Article
Engineering, Environmental
Shiliang Yang, Shuai Wang, Hua Wang
Summary: The study on biomass pyrolysis in a spouted bed reactor reveals that the heat transfer coefficient of particles varies with bed height and shows significant distribution differences in different regions. The temperature and heat transfer coefficient of biomass increase with the rise of pyrolysis temperature, while the effect of gas velocity on the heat transfer coefficient is insignificant.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Shiliang Yang, Ruihan Dong, Yanxiang Du, Shuai Wang, Hua Wang
Summary: The study investigates the physical and thermochemical characteristics of biomass pyrolysis in a lab-scale spouted bed reactor using a reactive multiphase particle-in-cell approach. Results show that the distribution of biomass particles affects the spatial distributions of gas thermochemical properties. Intensive turbulent flow of gas phase exists in the spout region, which is enhanced with increasing gas inlet velocity and pyrolysis temperature.
Article
Green & Sustainable Science & Technology
Rocio Ramos-Hernandez, Cuauhtemoc Sanchez-Ramirez, Dulce Rocio Mota-Lopez, Fabiola Sandoval-Salas, Jorge Luis Garcia-Alcaraz
Summary: Biomass is considered a popular alternative for renewable energy due to its consistency and stability, with studies often conducted at a pilot scale. However, there is a lack of emphasis on studying the logistical operations and key variables enabling the feasibility of biomass as an energy source at an industrial scale.
Article
Chemistry, Multidisciplinary
Zhengwen Cao, Yun Xu, Pengbo Lyu, Michael Dierks, Angel Morales-Garcia, Wolfgang Schrader, Petr Nachtigall, Ferdi Schuth
Summary: This study presents a catalytic system that can convert lignin into high-quality hydrocarbons by controlling hydrogen partial pressure, providing flexibility in hydrogen storage/consumption to meet different regional and temporal demands. The product distribution between aromatics and aliphatics can be tuned by controlling hydrogen availability on the catalyst surface, leading to almost complete oxygen removal from lignin biomass.
Article
Green & Sustainable Science & Technology
Ruihan Dong, Shiliang Yang, Jianhang Hu, Fangjun Chen, Guirong Bao, Hua Wang
Summary: This study numerically investigates the gas-solid reactive flow in the biomass gasification of the fuel reactor in a chemical looping combustion system. The results show that the distribution of solid phase is non-uniform, the residence time of biomass is skewed, and the gas products exhibit a wide range of variations.
Review
Chemistry, Physical
Samira Hossain, Chayan Kumer Saha, Mohammad Ismail, Toufiq Reza, Kazi Bayzid Kabir, Kawnish Kirtania
Summary: The potential of a hydrogen-based energy system for Bangladesh is explored in this review, which includes a technological comparison of existing production paths, analysis of available resources and technology options, and envisioning a roadmap towards a hydrogen economy. While developed countries have already started their transition to a hydrogen economy, developing countries like Bangladesh face challenges in catching up. This study aims to provide insights and support for Bangladesh's transition to a carbon-free energy system.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
A. Anderson, Kathirvel Brindhadevi, Saleh H. Salmen, Tahani Awad Alahmadi, Anna Marouskova, M. Sangeetha, Manigandan Sekar
Summary: In this study, a photovoltaic hybrid thermal system was fabricated to effectively increase the production of electric output, and a PV/T system was also designed to produce hydrogen through electrolysis of water. The introduction of nanoparticles as cooling agents reduced the negative effects of high cell temperatures on electric output, and nanofluids MWCNT and Fe2O3 were examined for their potential to enhance electric output production without significant energy loss. The highest electrical output and thermal efficiency were obtained at 12.30 P.M., and the maximum hydrogen production was observed from 12.15 P.M. to 13.00 P.M.. The implementation of this method compensates for energy loss and achieves superior electrical output compared to conventional methods, and the use of the electrolyzer attached to the hybrid system allows for hydrogen generation and storage for future energy use.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Bamidele Victor Ayodele, Siti Indati Mustapa, Ramesh Kanthasamy, Norsyahida Mohammad, Abdulaziz AlTurki, Thanikanti Sudhakar Babu
Summary: This study analyzes the co-gasification process of coconut shell and oil palm wastes using machine learning algorithms and finds that the non-linear response quadratic model has the best predictive performance. The co-gasification temperature, catalysts loading, and blending amount play a significant role in the syngas composition.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
H. Ishaq, I. Dincer
Summary: The paper investigates three renewable energy based configurations for hydrogen production: solar PV, geothermal power generation, and biomass gasification. It suggests that biomass gasification technique provides higher hydrogen production efficiency compared to geothermal power generation and solar PV systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Chemistry, Physical
Ozgun Tezer, Nazlican Karabag, Atakan Ongen, Azize Ayol
Summary: This study investigates the gasification potential of olive pomace using different fixed-bed gasifier systems. The results show that syngas with high hydrogen content and heating value can be obtained under different temperatures and gasification agents. This research is significant for hydrogen production from large-scale fixed bed reactors.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Physical
