Article
Polymer Science
Cristian Cerda-Barrera, Kevin J. Fernandez-Andrade, Serguei Alejandro-Martin
Summary: Biomass utilization is important for obtaining value-added compounds instead of direct burning. This study conducted a kinetic analysis of the thermogravimetry and pyrolysis of biomass from southern Chile. The results showed that Pinus radiata and Eucalyptus nitens were the most suitable biomasses for producing value-added goods, and they produced bio-oil containing phenolic, ketonic, and furanic compounds, indicating their potential for thermoconversion processes.
Article
Biotechnology & Applied Microbiology
Sajjad Rasam, Kolsoom Azizi, Mostafa Keshavarz Moraveji, Ali Akbari, Antonio Soria-Verdugo
Summary: Co-pyrolysis of binary and ternary blends of different biomass samples was analyzed. The study evaluated the synergistic effects of mixing different biomass samples. The results showed that blending different samples resulted in lower activation energy and both synergistic and inhibitive effects were observed.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Thermodynamics
T. Asimakidou, K. Chrissafis
Summary: This study investigates the thermal decomposition process of olive stone samples through thermogravimetric analysis (TGA) and analyzes the changes in crystal structure and morphology at different pyrolysis temperatures. The results demonstrate that the thermal behavior of the olive stone samples is consistent with that of lignocellulosic materials.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Environmental Sciences
Claudia Gonsalves de Azevedo, Renivaldo Jose dos Santos, Carlos Toshiyuki Hiranobe, Andreia Fatima Zanette, Aldo Eloizo Job, Michael Jones Silva
Summary: The increase in global demand and environmental concerns have highlighted the need for new energy sources. This study suggests that aquatic biomasses, particularly those from invasive aquatic macrophytes, have the potential to be low-cost biomass and bioenergy sources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biochemistry & Molecular Biology
Jonathan M. Sanchez-Silva, Raul Ocampo-Perez, Erika Padilla-Ortega, Diakaridia Sangare, Miguel A. Escobedo-Bretado, Jorge L. Dominguez-Arvizu, Blanca C. Hernandez-Majalca, Jesus M. Salinas-Gutierrez, Alejandro Lopez-Ortiz, Virginia Collins-Martinez
Summary: This study aims to analyze the pyrolysis kinetics of Nanche stone BSC as an agro-industrial waste by determining key parameters such as apparent activation energy, pre-exponential factor, and reaction model. The results indicate the potential of BCS for producing bioenergy products due to its low moisture and ash content and high volatile matter content. The thermodynamic parameters also suggest the feasibility of the pyrolysis process.
Article
Chemistry, Analytical
Xiaojuan Guo, Zhou Xu, Xin Zheng, Xu Jin, Junmeng Cai
Summary: This study analyzed the physicochemical characteristics, kinetics, and thermodynamics of corn and cotton stalks pyrolysis. The results showed that their pyrolysis processes are nonspontaneous, requiring external energy, and their endothermicity and reactivity increase as the pyrolysis progresses.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Energy & Fuels
Bowen Lin, Jingsong Zhou, Qianwen Qin, Cong Xie, Zhongyang Luo
Summary: The study investigated the pyrolysis kinetics of cornstalk, bamboo fiber powder, and their blends with anthracite using a differential isoconversional method. The role of anthracite additive varied with different biomasses, affecting the activation energy differently. Deconvolution by the Fraser-Suzuki function improved the accuracy and reasonableness of the kinetic analysis.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Polymer Science
Haibo Wan, Zhen Huang
Summary: A detailed kinetic analysis of the pyrolysis processes of Tennis string polyurethane (TSPU) waste and waterborne polyurethane (WPU) waste was conducted in this study. Experimental results showed different stages and thermal dependences for TSPU and WPU. Thermodynamic parameters and mechanism functions were calculated to support the design of pyrolysis reactors for polyurethane wastes.
Article
Chemistry, Physical
Hai-Bo Wan, Zhen Huang
Summary: This study conducted experimental measurements and kinetic analysis of the pyrolysis process of nylon-6/polyethylene double-layer pouch wastes. By utilizing various isoconversional model-free methods, the most appropriate mechanism function and kinetic parameters were identified, and the experimental results were accurately predicted. The study also estimated the service life and thermodynamic parameters of the pyrolysis process.
