Article
Chemistry, Physical
Jose Ignacio Arranz, Maria Teresa Miranda, Irene Montero, Francisco Jose Sepulveda
Summary: The study focused on the thermal characteristics and behavior of rice husks under different atmospheres, as well as the potential emission of pollutants to the atmosphere. The results suggested that rice husks could be used as biofuel in industrial thermal equipment due to their acceptable calorific value, good thermal characteristics, and low gas emissions.
Article
Biotechnology & Applied Microbiology
Yin Li, Fana Mulugeta Hagos, Rongrong Chen, Hanxin Qian, Chengxing Mo, Jing Di, Xikun Gai, Ruiqin Yang, Genxing Pan, Shengdao Shan
Summary: Hydrochars prepared by metal chloride-assisted hydrothermal carbonization of rice husk exhibit high carbon content and oxygen-containing functional groups, showing significant adsorption capacities for organic compounds with rapid adsorption equilibrium.
BIORESOURCES AND BIOPROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Jaqueline de Oliveira Brotto, Julia da Silveira Salla, Jean Constantino Gomes da Silva, Enrique Rodriguez-Castellon, Humberto Jorge Jose, Suelen Maria de Amorim, Regina de Fatima Peralta Muniz Moreira
Summary: The aim of this study is to investigate the thermal behavior of Pinus wood pellets during torrefaction under different operational conditions and evaluate the potential application of the torrefied product in metallurgical processes. The experimental results showed that high torrefaction temperature and residence time decreased the mass yield. The best torrefaction conditions for biomass with potential application in metallurgical processes were in an inert atmosphere, at 290 degrees C and a residence time of 15 min.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Thermodynamics
B. Rajh, M. A. Gomez, C. Alvarez-Bermudez, N. Cid, J. L. Miguez
Summary: This paper introduces two models for simulating packed bed biomass combustion, one based on a 1D experimental method and the other on an analytical 3D method. The performance of these models is tested through the simulation of a 60-kW wood pellet boiler under different operating conditions. The results show that both models have similar overall behavior, but the 1D model is more sensitive to the char oxidation correlations.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Fernanda Cristina Rezende Lopes, Katia Tannous
Summary: This study analyzed the thermal decomposition of coconut fiber through simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC), identifying three decomposition stages and obtaining specific heat capacities using different methods. The study also proposed linear equations to predict the specific heat capacities for different components of the biomass, providing valuable information for heat transfer modeling and reactor design.
THERMOCHIMICA ACTA
(2022)
Article
Energy & Fuels
Mei Jiang, Yinhai Su, Penggang Qi, Shuping Zhang, Yuanquan Xiong
Summary: The positive roles of hydrothermal pretreatment and acidic hydrothermal pretreatment were investigated in this study. The pyrolysis results showed that hydrothermal pretreatment greatly increased the content of levoglucosan (LG) in bio-oil and also enhanced the specific surface area of bio-char. Introduction of acid into the hydrothermal pretreatment process resulted in higher quality liquid and solid products obtained at lower pretreatment temperatures. Specifically, the LG content in the bio-oil increased from 0% in rice husk (RH) to 32.68% in the sample hydrothermal pretreated in deionized water at 170 degrees celcius (TRH170). Furthermore, the addition of acid optimized the pore distribution of activated bio-char, with noticeable increases in average pore size and efficient pore volume in the micro-pore section.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Biochemistry & Molecular Biology
Sandeep Gairola, Shishir Sinha, Inderdeep Singh
Summary: The study investigates the thermal kinetics and pyrolysis behavior of lignin extracted from barnyard millet husk (L-BMH) and finger millet husk (L-FMH) crop residue. Characterization techniques and TGA were used, and the results show the potential use of the extracted lignin as a flame retardant in polymer composites.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Chemical
Carmen Branca, Colomba Di Blasi
Summary: Fixed-bed pyrolysis of torrefied spruce wood at 800K showed char yields between 27-57 wt% (compared to 23 wt% for untreated wood), depending on pre-treatment temperatures and holding times. The thermogravimetric analysis revealed a low-temperature zone of slow rates followed by a high-rate zone with a well-defined peak. The torrefaction severity increased the temperature range of oxidative devolatilization and slowed down the oxidation rates, accompanied by changes in activation energies.
Article
Environmental Sciences
Oguzhan Alagoz, Nazan Yilmaz, Meltem Dilek
Summary: This study aims to utilize pomegranate peel waste through pyrolysis to produce beneficial products. The liquid product derived from the waste can be used as a biofuel, while the solid product can serve as an effective adsorbent for dye removal. Various characterization techniques were employed to analyze the bio-oil and biochar produced under optimal pyrolysis conditions. The results revealed the presence of phenol, alcohol, ketone, and aldehyde groups in the bio-oil, and the activated carbon derived from biochar exhibited a high surface area. The adsorption analysis showed that the efficiency was influenced by pH, temperature, and initial concentration.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Plant Sciences
Hamza Bouras, Redouane Choukr-Allah, Younes Amouaouch, Ahmed Bouaziz, Krishna Prasad Devkota, Ayoub El Mouttaqi, Bassou Bouazzama, Abdelaziz Hirich
Summary: Soil salinity is a major problem in arid and semi-arid regions, affecting crop growth and yield. This study suggests that applying phosphorus fertilizer under saline conditions can minimize the negative effects of salinity and improve the yield of quinoa. The leaf mineral nutrient content and uptake are also influenced by phosphorus fertilization.
