Article
Engineering, Environmental
Tim Croes, Abhishek Dutta, Robin De Bie, Korneel Van Aelst, Bert Sels, Bart Van der Bruggen
Summary: Organic solvent nanofiltration membranes were used to fractionate birch derived RCF lignin oil. The silicon-based membranes from Borsig and Evonik showed the best performance in separating lignin into different functional fractions, with monomer separation factors up to 7.4 and a permeate fraction with 88% phenolic monomer purity. Furthermore, batch diafiltration and two-stage filtration increased the separation factor to 25.4 and the monomer purity of the permeate to 95%.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agricultural Engineering
Dong-Can Lv, Kun Jiang, Kai Li, Yun-Quan Liu, Duo Wang, Yue-Yuan Ye
Summary: Hydrotreatment of pyrolysis oils with lignin-derived oil as a co-feed can effectively inhibit coke formation and improve oil stability. Controlling the temperature is essential for obtaining upgraded bio-oils with higher quality and better stability.
BIOMASS & BIOENERGY
(2022)
Article
Thermodynamics
Dengyu Chen, Kehui Cen, Xiaozhuang Zhuang, Ziyu Gan, Jianbin Zhou, Yimeng Zhang, Hong Zhang
Summary: This study investigated the pyrolysis behavior and product of the three major components of biomass. The results showed that their characteristics and thermal stability were related to their unique chemical structures. Different volatiles were generated during pyrolysis, and the thermal decomposition pathways of cellulose, hemicellulose, and lignin were proposed.
COMBUSTION AND FLAME
(2022)
Article
Engineering, Chemical
Guangce Jiang, Dongcan Lv, Fengjiao Zhang, Aimin Ning, Guangqin Gao, Yunlai Ren, Zhimin Wang
Summary: This study presents an economical and feasible strategy for efficiently extracting monophenols from bio-oil by using Hansen solubility parameter theory to predict dissolution trends. A multistep extraction process with high mono phenol yield and selectivity was established, showing potential for practical application in bio-oil separation and refinement.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Jiubing Zhang, Yuanyuan Ge, Songyuan Xiong, Zhili Li
Summary: A new economical, stable, and recyclable amorphous mesopomus geopolymer monolith (GM) prepared from metakaolin and slag exhibited higher activity than other catalysts in depolymerizing polymers into monophenols.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Wenbing Yu, Chongbo Cheng, Dekui Shen, Sai Gu, Kai Hong Luo
Summary: This study successfully obtained high-value chemicals from lignin using a nickel-based catalyst. The Ni5Zn5AlOx catalyst with optimal surface properties and strong acidic sites yielded the highest monophenol production. The ratio of Ni/Zn also played a role in lignin depolymerization, with the Ni3Zn7AlOx catalyst achieving the highest monomeric compound yield.
Article
Energy & Fuels
Ziyu Jia, Jun Hu, Ping Lu, Yahui Sun, Yunjun Wang
Summary: In this study, Ru/C and H2WO4 catalysts were used to efficiently depolymerize native lignin in biomass into monophenols through the lignin-first strategy under mild conditions. The co-presence of Ru/C and H2WO4 resulted in a 40.4 wt% yield of monophenols from birch lignin at 200 degrees C, which was 2.5 times higher than that achieved with Ru/C alone and 7.5 times higher than that achieved with H2WO4 alone. The major products were 4-propylsyringol and 4-propylguaiacol, with a combined selectivity of 73%. Analysis of the liquid product using 2D HSQC NMR revealed thorough disruption of β-O-4 bonds in the soluble lignin fragments. The solvolysis of lignin from the biomass matrix was promoted by H2WO4 dissolution at high temperatures, while Ru/C enhanced the subsequent reductive depolymerization. The solid catalysts could be easily recovered for reuse after the hydrolysis of carbohydrates at room temperature, and they remained highly active after four recycling steps.
Article
Chemistry, Multidisciplinary
Weixiang Guan, Xiao Chen, Chi Wing Tsang, Haoquan Hu, Changhai Liang
Summary: This study investigates the catalytic performance of Rh/Nb2O5 catalysts in the hydrodeoxygenation of lignin monophenol compound, achieving high efficiency in converting lignocellulosic biomass into valuable aromatic compounds under low hydrogen pressure. Particularly, the Rh/Nb2O5-400 catalyst shows exceptional selectivity and yield in producing aromatics from lignin oil as the substrate.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Energy & Fuels
Ruihan Dong, Fangjun Chen, Fengxia Zhang, Shiliang Yang, Huili Liu, Hua Wang, Jianhang Hu
Summary: This study comprehensively investigated the pyrolysis kinetics of jatropha oil, revealing its potential as bioenergy. The research findings provide insights for the operation and optimization of pyrolysis reactors.
