Article
Energy & Fuels
Yao Wang, Bin Li, Anjiang Gao, Kuan Ding, Xie Xing, Juntao Wei, Yong Huang, Jason Chun -Ho Lam, K. A. Subramanian, Shu Zhang
Summary: The aim of this study was to investigate the impact of acid-washing pretreatment on the pyrolysis of poplar wood under different volatile-char interactions. The experiment was performed using a self-designed fixed-bed pyrolysis reactor. It was observed that acid-washing pretreatment altered the surface morphology of the poplar wood, increasing cellulose crystallinity and reducing inorganic ash components. These components, mainly Alkali and Alkaline Earth Metal species, acted as catalysts for sugar ring fragmentation and charring reactions during both primary pyrolysis and secondary volatile-char interactions. The removal of these components resulted in an increase in bio-oil yield and a decrease in biochar and non-condensable gas yields, while also promoting the generation of pore structures in the biochar and enhancing anhydrosugars content in the bio-oil.
Article
Environmental Sciences
Meng Ma, Yonghui Bai, Jiaofei Wang, Peng Lv, Xudong Song, Weiguang Su, Guangsuo Yu
Summary: Leaching treatment of cow manure with different solvents can enhance the maximum weight loss rate and peak temperature of hemicellulose and cellulose, promote the release of volatile compounds, effectively remove AAEMs, increase the specific surface area and pore volume, and reduce the crystallinity and crystal size of cellulose.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Analytical
Yuan Xue, Shuyu Zhou, Erwei Leng, Cunhao Cui, Zhongyue Zhou, Yunfeng Peng
Summary: Wet torrefaction (WT) has the potential to convert moist biomass into hydrophobic fuel with higher heating value and energy density. The combination of wet torrefaction and pyrolysis allows for comprehensive utilization of biomass. Torrefied liquid is promising for furfural and organic acid production, while torrefied solid products have improved properties and enhanced removal of AAEMs.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Agricultural Engineering
Hongliang Sun, Dongdong Feng, Shaozeng Sun, Yijun Zhao, Linyao Zhang, Guozhang Chang, Qingjie Guo, Jiangquan Wu, Yukun Qin
Summary: This paper investigates the effect of alkali and alkaline earth metallic species on the thermal conversion of corn straw. The results show that K/Ca loading promotes the conversion of certain chemical groups in corn straw, especially K element has a strong influence. It helps reduce CH4 and CO emissions and promote CO2 release during pyrolysis.
BIOMASS & BIOENERGY
(2022)
Article
Energy & Fuels
Shuo Zhang, Yunfei Wu, Yiming Wang, Mei Zhong, Guijin Wang, Yanpeng Ban, Shun Zhao, Haoquan Hu, Lijun Jin
Summary: This study applied a CO2-enhanced water leaching method to remove alkali/alkaline earth metallic species from biochar and used the demineralized biochar as a catalyst for upgrading pyrolysis biooil. The results showed that the pore structure of the catalyst played a dominant role in increasing phenols contents, while alkali/alkaline earth metallic species enhanced the polymerization of aromatic hydrocarbons and the decarbonylation of oxygenated compounds.
Article
Chemistry, Applied
Liqun Ma, Syed Shatir A. Syed-Hassan, Junbo Zhou, Wei Deng, Yimin Xiong, Xuepeng Wang, Xun Hu, Jun Xu, Long Jiang, Sheng Su, Song Hu, Yi Wang, Jun Xiang
Summary: Stable free radicals are long-lived macromolecule radicals formed in pyrolysis and play a crucial role in biochar formation. The presence of alkali and alkaline earth metals (AAEMs) in biomass can affect the reactions of stable free radicals during pyrolysis. This study used in-situ electron paramagnetic resonance (EPR) spectroscopy to analyze the effect of AAEMs on stable free radicals in cocoanut pyrolysis, and found that AAEMs enhanced the activity of stable free radicals and promoted radical-radical coupling.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Agricultural Engineering
Douglas Hungwe, Saleem Ullah, Petri Kilpelainen, Sarut Theppitak, Lu Ding, Fumitake Takahashi
Summary: The study found that consecutive hydrothermal treatment and water washing of coconut fibers can effectively remove water-soluble and exchangeable potassium. This pretreatment approach can produce bio-oils that are inorganic-free, thermally stable, and chemically stable.
BIOMASS & BIOENERGY
(2021)
Article
Green & Sustainable Science & Technology
Bin Li, Huimin Huang, Xing Xie, Juntao Wei, Shu Zhang, Xun Hu, Shihong Zhang, Dongjing Liu
Summary: The effects of AAEMs removal and KOH addition in char on formation and distribution of wheat straw pyrolysis products were studied. The removal of AAEMs increased the interaction between volatiles and char, while the addition of KOH significantly reduced bio-oil yield and increased non-condensable gas yield. It also promoted specific reactions and enhanced the cracking/decomposition of certain compounds.