Meisam Mahdavi, David Vera
Summary: Morocco heavily depends on fossil fuels import for its energy sector, but due to costly energy imports and growing energy demand, the country is seeking alternative energy sources. Morocco has abundant renewable energy sources and lower carbon emissions, making it a potential net-zero emission country in the short term. The study discusses the potential of hydro, solar, wind, and agricultural biomass energies in achieving renewable power generation and emissions reduction targets by 2030.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Debarun Banerjee, Nidhi Kushwaha, Nagaraj P. Shetti, Tejraj M. Aminabhavi, Ejaz Ahmad
Summary: Hydrogen, considered as the cleanest fuel, can be produced from various sources, including biomass. Conventional methods for hydrogen production have drawbacks, while photo-reforming of bio-renewable oxygenates has emerged as a promising and green alternative. The rate of hydrogen production via photoreforming depends on catalyst properties, oxygenate structure, operating conditions, and other factors.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
O. Siddiqui, I Dincer
Summary: A new solar energy-based rice husk gasification system is introduced, which produces renewable hydrogen, cooling, freshwater, and electricity. The hydrogen production rate under design operating conditions is 0.0603 kg/s, with a peak rate of 0.3 kg/s. Comprehensive thermodynamic analyses show that the overall design efficiency is 46.8%, with a net energy production rate of 12.9 MW.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Ruihan Dong, Shiliang Yang, Jianhang Hu, Fangjun Chen, Hua Wang
Summary: This study established a three-dimensional fuel reactor model using computational fluid dynamics and the multiphase particle-in-cell method to explore the thermochemical properties of gas and solid phases. The results indicated a positive correlation between heat transfer coefficient and Reynolds number for different particle species.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Multidisciplinary
Chawannat Jaroenkhasemmeesuk, Nakorn Tippayawong, Sirivatch Shimpalee, Derek B. Ingham, Mohammed Pourkashanian
Summary: The successful use of process modeling and simulation in fast pyrolysis plants has become essential in their design and operation. This study proposes an expanded pyrolysis simulation model for lignocellulosic biomass, which predicts the yield for both slow and fast pyrolysis processes and shows a significant correlation with experimental results. The simulation model is proven to be reliable in predicting pyrolysis yields and product composition.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Johannes Adamcyk, Stefan Beisl, Samaneh Amini, Thomas Jung, Florian Zikeli, Jalel Labidi, Anton Friedl
Summary: Despite major efforts in recent years, lignin as an abundant biopolymer is still underutilized in material applications. Production of lignin nanoparticles with improved properties through a high specific surface area enables easier applicability and higher value applications. This work provides detailed insight into the precipitation process of lignin nanoparticles, enabling better understanding and optimization with respect to different raw materials and pretreatment severities.
Review
Biotechnology & Applied Microbiology
Laura Daza-Serna, Sebastian Serna-Loaiza, Audrey Masi, Robert Ludwig Mach, Astrid Rosa Mach-Aigner, Anton Friedl
Summary: This review article covers the biotechnological production of erythritol from cultivation to downstream production, with a focus on comparing yields and by-products obtained with different types of substrates.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
Alexander Stolar, Anton Friedl
Summary: Process safety techniques have been used in industry for decades to enhance safety, optimize processes, and improve sustainability. These techniques can be applied in different phases of an application with minimal effort, focusing on a broad and universal applicability across various business sectors. Additional considerations such as maintenance and abnormal operating conditions are included to comprehensively enhance systems or applications.
INTERNATIONAL JOURNAL OF RELIABILITY QUALITY AND SAFETY ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Sebastian Serna-Loaiza, Manuel Dias, Laura Daza-Serna, Carla C. C. R. de Carvalho, Anton Friedl
Summary: Developing sustainable biorefineries is crucial for the transition to a sustainable society. This study evaluated the effects of liquid-hot-water pretreatment on sugars, degradation products, and lignin, providing important data for improving the sustainability of biorefineries.
Article
Green & Sustainable Science & Technology
Johannes Adamcyk, Sebastian Serna-Loaiza, Stefan Beisl, Martin Miltner, Anton Friedl
Summary: This study investigates the influence of temperature and lignin concentration on the precipitation of colloidal lignin particles, revealing that increasing mixing temperature results in smaller particle sizes while slightly decreasing yield. Decreasing lignin concentration significantly reduces particle size but has almost no effect on particle yield.
Article
Green & Sustainable Science & Technology
Laura Daza-Serna, Katarina Knezevic, Norbert Kreuzinger, Astrid Rosa Mach-Aigner, Robert Ludwig Mach, Joerg Krampe, Anton Friedl
Summary: This study assessed the use of electrodialysis for the purification of synthetic erythritol culture broth and the recovery of salts, providing an efficient alternative to minimize waste generation in erythritol production. Electrodialysis demonstrated potential in removing ions from the synthetic culture broth and further recovering them into a concentrated fraction, with low erythritol losses and energy consumption.