Article
Thermodynamics
Mukesh Kumar Meena, Shaivya Anand, Deepak K. Ojha
Summary: This study employs a holistic approach to study the fundamentals of lignocellulosic biomass combustion, analyzing ignition properties, energy and mass transport limitations, and the quantity of energy released and demanded at different stages of the combustion process. The study suggests that the energy-demanding pyrolysis process greatly influences the overall combustion process.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Green & Sustainable Science & Technology
Gozde Gozke
Summary: Converting watermelon seeds into biomass energy is an environmentally friendly opportunity to meet energy demand and reduce reliance on fossil fuels. This study investigated the thermogravimetric pyrolysis of watermelon seeds and determined the pyrolysis characteristics and activation energies. Thermodynamic parameters were also calculated.
Article
Green & Sustainable Science & Technology
Syed Lal Badshah, Zahir Shah, Jose Luiz Francisco Alves, Jean Constantino Gomes da Silva, Arshad Iqbal
Summary: The freshwater alga Spirogyra crassa was studied for its pyrolysis behavior, revealing four reaction steps with different kinetic triplets. The activation energy and preexponential factors were determined, indicating a non-spontaneous, endothermic, and complex conversion process. The study suggests Spirogyra crassa has potential as a bioenergy feedstock.
Article
Green & Sustainable Science & Technology
Arun K. Vuppaladadiyam, Elsa Antunes, Paula Blanco Sanchez, Hubao Duan, Ming Zhao
Summary: The synergistic influence of microalgae on the co-pyrolysis of biomass wastes and its digested form was evaluated in terms of thermal decomposition behavior, gas yields, extent of thermal decomposition, and reaction kinetics. Microalgae were found to have a significant impact on reaction kinetics, reducing the apparent activation energy and increasing total gas yields, thus aiding in the design and optimization of co-pyrolysis processes.
Article
Chemistry, Analytical
Hoon Chae Park, Dong Won Yun, Myung Kyu Choi, Hang Seok Choi
Summary: In this study, a spouted-bed thermogravimetric analyzer (SB-TGA) was developed to accurately investigate the reaction models and kinetic parameters of spouted beds. The analyzer overcomes the disadvantages of conventional thermogravimetric analyzers that arise from different hydrodynamics. The experimental results demonstrate that the SB-TGA provides more reliable results for predicting the pyrolysis reaction in a spouted-bed.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Energy & Fuels
Quoc Khanh Tran, Hoang Vu Ly, Hyun Tae Hwang, Jinsoo Kim, Seung-Soo Kim
Summary: The study investigated the pyrolysis characteristics and kinetics of Organosolv lignin from pine trees using various methods, determining activation energies and reaction pathways. The main products of pyrolysis were phenol and guaiacol derivatives, with some depolymerization into lower-molecular-weight components. The effects of alkali and alkaline earth metals on pyrolysis were also studied, with magnesium showing the most effectiveness in reducing activation energy.
Article
Engineering, Chemical
Monica Calero, Rafael R. Solis, Mario J. Munoz-Batista, Antonio Perez, Gabriel Blazquez, Ma Angeles Martin-Lara
Summary: Different plastics from solid waste were sorted and analyzed by pyrolysis. The oil yield varied among different types of plastics, with EPS > PP > PE > HIPS > PET > PVC. The composition of the produced oils differed as well, with HIPS and EPS oils being aromatic, PVC and PET oils containing a significant amount of aromatics, and PE oil rich in olefins. Methane was the dominant gas component in all pyrolysis gases, followed by ethane.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Environmental
Ana Ligero, Monica Calero, Antonio Perez, Rafael R. Solis, Mario J. Munoz-Batista, M. Angeles Martin-Lara
Summary: Chemical recycling of plastic waste through pyrolysis is a potential approach, but little attention has been given to the reuse of the resulting char residue. This study focuses on the preparation of activated carbons from char residues obtained from the pyrolysis of post-consumer plastic waste, which have been applied to CO2 adsorption.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Review
Engineering, Environmental
S. Perez-Huertas, M. Calero, A. Ligero, A. Perez, K. Terpilowski, M. A. Martin-Lara
Summary: In circular economy, plastic materials are recycled through pyrolysis, which generates gas, liquid, and solid products. However, commercial applications for the solid product have not been found yet. This article reviews the preparation and properties of plastic-based activated carbons, and discusses their application for CO2 capture in biogas upgrading processes.
Article
Engineering, Environmental
Alicia Ronda, Pedro Haro, Alberto Gomez-Barea
Summary: The management of sewage sludge is still a challenge in the EU sustainability plan for biowaste. Technical issues related to heavy metals and pollutants in the waste-to-energy process are not well understood. This study proposes an integrated assessment from a sustainability perspective to evaluate different valorization options, with gasification being the most sustainable alternative. Real data from wastewater treatment plants in Andalusia are used to evaluate a decentralized gasification scheme.
