Article
Agricultural Engineering
Jian Han, Bin Xu, Huan Wang, Guohong Huang, Xiaolei Zhang, Yong Xu
Summary: The acid hydrolysis of lignocellulosic biomass has potential for industrial applications, but the complex degradation products in the hydrolysate can have restrictions and toxicity on subsequent utilization. This study used anion-exchange resin to separate and purify the main degradation products from acidic corncob-hydrolysate, with significant removal of acetic acid, furfural, and lignin while minimizing loss of xylose. The results provide a theoretical basis for the separation, purification, and bioconversion of acidic lignocellulose-hydrolysate.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Dheer A. Rambhia, Sravanthi Veluturla, Archna Narula
Summary: The ketalization reaction of glycerol with acetone was studied using a gel-type ion exchange resin in a solvent-free medium, with parameters such as molar ratio, catalyst loading, stirring rate, and temperature analyzed for their impact on glycerol conversion. A kinetic model based on the LHHW equation was used to describe the kinetics of the system, with parameters evaluated using MATLAB software. The study provides an economical approach for valorizing biodiesel-derived glycerol.
TURKISH JOURNAL OF CHEMISTRY
(2022)
Article
Geochemistry & Geophysics
Takeru Kochi, Toshihiro Yoshimura, Nanako O. Ogawa, Naohiko Ohkouchi, Yasuyuki Kobayashi, Junichiro Kuroda
Summary: A method using weakly acidic cation exchange resins was developed to extract sulfur from carbonate minerals, allowing for the measurement of sulfur mass fractions and isotopes.
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
(2023)
Article
Chemistry, Physical
Christianah Aarinola Akinnawo, Lebohang Mosia, Oyekunle Azeez Alimi, Charles O. Oseghale, Dele Peter Fapojuwo, Ndzondelelo Bingwa, Reinout Meijboom
Summary: Mesoporous ZrO2 exhibits good stability and selectivity in glycerol acetalization with aldehydes, with a selectivity of over 50% to 1,3-dioxane. This performance is attributed to its high surface area and Lewis acidity. The green application of meso-ZrO2 catalysts for sustainable acetalization of glycerol may be easily extended to other bio-based industrial processes.
CATALYSIS COMMUNICATIONS
(2021)
Article
Engineering, Environmental
M. Hermassi, M. Granados, C. Valderrama, C. Ayora, J. L. Cortina
Summary: A polymeric ion-exchange resin and a solvent impregnated resin were evaluated for the selective separation of Rare Earth Elements from various elements in acidic mine waters. The resins showed good separation factors through acidity control and the TP272 resin exhibited higher affinity towards Heavy REE. The integration of both resins could be used to recover REE as secondary resources for the clean energy technology industry.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
William M. Godoy, Leandro G. Aguiar, Nuno A. B. S. Graca, Alirio E. Rodrigues
Summary: This study synthesized sulfonated polymer resins based on styrene and TMPTA and assessed their catalytic efficiency in glycerol acetylation. A factorial design was employed to study the effects of cross-linker percentage and cross-linker feed time. Lower cross-linker percentages resulted in higher catalytic efficiencies, and there was a linear correlation between catalytic efficiency and cross-linker percentage. Statistical and kinetic models were developed to represent the experimental results and support resin formulation improvement strategies. The TMPTA feed time positively influenced catalytic efficiency, indicating the importance of resin micro- and macrostructure.
Article
Engineering, Chemical
Junyang Liu, Luming Wang, Yuhang Bian, Chunshan Li, Zengxi Li, Jie Li
Summary: The kinetic behavior of esterification between methacrylic acid and methanol catalyzed by NKC-9 resin in a fixed bed reactor was studied. The reaction was conducted at temperatures ranging from 323.15 to 368.15 K with a molar ratio of reactants from 0.8 to 1.4 under certain pressure. Three different kinetic models were used to fit the experimental data, and the Langmuir-Hinshelwood model showed the best fitting results. The stability of the NKC-9 resin was evaluated through long-term operation, showing no decrease in the yield of methyl methacrylate during 3000 hours. The structure and physicochemical properties of the catalyst were analyzed using various characterization techniques.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Review
Chemistry, Physical
Yangzi Liu, Jiayu Liu, Zhihao Xing, Xueqian Zhang, Chen Luo, Wenjuan Yan, Xin Jin
Summary: In this work, a comprehensive summary on the kinetic modeling of glycerol hydrogenolysis has been conducted, which reveals the possible mechanism involved in the activation of the C-H and C-O bond in glycerol molecules. The study offers alternative views on the scale-up design of glycerol hydrogenolysis to glycols, as well as the hydrogenolysis of various other bio-derived compounds to value-added chemicals.