Article
Energy & Fuels
Tobias Proell, Anders Lyngfelt
Summary: The combination of chemical-looping combustion (CLC) and steam methane reforming (SMR) is a promising method for CO(2) capture and hydrogen production. By optimizing the dimensions of the SMR tube, it is possible to improve the performance and reduce the necessary tube length. Simulation results show that using smaller tube diameters can significantly decrease the required tube length for equivalent gas conversion.
Article
Energy & Fuels
Lukas Netzer, David Woess, Thomas Maerzinger, Werner Mueller, Tobias Proell
Summary: This study aims to demonstrate the advantages of a potential e-highway for logistics companies operating on Austria's roads. The results show that an e-highway can significantly reduce battery capacities and charging infrastructure requirements, with a cost reduction potential of up to 65%.
Article
Biotechnology & Applied Microbiology
Sebastian Serna-Loaiza, Christoph Kornpointner, Anita Pazzaglia, Christian Jordan, Heidi Halbwirth, Anton Friedl
Summary: Identifying and utilizing feedstocks is crucial for sustainable production. Waste materials from grape crops, particularly the Gruner Veltliner variety in Austria, have the potential for valorization. This study evaluated the extraction of bioactive compounds and production of sugars, lignin, and pulp from Gruner Veltliner grapevine shoots, demonstrating their potential for utilization.
FOOD AND BIOPRODUCTS PROCESSING
(2022)
Article
Energy & Fuels
Cornelia Hofbauer, Sebastian Serna-Loaiza, Irmgard Windisch, Luisa Scolari, Ayse Nur Koyun, Luis Zelaya-Lainez, Josef Fuessl, Hinrich Grothe, Ulrich Hirn, Anton Friedl, Michael Harasek
Summary: This study investigates the impact of different pretreatments on spruce sawdust in a two-step process, combining chemical pretreatments (liquid hot water, organosolv, and alkali) with mechanical pretreatment (refining). The material was then tested as composites, with promising combinations found for the two-step process. The goal is to create a fibrous material for biocomposite production using a natural binder instead of synthetic binders.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Review
Green & Sustainable Science & Technology
Bianca Koeck, Anton Friedl, Sebastian Serna Loaiza, Walter Wukovits, Bettina Mihalyi-Schneider
Summary: The collection of reliable data is crucial for the LCI phase, and automation can help obtain more realistic data. This paper surveys the current state of automation potential in process engineering LCI, focusing on the period from 2008 to 2021. The results show that automation is mostly used in process simulation, LCI database usage, and molecular structure models, with limited usage in other areas. It is recommended to encourage exchange in the LCA community and interdisciplinary settings to foster sustainable development of new automation methodologies.
Article
Green & Sustainable Science & Technology
Johannes Adamcyk, Stefan Beisl, Anton Friedl
Summary: The full utilization of renewable raw materials is crucial for sustainable economic development. Lignin, an abundant biopolymer, is currently primarily used for energy production. Ethanol organosolv pre-treatment has the potential to produce high-quality lignin, but faces economic challenges. This study explores the separation of extract and residual biomass at high temperatures to optimize lignin production, demonstrating a significant improvement in solid lignin yield at higher lignin concentrations.
Article
Energy & Fuels
L. Daza-Serna, A. Masi, S. Serna-Loaiza, J. Pfnier, G. Stark, R. L. Mach, A. R. Mach-Aigner, A. Friedl
Summary: The utilization of renewable feedstocks is gaining interest due to the increasing urgency to reduce dependence on fossil-based materials. Wheat straw has the potential for sustainable processes in a circular bioeconomy context. This study focuses on the hydrolysis of wheat straw using liquid hot water treatment, detoxification of the produced wheat straw hydrolysate, and cultivation of Trichoderma reesei as proof of detoxification.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Construction & Building Technology
Gerhard Hofer, Jan Kotik, Tobias Proell
Summary: The study focuses on optimizing a domestic hot water (DHW) circulation system in a modernized residential building in Vienna by installing a timer switch and temperature switch to control the operation of the circulation pump. The results show that the implementation of a temperature switch can significantly reduce DHW system heat losses, resulting in energy savings and no negative impact on user comfort and safety compliance.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Michael Schwaighofer, Markus Konigsberger, Luis Zelaya-Lainez, Markus Lukacevic, Sebastian Serna-Loaiza, Michael Harasek, Florian Zikeli, Anton Friedl, Josef Fussl
Summary: In this study, nanoindentation relaxation tests were re-evaluated on five industrial lignins extracted from different feedstocks. It was found that the viscoelastic properties of all tested lignins were practically identical and independent of the feedstock and the extraction processes.
MECHANICS OF MATERIALS
(2024)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)