Article
Green & Sustainable Science & Technology
Veronica Godoy, Joana Correia Prata, Antonio Perez, Joao Pinto da Costa, Teresa Rocha-Santos, Armando C. Duarte
Summary: The main objective of this study was to estimate the microplastic pollution on Costa Nova sandy beach in Portugal using longitudinal and cross-sectional transects. The results showed low variability in data, with median concentrations ranging from 142 to 356 p/kg d.w. in cross-sectional transects, and from 211 to 270 p/kg d.w. in longitudinal transects. Microspheres were the predominant morphology, accounting for over 90% of all samples, and the most abundant microplastics were <200 μm in size. Despite moderate-low tourist activity, microplastic contamination was higher in Costa Nova compared to other Portuguese beaches, possibly due to nearby port activities and ocean currents. However, this study highlights the disparity in data caused by different methodologies used in analyzing similar areas.
Review
Chemistry, Multidisciplinary
Juan Jesus de la Torre Bayo, Maria Angeles Martin-Lara, Monica Calero Hoces, Pedro Miguel Sanchez Castillo, Hector J. Pula, Montserrat Zamorano
Summary: Using science mapping, we analyzed the increasing number of scientific documents on the negative environmental impacts of PPE waste, particularly face masks, used for reducing SARS-CoV-2 transmission. India, China, and Canada emerged as leaders in this research field, focusing on environmental issues and engineering solutions. Our analysis highlighted the significant negative effects of PPE waste on aquatic ecosystems, greenhouse gas emissions, and wildlife. To address these impacts, innovative ecodesign strategies for green production, reuse, and recycling, as well as collaboration with the public to reduce waste at its source, are essential. Implementing a collective, extended producer responsibility system for PPE can ensure sustainable production and consumption, contributing to the achievement of sustainable development goals.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Francisco Ortega, Maria Angeles Martin-Lara, Hector J. Pula, Montserrat Zamorano, Monica Calero, Gabriel Blazquez
Summary: This research aims to develop a new strategy to convert wasted COVID-19 masks into useful products through chemical recycling by pyrolysis. The results showed that pyrolysis at different temperatures yielded valuable solid (biochar), liquid (biooil), and syngas products. By using a two-stage pyrolysis catalytic reactor with sepiolite as a catalyst, the final yield of syngas product increased and the composition of biooils changed. The study also examined the effect of sepiolite regeneration on consecutive pyrolysis tests.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Francisco Jose Alarcon, Monica Calero, Salvador Perez-Huertas, Maria Angeles Martin-Lara
Summary: In recent years, both Lean and Six Sigma have gained attention in manufacturing processes for their ability to eliminate waste and reduce production costs. However, their application in the chemical manufacturing sector has been less studied and implemented. This study explores the current trends and perspectives of Lean and Six Sigma integration in chemical manufacturing through a bibliometric analysis, revealing important contributions and discussing future research directions.
APPLIED SCIENCES-BASEL
(2023)
Article
Energy & Fuels
M. F. Paucar-Sanchez, M. A. Martin-Lara, M. Calero, G. Blazquez, R. R. Solis, M. J. Munoz-Batista
Summary: This contribution proposes an in-situ catalytic pyrolysis process to valorize rejected plastic wastes from mechanical-biological treatment. It focuses on producing a liquid fraction with similar properties to traditional fuels and utilizes Simulated Distillation, hydrocarbon types analysis, CHNS-O analysis, and Fourier Transform Infrared Spectroscopy for fuel fraction identification. The catalytic structures Sepiolite and Montmorillonites (K10 and K30) are employed, and their properties affecting the catalytic activity and product yields are analyzed. A comparison with hydrocarbons from the petroleum industry is provided to evaluate the technology in the current energy scenario.
