposition and its negative impacts. Biofuel has emerged as a potential alternative to fossil fuels, reducing carbon emissions and meeting global energy demands. This review examines different biomass waste conversion techniques and explores the production of biofuels with zero carbon emissions. Research on anaerobic treatment, metabolic engineering, and artificial intelligence has been conducted to enhance biofuel production efficiency.
BIOMASS & BIOENERGY
(2024)
Review
Agricultural Engineering
Selvakumar Periyasamy, Adane Asefa Adego, P. Senthil Kumar, G. G. Desta, T. Zelalem, V. Karthik, J. Beula Isabel, Mani Jayakumar, Venkatesa Prabhu Sundramurthy, Gayathri Rangasamy
Summary: Valorizing agricultural waste into valuable products is crucial for environmental protection and bioeconomy advancement. Preprocessing of agricultural waste is a critical step to convert free carbohydrate molecules for final conversion, and factors such as biomass nature, feed loading, pH, temperature, and time influence the process. This review provides comprehensive information on agricultural waste availability, preprocessing techniques, and factors influencing performance.
BIOMASS & BIOENERGY
(2024)
Article
Agricultural Engineering
Aqueel Ahmad, Ashok Kumar Yadav, Achhaibar Singh, Dinesh Kumar Singh
Summary: The study focuses on predicting and optimizing the yield of biogas production in an anaerobic digester using co-digestion. Experimental data was used to develop a machine learning-based prognostic model, and the Response Surface Methodology (RSM) was employed to optimize the parameters. The results demonstrate that RSM coupled with machine learning is an effective technique for modeling, predicting, and optimizing biogas production yield.
BIOMASS & BIOENERGY
(2024)
Article
Agricultural Engineering
Yijing Zhong, Wenxiang Zhai, Xinli Wei
Summary: This paper studies the thermal stability and decomposition of cork materials with and without silica aerogel filler. The results show that the decomposition is inhibited and the pyrolysis is significantly reduced with the addition of silica aerogel. This finding suggests that silica aerogel-infused cork may be a promising raw material for biofuel production with reduced environmental pollution.
BIOMASS & BIOENERGY
(2024)