Article
Engineering, Environmental
Xiaobo Zhu, Xiaohui Yang, Wang Li, Yue Liu
Summary: The study found that resin D851 had higher vanadium adsorption efficiency in acidic wastewater compared to D201, and it had better selectivity. The equilibrium adsorption capacities for vanadium (IV) were 162mg/g and 104mg/g, respectively. Additionally, after regeneration, the adsorption efficiency of vanadium with resin D851 remained above 97%.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Biochemical Research Methods
Matthias Schmitt, Marina Egorycheva, Andreas Seubert
Summary: Mixed-acidic cation-exchange (MCX) columns with adjustable selectivity were developed for the separation and quantitation of standard amino acids. The resins were prepared by carboxylation and sulfonation of crosslinked polymer particles, and the functionalization was controlled by measuring pH dependent retention. The method allowed fast analysis of 20 underivatized amino acids within 30 minutes.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Engineering, Multidisciplinary
Federico M. Perez, Martin N. Gatti, Nora N. Nichio, Francisco Pompeo
Summary: This work studied the chemical equilibrium of glycerol acetylation with acetic acid to form different acetylglycerols and determined the physicochemical and thermodynamic properties of these compounds. The results showed that high conversions and yields can be achieved under certain conditions.
RESULTS IN ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Rubieli Carla Frezza Zeferino, Vinicius Aleixo Angonese Piaia, Vinicius Tres Orso, Vitor Machado Pinheiro, Micheli Zanetti, Gustavo Lopes Colpani, Natan Padoin, Cintia Soares, Marcio Antonio Fiori, Humberto Gracher Riella
Summary: In this study, neryl acetate was successfully synthesized through heterogeneous catalysis, with optimal conditions of 40 degrees C temperature, 7% catalyst content, 1:4 molar ratio, 250 rpm agitation speed, and 3 mmol nerol content. The catalyst showed high conversion and selectivity even after 3 cycles of reuse, indicating low loss of catalytic activity.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Engineering, Environmental
Yanying Hou, Lujie Liu, Qiaole He, Di Zhang, Jiayang Jin, Banghe Jiang, Liming Zhao
Summary: This study investigated the adsorption characteristics of chitooligosaccharides on ion-exchange resin and found that the adsorption equilibrium followed the Langmuir model, with adsorption capacity decreasing with increasing degree of polymerization. The adsorption kinetics were well described by the pseudo-second-order kinetic model. Liquid-film diffusion and intra-particle diffusion were identified as the rate-limiting steps for adsorption. Thermodynamic analysis revealed that the adsorption of chitooligosaccharides on HX-7 resin was spontaneous and feasible, with higher polymerization degrees leading to stronger interaction forces and more favorable adsorption.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Chunrui Han, Rui Wang, Chang Shu, Xingang Li, Hong Li, Xin Gao
Summary: This article introduces a method of using reactive distillation to recover EG and byproduct 1,2-BC, and investigates the kinetic parameters of different reaction systems. The results show that the reaction rate of EG with DMC is faster, and BC is more stable than EC. The article also compares the experimental data with the predicted results from the reaction kinetic model.
REACTION CHEMISTRY & ENGINEERING
(2022)
Article
Engineering, Chemical
Dario Fernando Martinez-Martinez, Juan Jose Beltran-Morales, Mario Andres Noriega-Valencia, Paulo Cesar Narvaez-Rincon
Summary: In this study, the self-catalyzed kinetics for producing glycerol, diglycerol, and polyglycerol-4 maleate esters were experimentally determined across a temperature range of 60 oC to 80 degrees C. These esters are important intermediates for partially bio-based admixtures that can replace petroleum-derived polycarboxylate ethers in concrete superplasticizers. The experimental data were used to adjust the kinetic model parameters, including the temperature effect, and the model accurately predicted the behavior of the three reactions.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Engineering, Chemical
E. Adrover, D. Boldrini, N. J. Divins, A. Casanovas, G. Tonetto, E. Lopez, J. Llorca
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
(2016)
Article
Acoustics
Deborath Reinoso, Maria Adrover, Marisa Pedernera
ULTRASONICS SONOCHEMISTRY
(2018)
Article
Energy & Fuels
D. E. Boldrini
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2018)
Article
Thermodynamics
Mariana S. Alvarez Serafini, Deborath M. Reinoso, Gabriela M. Tonetto
Article
Chemistry, Multidisciplinary
Diego E. Boldrini, Sabrina Angeletti, Patricia M. Cervellini, Deborath M. Reinoso
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Engineering, Chemical
Deborath M. Reinoso, Sabrina Angeletti, Patricia M. Cervellini, Diego E. Boldrini
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
D. M. Reinoso, U. Diaz, M. A. Frechero
MATERIALS TODAY CHEMISTRY
(2019)
Article
Biotechnology & Applied Microbiology
Ana Gutierrez-Lazaro, Daniel Velasco, Diego E. Boldrini, Pedro Yustos, Jesus Esteban, Miguel Ladero
FERMENTATION-BASEL
(2018)
Article
Engineering, Environmental
D. Mariana Reinoso, G. Marta Tonetto
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2018)
Article
Engineering, Chemical
D. E. Boldrini, M. J. Yanez, G. M. Tonetto
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2017)
Article
Engineering, Chemical
Jose A. Santander, Diego E. Boldrini, Marisa N. Pedernera, Gabriela M. Tonetto
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2017)
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.