Article
Agricultural Engineering
Barbara Pereira, Wilian F. Marcondes, Walter Carvalho, Valdeir Arantes
Summary: An integrated biorefining strategy was used to fractionate Sugarcane bagasse into high-value coproducts, including xylooligosaccharides and cellulose nanofibrils. Ethanol production from the cellulose hydrolysate reached a high concentration with a conversion yield of 0.48 g/g and productivity of 1.40 g/L.h.
BIORESOURCE TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Eva Balaguer Moya, Berta Syhler, Julen Ordenana Manso, Giuliano Dragone, Solange I. Mussatto
Summary: This study evaluated the optimization of enzymatic hydrolysis cocktail to maximize sugar extraction from pretreated sugarcane bagasse. It was found that adding hydrogen peroxide at the beginning of hydrolysis increased glucose and xylose concentrations, while the addition of hemicellulase increased glucose and xylose production. These findings suggest that using an appropriate enzymatic cocktail supplemented with additives can enhance sugar extraction from lignocellulosic biomass and contribute to the development of a more sustainable and competitive process.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Agricultural Engineering
Jean Felipe Leal Silva, Pedro Y. S. Nakasu, Aline C. da Costa, Rubens Maciel Filho, Sarita C. Rabelo
Summary: This study presents a techno-economic analysis of pretreating sugarcane bagasse using the protic ionic liquid [MEA][OAc] and considering different washing methods. The results show that the best scenario resulted in a 33% increase in ethanol yield, along with an increase in wastewater and vinasse production.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Green & Sustainable Science & Technology
Michelle Garcia Gomes, Aline Gomes de Oliveira Paranhos, Adonai Bruneli Camargos, Bruno Eduardo Lobo Baeta, Milla Alves Baffi, Leandro Vinicius Alves Gurgel, Daniel Pasquini
Summary: This study evaluated the pretreatment of sugarcane bagasse with dilute citric acid solution for biogas production. The pretreated black liquor and residual solid fraction were used as substrates for biogas production. The highest concentration of total reducing sugars obtained after saccharifications was in the range of 10.7-184.8 g L-1, with sugar yields ranging from 3.5-88.8%. Biogas production from the black liquor and residual solid fraction showed promising results, indicating the feasibility of using dilute citric acid pretreatment in biorefineries.
Article
Energy & Fuels
Caroline Hartmann, Roselei Claudete Fontana, Felix Goncalves de Siqueira, Marli Camassola
Summary: Biological pretreatment using different basidiomycetes was shown to promote selective modifications in lignin content, leading to increased glucose release during enzymatic hydrolysis and enhanced ethanol yield during fermentation. The study demonstrated a positive effect of biological pretreatment on hydrolysis and fermentation processes.
BIOENERGY RESEARCH
(2022)
Article
Energy & Fuels
Diego Roberto Sousa Lima, Aline Gomes de Oliveira Paranhos, Oscar Fernando Herrera Adarme, Bruno Eduardo Lobo Baeta, Leandro Vinicius Alves Gurgel, Alexandre Soares dos Santos, Silvana de Queiroz Silva, Sergio Francisco de Aquino
Summary: This study evaluated the energy potential of biogas production from anaerobic digestion of sugarcane bagasse residues pre-treated with ozone for 2G ethanol production. It was found that mild ozonation conditions maximized ethanol production, with surplus energy generation covering the energy costs involved in the process. Combination of ozone treatment and alkaline extraction under suitable conditions also increased ethanol production and process sustainability.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Materials Science, Paper & Wood
Genaro Ramirez Vedia, Andreia de Araujo Morandim-Giannetti
Summary: This study evaluated the efficiency of producing second-generation ethanol and carboxymethylcellulose from sugarcane bagasse, finding that pretreatment with sec-butylammonium acetate (IL1) yielded the best results. Under the optimal pretreatment conditions, the conversion rate of sugarcane bagasse was 54.57%, and the fermentation yield after 24 hours was 71.77%.