Article
Chemistry, Applied
Jiapeng Liu, Lingyu Zhao, Zhenyu Liu, Qingya Liu
Summary: The liquefaction of alkaline lignin in three hydrogen donor solvents was studied, and it was found that 9,10-dihydroanthracene (DHA) was more effective in promoting the formation of monophenols compared to 9,10-dihydrophenanthrene (DHP) and 1,2,3,4-tetrahydrocarbazole (THCA). The results indicate that the hydrogen donor solvents significantly enhance the liquefaction of lignin and the formation of monophenols, and the liquid products and phenols are formed through two routes. The optimal reaction conditions were determined to be 400 degrees C for 1-2 minutes or 350 degrees C for 8-10 minutes with a monophenols yield of 10.3-10.7%.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Environmental
Qingqi Zheng, Dequan Zhang, Peng Fu, Aixia Wang, Yongmei Sun, Zhiyu Li, Qingwen Fan
Summary: Understanding the role of volatile evolving, char structural evolution, and pyrolysis reaction pathway is crucial for effective utilization of lignin through a pyrolysis-based biorefinery approach. Fast pyrolysis of lignin at different temperatures revealed the release characteristics of volatile compounds and their connection with char structure evolution. The results showed that the release of simple substituted aryl compounds was promoted by the cleavage of beta-O-4 and alpha-O-4. The study also found that high temperatures contributed to the formation of aromatic monomers, and the aromaticity can be evaluated based on the atom ratio of H/C and the degree of ring condensation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Agricultural Engineering
Silawan Sangthong, Worasak Phetwarotai, Muhammad Saifullah Abu Bakar, Benjamas Cheirsilp, Neeranuch Phusunti
Summary: This study comparatively analyzed the potential of palm kernel shell and its isolated lignin for the production of phenol and phenolic compounds via the pyrolysis process. The experimental results showed that the isolated lignin had a higher bio-oil yield and total fraction of phenol and phenolic compounds.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Energy & Fuels
Liang Li, Ruben Van de Vijver, Andreas Eschenbacher, Onur Dogu, Kevin M. Van Geem
Summary: This study investigated the decomposition of three hydroxycinnamaldehyde model compounds and found that the presence of methoxy groups on the aromatic rings accelerates the decomposition of hydroxycinnamaldehydes. The research also highlighted the importance of considering these structural differences when predicting the decomposition of real lignocellulosic biomass.
Article
Chemistry, Analytical
Homer C. Genuino, Ludovico Contucci, Jessi Osorio Velasco, Balaji Sridharan, Erwin Wilbers, Okan Akin, Josef G. M. Winkelman, Robertus H. Venderbosch, Hero J. Heeres
Summary: This study investigated the pyrolysis of LignoBoost lignin in a molten salt solution and found that the presence of salt had a positive influence on the liquid phase yields and composition, with higher levels of depolymerization and selectivity to aromatic and phenolic monomers.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Multidisciplinary
Sohaib Haseeb, Jesse R. Vanderveen, Devni Elamaldeniya, Jesse Harris, Kyle J. Boniface, Roland Lee, Pascale Champagne, Philip G. Jessop
Summary: The mixture of cyclohexyl methyl ethers prepared from Kraft lignin pyrolysis oil is a biomass-derived aliphatic solvent that is slightly more basic and polar compared to cyclopentyl methyl ether. Despite 12 weeks of exposure to air, neither the biomass-derived solvent nor pure cyclohexyl methyl ether formed any detectable peroxides, making it a potential replacement for THF and other solvents such as dioxane, ethyl acetate, acetone, and 2-butanone.
Article
Chemistry, Applied
Weikun Jiang, Jiangyong Chu, Shubin Wu, Lucian A. Lucia
FUEL PROCESSING TECHNOLOGY
(2017)
Article
Energy & Fuels
Wei Weiqi, Wu Shubin
Article
Chemistry, Applied
Weikun Jiang, Jiangyong Chu, Shubin Wu, Lucian A. Lucia
FUEL PROCESSING TECHNOLOGY
(2018)
Article
Green & Sustainable Science & Technology
Hongyou Yuan, Shubin Wu, Xiuli Yin, Yanqin Huang, Daliang Guo, Chuangzhi Wu
Article
Chemistry, Physical
Jiajin Liang, Jiao Chen, Shubin Wu, Chao Liu, Ming Lei
SUSTAINABLE ENERGY & FUELS
(2018)
Article
Agricultural Engineering
He Yang, Weiqi Wei, Shubin Wu, Junping Zhuang
INDUSTRIAL CROPS AND PRODUCTS
(2018)
Article
Chemistry, Analytical
Ming Lei, Shubin Wu, Jiajin Liang, Chao Liu
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2019)
Article
Agricultural Engineering
Zengyong Li, Ying Liu, Chuanfu Liu, Shubin Wu, Weiqi Wei
BIORESOURCE TECHNOLOGY
(2019)
Article
Energy & Fuels
Xiaohua Zhang, Hao Ma, Shubin Wu, Weikun Jiang, Weiqi Wei, Ming Lei
Article
Chemistry, Applied
Jiajin Liang, Jiao Chen, Shubin Wu, Chao Liu, Ming Lei
FUEL PROCESSING TECHNOLOGY
(2019)
Article
Thermodynamics
Tengfei Li, Hao Ma, Shubin Wu, Yihui Yin
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Thermodynamics
Xiaohua Zhang, Hao Ma, Tengfei Li, Shubin Wu
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Energy & Fuels
Xiaohua Zhang, Hao Ma, Shubin Wu
Article
Energy & Fuels
Sijia Chen, Hao Cheng, Shubin Wu
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.