Article
Multidisciplinary Sciences
Caijing Han, Bingjie Lin, Xinyu Huang, Zhaojie Mao, Xiaoting Kong, Lei Fang, Peng Xue, Anning Wang, Fengxiang Zhang
Summary: In order to improve the treatment of pigmentation disorders, researchers are looking for natural and safe inhibitors of melanin synthesis. In this study, quinoa husk peptides were purified using 30% and 80% ethanol. The 80% ethanol fraction, known as QHP fraction, showed superior inhibitory effects on tyrosinase, scavenging of free radicals, reducing activity, and chelating capacity compared to the 30% fraction. Additionally, differentially expressed genes in the QHP fraction were primarily enriched in Akt-signaling pathways.
Article
Energy & Fuels
Andreas Niebel, Axel Funke, Cornelius Pfitzer, Nicolaus Dahmen, Nicole Weih, Daniel Richter, Bernd Zimmerlin
Summary: The bioliq process developed at KIT aims to convert lignocellulosic biomass into synthetic biofuels and chemicals through a two-stage concept of fast pyrolysis and gasification synthesis. The process has successfully converted ash-rich biomass residues like wheat straw into products, with consistent mass yields and properties compared to literature data. Experience from long-term operation and technical modifications have improved operational stability of the plant.
Article
Chemistry, Physical
Penggang Qi, Yinhai Su, Shuping Zhang, Mei Jiang, Xiaofei Sun, Lei Shi, Yuanquan Xiong
Summary: An innovative biomass conversion method for co-producing porous carbon and high purity hydrogen was proposed. The study demonstrated that alkaline thermal treatment could produce porous carbon with a high specific surface area and high purity hydrogen. The reaction conditions significantly influenced the properties of the products.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Energy & Fuels
Andrew P. Richards, Denver Haycock, Jacob Frandsen, Thomas H. Fletcher
Summary: Accurately measuring a fuel's heating value is crucial for classification, with various empirical correlations based on primary organic elemental composition available for predicting heating values. However, correlations for coal chars and tars are lacking, and the choice of model becomes more crucial for biomass fuels and unique fuel types like propellants and explosives.
Article
Thermodynamics
Thiago Olinek Reinehr, Monalisa Ayumi Ohara, Mayara Patricia de Oliveira Santos, Joao Lucas Marques Barros, Paulo Rodrigo Stival Bittencourt, Ilton Jose Baraldi, Edson Antonio da Silva, Elciane Regina Zanatta
Summary: This paper suggests the use of green corn husk as an alternative source of energy through pyrolysis. Characterization and pyrolysis study were done using various methods, revealing the biomass's potential as a renewable energy source. The higher calorific value and pyrolysis kinetics parameters were also measured and analyzed.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Biotechnology & Applied Microbiology
C. Escapa, R. N. Coimbra, S. Paniagua, A. I. Garcia, M. Otero
JOURNAL OF APPLIED PHYCOLOGY
(2017)
Article
Green & Sustainable Science & Technology
S. Paniagua, L. Escudero, C. Escapa, R. N. Coimbra, M. Otero, L. P. Calvo
Article
Biotechnology & Applied Microbiology
C. Escapa, R. N. Coimbra, S. Paniagua, A. I. Garcia, M. Otero
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2016)
Article
Environmental Sciences
C. Escapa, R. N. Coimbra, S. Paniagua, A. I. Garcia, M. Otero
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2017)
Article
Thermodynamics
Sergio Paniagua, Luis Fernando Calvo, Carla Escapa, Ricardo N. Coimbra, Marta Otero, Ana I. Garcia
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2018)
Article
Environmental Sciences
Carla Escapa, Ricardo N. Coimbra, Cristina Nuevo, Samuel Vega, Sergio Paniagua, Ana I. Garcia, Luis F. Calvo, Marta Otero
Article
Environmental Sciences
S. Paniagua, L. Escudero, R. N. Coimbra, C. Escapa, M. Otero, L. F. Calvo
WASTE AND BIOMASS VALORIZATION
(2018)
Article
Energy & Fuels
Sergio Paniagua, Ana Garcia-Perez, Luis F. Calvo
BIOMASS CONVERSION AND BIOREFINERY
(2019)
Article
Energy & Fuels
Sergio Paniagua, Alba Prado-Guerra, Ana Isabel Garcia, Luis Fernando Calvo
BIOMASS CONVERSION AND BIOREFINERY
(2019)
Article
Green & Sustainable Science & Technology
E. D. Vicente, A. M. Vicente, M. Evtyugina, R. Carvalho, L. A. C. Tarelho, S. Paniagua, T. Nunes, M. Otero, L. P. Calvo, C. Alves
Article
Energy & Fuels
Sergio Paniagua, Laura Zanfano, Luis Fernando Calvo
Article
Green & Sustainable Science & Technology
Alejandro Perez, Begona Ruiz, Enrique Fuente, Luis Fernando Calvo, Sergio Paniagua
Summary: The aim of the research was to study the potential of Cortaderia selloana through a pyrolytic process to help reduce its expansion in Iberian Peninsula ecosystems.
Article
Chemistry, Analytical
Begona Ruiz, Enrique Fuente, Alejandro Perez, Luis Taboada-Ruiz, Juan Marcos Sanz, Luis Fernando Calvo, Sergio Paniagua
Summary: The textile industry is highly polluting, generating millions of tons of waste annually. This study focused on the energy potential of three types of industrial textile waste: CW, SFW, and W, using conventional and flash pyrolysis at different temperatures. The results showed that bio-oil yields were highest in low-temperature flash pyrolysis and conventional pyrolysis, with the highest heating value obtained from SFW waste. The bio-oils obtained contained aromatic and non-aromatic compounds, with high levels of phenols and benzenes in low-temperature pyrolysis and polycyclic aromatic hydrocarbons in high-temperature pyrolysis.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Education, Scientific Disciplines
Sergio Paniagua, Raul Herrero, Ana Isabel Garcia-Perez, Luis Fernando Calvo
EDUCATION FOR CHEMICAL ENGINEERS
(2019)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.