Article
Agricultural Engineering
Livia Beatriz Brenelli, Lilian Regina Barros Mariutti, Rodrigo Villares Portugal, Marcelo Alexandre de Farias, Neura Bragagnolo, Adriana Zerlotti Mercadante, Telma Teixeira Franco, Sarita Candida Rabelo, Fabio Marcio Squina
Summary: The use of modified lignin as an emulsifier for oil-in-water nanoemulsions was found to influence the size of the oil droplets formed. Zeta potential measurements can predict the long-term stability of nanoemulsions. Oxidation experiments showed that smaller droplet sizes led to higher oxidation rates, although still below the threshold values.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Engineering, Chemical
Andrew M. Elias, Andreza A. Longati, Harikishan R. Ellamla, Felipe F. Furlan, Marcelo P. A. Ribeiro, Paulo R. F. Marcelino, Julio C. dos Santos, Silvio S. da Silva, Roberto C. Giordano
Summary: Research proposed two processes for producing biosurfactants from sugarcane bagasse, with the second process showing superior economic and environmental performance. Global sensitivity and uncertainty analyses indicated the need to focus on the performance and scaleup of bioreactors and ultrafiltration processes.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Guannan Shen, Xinchuan Yuan, Sitong Chen, Shuangmei Liu, Mingjie Jin
Summary: This study investigated a novel and cost-effective pretreatment method, DLCA, for sugarcane bagasse (SCB) to enhance its cellulosic ethanol production. The results showed that DLCA(sa)-SCB had high enzymatic digestibility and fermentability, and the simultaneous saccharification and co-fermentation (SSCF) process achieved a high ethanol titer. This study presents a promising approach for efficient bioconversion of SCB into ethanol.
Article
Agricultural Engineering
Kim Kley Valladares-Diestra, Luciana Porto de Souza Vandenberghe, Carlos Ricardo Soccol
Summary: This study developed an efficient pretreatment process to obtain a hemicellulose-rich fraction from sugarcane bagasse and used this fraction to produce xylooligosaccharides (XOs). By using in-house produced xylanolytic enzymes in the enzymatic hydrolysis process, XOs were successfully produced.
BIORESOURCE TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Juliana P. Sandri, Julen Ordenana, Thais S. Milessi, Teresa C. Zangirolami, Solange I. Mussatto
Summary: This study focuses on a feeding strategy to enhance high solid load enzymatic hydrolysis of sugarcane bagasse and sugar co-fermentation using a non-recombinant yeast co-culture. The findings provide significant contribution to improving the feasibility of second-generation biomass energy production.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Biotechnology & Applied Microbiology
Sreyden Hor, Mallika Boonmee Kongkeitkajorn, Alissara Reungsang
Summary: This study investigates the biorefinery of sugarcane bagasse into ethanol and xylitol. The results show that ethanol fermentation of sugarcane bagasse hydrolysate can be carried out without supplementing a nitrogen source, and approximately 50 g/L of bioethanol can be produced after 36 hours of fermentation. The vinasse containing xylose can be successfully used to produce xylitol, and supplementing the vinasse with yeast extract improves xylitol production. Controlled dissolved oxygen and the addition of low fraction of molasses do not positively affect xylitol production.
FERMENTATION-BASEL
(2022)
Article
Agricultural Engineering
Thaynara C. Pin, Livia B. Brenelli, Viviane M. Nascimento, Aline C. Costa, Yunqiao Pu, Arthur J. Ragauskas, Sarita C. Rabelo
Summary: This study investigated lignin dissolution with protic ionic liquids (PILs) and found that the ionicity of the PIL is a crucial factor for lignin dissolution. Different PILs treatments resulted in lignins with distinct properties, offering new perspectives for various applications.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Green & Sustainable Science & Technology
Qinghua Ji, Xiaojie Yu, Abu ElGasim A. Yagoub, Li Chen, Abdullateef Taiye Mustapha, Cunshan Zhou
Summary: The study demonstrated that the sequential pretreatment of ultrasound ethanol and ternary deep eutectic solvent effectively enhanced delignification and saccharification of sugarcane bagasse, showing promise for low-cost biorefinery development.