Article
Chemistry, Multidisciplinary
Ana Ligero, Monica Calero, M. Angeles Martin-Lara, Gabriel Blazquez, Rafael R. Solis, Antonio Perez
Summary: The potential use of activated char obtained from the pyrolysis of non-recyclable plastics for CO2 adsorption in fixed-bed columns was investigated. The plastic waste collected from a municipal solid treatment plant was pyrolyzed to produce char residue, which was then activated to create a porous carbonaceous material. Continuous column tests demonstrated successful fitting of breakthrough curves to the dose-response model. The effects of adsorption temperature, CO2 concentration, and bed length on process efficiency were evaluated using surface response methodology.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Physical
M. Calero, V. Godoy, C. Garcia Heras, E. Lozano, S. Arjandas, M. A. Martin-Lara
Summary: In recent years, Europe has strengthened legislation to combat climate change. However, the adoption of these legal measures in Spain lags behind other countries and some financial aspects are underdeveloped. Nevertheless, the approved measures promote the development of biomethane and other renewable gases and aim to reduce greenhouse gas emissions.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Engineering, Environmental
Xingxing Hu, Lingjie Liu, Yanmeng Bi, Lu Li, Chunsheng Qiu, Jingjie Yu, Shaopo Wang
Summary: In this study, the impact of exogenous folate on the start-up process of single-stage partial nitritation-anammox (SPNA) was evaluated using two lab-scale reactors. The results showed that folate addition can enhance nitrogen removal rate, extracellular polymeric substances production, hydrazine oxidase and dehydrogenase activity, as well as the relative abundance of Candidatus Brocadia.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Shaocang He, Tingting Shen, Jing Sun, Haoqi Pan, Chenxu Sun, Tianpeng Li, Runyao Li, Enshan Zhang
Summary: A novel process of acid leaching neutralization was developed for the preparation of inorganic polymeric composite ferric aluminum silicate coagulant (CFAS) using solid waste coal gasification coarse slag (CGCS). The optimized preparation process was determined through single-factor experiment and the performance of CFAS was evaluated for domestic sewage treatment. The results showed that CFAS exhibited excellent coagulation ability and achieved significant removal efficiency for turbidity, ammonia nitrogen, and chemical oxygen demand.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kinga Szatmari, Sandor Nemeth, Alex Kummer
Summary: In this article, a resilience-based reinforcement learning approach is proposed to address the potential thermal runaway issue in batch reactors. By calculating the resilience metric for reactors and utilizing Deep Q-learning to decide when to intervene in the system, resilient-based mitigation systems can be effectively developed.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingyou Jiang, Qi Yao, Mingqing Su, Jingjing Li, Kunlun Lu, Dawei Ding, Han Hong
Summary: This study investigates the inhibitory characteristics and mechanisms of ABC powder on coal powder explosion. The addition of ABC powder significantly decreases the maximum explosion pressure and can completely suppress coal dust explosions. The study also reveals the thermal decomposition characteristics and reaction kinetics of the mixed system.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kubilay Bayramoglu, Mustafa Nuran
Summary: This study examines the feasibility of using pyrolytic oil from waste tires as fuel in diesel engines, and evaluates its energy, exergy, and sustainability. The results indicate that pyrolytic oil has potential as a renewable fuel source with relatively high thermal efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Xinru Duan, Yejia Lv, Jiaxing Hong, Jianzhong Wu, Jia Zhang, Yang Yue, Guangren Qian
Summary: This study successfully prepared a tube reactor with optimized catalyst formula, which showed good performance in removing dioxins and other pollutants in the experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Jiaoyang Du, Xueming Dang, Xiaorong Gan, Xin Cui, Huimin Zhao
Summary: In this study, a photocatalyst-enzyme hybrid system was constructed, which solved the issue of enzyme inactivation caused by high concentration of H2O2 through photocatalytic in-situ H2O2 production, and improved the stability and catalytic efficiency of the enzyme. The effectiveness of the system in treating phenolic EDCs was confirmed through experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Fu-Rong Xiu, Longsheng Zhan, Yingying Qi, Xinyue Lei, Jiali Wang, Haipeng Zhou, Wenting Shao
Summary: This study developed a synergetic and high-efficiency treatment of waste tantalum capacitors (WTCs) and polyvinyl chloride (PVC) using subcritical water process. The treatment significantly reduced the temperature and reaction time for metal tantalum recovery from WTCs, and improved the dechlorination efficiency of PVC. The optimized conditions resulted in 100% resin conversion efficiency of WTCs and 97.39% dechlorination efficiency of PVC. The interaction between decomposition products of WTCs and PVC produced a high level of benzoic acid.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingda Li, Jiaming Song, Yuting Li, Chaoying Meng, Shuxian Wang, Linghao Zong, Honggang Ye, Yishuai Jing, Feng Teng, Peng Hu, Haibo Fan, Guangde Chen, Xin Zhao
Summary: CdPS3 nanosheets, especially those exfoliated by sodium cholate, have shown highly efficient photocatalytic degradation performance. The strong dark adsorption and dye-sensitized photocatalytic properties of CdPS3 nanosheets contribute to high degradation efficiencies of various pollutants.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Dongxu Ouyang, Yimei Pang, Bo Liu, Zhirong Wang
Summary: This study investigates the thermal runaway features of lithium-ion cells under tunnel conditions, considering different states of charge and tunnel ceilings. The results show that the tunnel visibility is affected by the smoke generated during thermal runaway, and the shape of the tunnel ceiling influences the temperature rise differently.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