Article
Energy & Fuels
Leila M. A. Campos, Heloise O. M. A. Moura, Antonio J. G. Cruz, Samira M. N. Assumpcao, Luciene S. de Carvalho, Luiz A. M. Pontes
Summary: The study investigated the effects of SBC and commercial cellulose on enzymatic hydrolysis, and found that SBC had lower crystallinity and higher accessibility, resulting in higher glucose yield. The feedstock and cellulose treatment were found to be major factors influencing the saccharification efficiency, and using SBC achieved higher conversion.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Engineering, Chemical
Cristine De Pretto, Liceres Correa de Miranda, Paula Fernandes de Siqueira, Marcelo Perencin de Arruda Ribeiro, Roberto de Campos Giordano, Raquel de Lima Camargo Giordano, Caliane Bastos Borba Costa
Summary: This study aimed to model the enzymatic hydrolysis of proteins present in soybean protein concentrate meal using two steps. In the first step, the concentration of hydrolyzed peptide bonds was described as a function of time, using two kinetic models. In the second step, the way the enzyme breaks the protein down into smaller parts was investigated and modeled using an artificial neural network. The study found that while pH influenced the behavior of the reaction rate and the time profile of the degree of hydrolysis, it did not explicitly affect the peptide profile.
CHEMICAL ENGINEERING COMMUNICATIONS
(2022)
Article
Engineering, Chemical
C. E. Crestani, A. T. C. R. Silva, A. Bernardo, C. B. B. Costa, M. Giulietti
Summary: The study found that using a 90% ethanol aqueous solution can achieve optimal crystallization yield and morphology of fructose crystals, but at a high cost. To address this issue, a proposal for separating and reusing ethanol and mother-liquor was made in order to minimize production costs.
CHEMICAL ENGINEERING COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Murielk Sebrian Valvassore, Hanniel Ferreira Sarmento de Freitas, Cid Marcos Goncalves Andrade, Caliane Bastos Borba Costa
Summary: Hydrogen has gained attention as a sustainable energy source and biological hydrogen production is being explored as a potential method. This study focused on the cyanobacterium Cyanothece sp. ATCC 51142, which has a high rate of hydrogen production. By using computational simulation, the researchers found a feeding profile strategy and switch time that increased hydrogen production by 19.5% compared to previous literature.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Ivan I. K. Veloso, Kaio C. S. Rodrigues, Gustavo Batista, Antonio J. G. Cruz, Alberto C. Badino
Summary: This study aims to improve fed-batch ethanol fermentation under VHG/HCD conditions by modeling the process using appropriate kinetic models. The relationships between cell inhibition power parameter, cell yield coefficient, and fermentation conditions were established. The proposed model accurately predicted the dynamic behavior of the fermentations, as validated by experimental results.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2022)
Article
Energy & Fuels
Lucas F. Santos, Caliane B. B. Costa, Jose A. Caballero, Mauro A. S. S. Ravagnani
Summary: This study proposes a framework for optimizing the energy-efficient design of natural gas liquefaction process using algebraic surrogate models and efficient optimization methods, showing that multi-stage expansion can significantly increase energy savings.
Article
Engineering, Chemical
Victor Padua Teixeira, Mauro Antonio da Silva Sa Ravagnani, Caliane Bastos Borba Costa
Summary: In this article, an optimization approach for the synthesis of reactor networks is proposed. A stage-wise superstructure is used to formulate the mathematical model, and a mixed-integer nonlinear programming method is used. A bi-level meta-heuristic approach combining simulated annealing and particle swarm optimization is employed to solve the optimization problem. The results demonstrate the effectiveness of this method in improving the objective function in comparison to previous approaches.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Engineering, Chemical
E. Y. Emori, M. A. S. S. Ravagnani, C. B. B. Costa
Summary: This study investigates the control of a multiple-effect evaporation system in a sugarcane biorefinery and proposes a fuzzy controller based on a dynamic phenomenological model. Simulation results demonstrate that the proposed fuzzy scheme outperforms traditional PID controllers in terms of settling speed and integral time absolute error (ITAE) reduction.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Energy & Fuels
Brenda G. Campos, Ivan I. K. Veloso, Marcelo P. A. Ribeiro, Alberto C. Badino, Antonio J. G. Cruz
Summary: This study evaluated extractive fermentation with CO2 stripping as a method to overcome temperature control and water demand issues in sugarcane ethanol production. A mathematical model was developed and simulations showed that extractive fermentation could significantly reduce cooling water consumption and increase total ethanol content.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Energy & Fuels
Cassia M. Oliveira, Antonio J. G. Cruz, Caliane B. B. Costa
Summary: The growing demand and prices of fuel have driven the advancement of technologies in improving the production process of biofuels. Energy integration in sugarcane biorefineries allows for better utilization of utilities and cost reduction, while increasing ethanol or electricity production. This study evaluates two case studies and finds that energy integration can result in surpluses of up to 8.8% in ethanol and 31.7% in electricity, and enhances environmental resource utilization and energy security.
BIOENERGY RESEARCH
(2023)
Article
Energy & Fuels
Ivan I. K. Veloso, Brenda G. Campos, Mateus N. Esperanca, Antonio J. G. Cruz, Alberto C. Badino
Summary: Low-temperature very high gravity ethanol fermentation can produce high ethanol content wines with reduced vinasse production. CO2 stripping can effectively cool the fermentation vat. Simulation and experiments showed that low-temperature very high gravity fermentation can significantly reduce the water volume required with the use of gas stripping.
BIOENERGY RESEARCH
(2023)
Article
Engineering, Chemical
Debora Rosa da Silva, Murielk Sebrian Valvassore, Hanniel Ferreira Sarmento de Freitas, Caliane Bastos Borba Costa
Summary: This study aims to maximize the volume of hydrogen produced by Cyanothece sp. ATCC 51142 through in silico simulation and perform a sensitivity analysis to validate the deterministic optimization result. The results show that, despite uncertainties in model parameters and initial conditions, implementing the feeding policy recommended by the deterministic optimization study can increase hydrogen production per culture volume. Compared to the literature, the average increase in biofuel production is 22.9% with a standard deviation of 251 mL/L.
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Thermodynamics
Leandro V. Pavao, Lucas F. Santos, Cassia M. Oliveira, Antonio J. G. Cruz, Mauro A. S. S. Ravagnani, Caliane B. B. Costa
Summary: In sugarcane biorefineries, energy integration is crucial for determining the destination of by-products and ensuring the profitability of sales. The surplus sugarcane bagasse, a by-product of the sugar/ethanol production process, can be burned to produce steam for thermal demands or used for additional electricity production or second-generation ethanol production. This study proposes a flexible heat exchanger network design approach based on multiperiod synthesis, aiming to optimize the utilization of bagasse in different scenarios. The results demonstrate an increased maximum diversion of bagasse to 2G ethanol production with the new HEN design compared to the original design considered.
Article
Engineering, Chemical
Leandro V. Pavao, Caliane B. B. Costa, Mauro A. S. S. Ravagnani
Summary: Energy integration is a critical issue in process synthesis, and current methods often rely on simplifying assumptions for better computational efficiency. However, in near-critical or phase-changing conditions, the enthalpy of streams may vary significantly in a nonlinear way. This paper proposes an optimization approach using Pinch Analysis concepts to consider variations in heat capacity with temperature, leading to more accurate targeting of utility and heat exchange areas. Case studies demonstrate significant differences in utility allocations.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)