Article
Energy & Fuels
Hong Tian, Yangyue Wei, Shan Cheng, Zhangjun Huang, Mengxia Qing, Yingquan Chen, Haiping Yang, Yang Yang
Summary: The study found that high lignin content is favorable for improving the reactivity of biochar, and the activity of xylan biochar is affected by the content of alkali and alkaline earth metals, while the activity of cellulose biochar is influenced by the porous structure.
Article
Chemistry, Physical
Hongliang Sun, Dongdong Feng, Yu Zhang, Shaozeng Sun, Yijun Zhao, Feng Zhang
Summary: This paper investigates the coke accumulation characteristics in catalytic tar reforming using different K and Ca-loaded biochar catalysts. The results indicate that K-loaded biochar exhibits a higher tar conversion capacity, while H-form biochar has a lower tar removal efficiency. The loading of K/Ca affects the growth structure of the coke, with K-loaded biochar retaining a higher micropore area and experiencing a smaller increase in average pore size. Furthermore, the loading of K promotes the dehydrogenation of tar components, while only K catalyzes the deoxygenation of tar components. These findings are important for improving the efficiency and selectivity of tar reforming.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Saartjie M. Gouws, Marion Carrier, John R. Bunt, Hein W. J. P. Neomagus
Summary: Accurate prediction of the yield and composition of pyrolysis products is crucial for the design and operation of pyrolysis reactors and gasifiers. A new semi-global kinetic reaction scheme was proposed in this study to predict the composition of pyrolytic volatiles from raw and torrefied biomass. The model showed satisfactory results in predicting product distribution trends for changes in lignocellulosic composition, heating rate, and pressure.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
L. Florentino-Madiedo, M. F. Vega, E. Diaz-Faes, C. Barriocanal
Summary: The pyrolysis of coal, torrefied sawdust, paraffin, and their blends was evaluated using various methods to determine activation energy, reaction mechanism, and thermodynamic parameters. The SPT/P blend showed significant synergy, changing the reaction mechanism and increasing the activation energy.
Article
Agricultural Engineering
Pan Li, Xiaopeng Shi, Luyao Jiang, Xianhua Wang, Jiande Song, Shuqi Fang, Jing Bai, Chun Chang, Shusheng Pang
Summary: The study found that acid pretreatment and catalytic pyrolysis can improve the yield of aromatics in bio-oil, with the most significant effect observed at 600 degrees Celsius. Synergy effect facilitated the conversion of pyrolytic intermediates to gas and aromatics.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Energy & Fuels
Hong Tian, Jiang Zhu, Yang Yang, Shan Cheng, Yanshan Yin, Fuqiang Qin, Lei Liu
Summary: The effects of alkali metals (KCl, NaCl) and alkaline earth metals (CaO, MgCl2) on the evolution of nitrogen-containing compounds and product distribution during the pyrolysis of phenylalanine were investigated. TG-IR was used to track the changes in nitrogen-containing gases (NH3, HCN, HNCO) with temperature and their final release amounts. The pyrolysis reaction paths of phenylalanine were simulated using the M06-2X method and 6-31g(d) basis set, and the influence mechanism of AAEMs on the evolution process of nitrogen-containing compounds was explored at the molecular level. The results showed that KCl promoted the release of HCN and HNCO while inhibiting the release of NH3, whereas NaCl inhibited the production of NH3 and HCN and promoted the production of HNCO. Both CaO and MgCl2 promoted the release of HCN and NH3 and inhibited the release of HNCO, with MgCl2 having a minor effect on HNCO. Theoretical simulations revealed that the competitive effect of AAEMs on the formation paths of aromatic nitrogen compounds was the main reason for the overall change in the three nitrogen-containing gases.
Article
Environmental Sciences
Chen Cheng, Qing He, Tamer M. Ismail, Alexander Mosqueda, Lu Ding, Junqin Yu, Guangsuo Yu
Summary: Hydrothermal carbonization improves the biomass quality and energy yield of rape straw. The properties of hydrochars produced at different temperatures and residence times were investigated. The results showed that increasing temperature had a more significant effect on hydrochar properties than residence time. The hydrochar structure was changed and became more stable after the aromatization reaction. The gasification reactivity of hydrochar was also affected, with the peak of pyrolysis and gasification shifting to a higher temperature region. Furthermore, hydrothermal carbonization efficiently reduced the content of alkali and alkaline earth metals, with the best removal condition observed at 200°C.
Article
Energy & Fuels
Yuan Xue, Shuai Zhou, Robert C. Brown, Atul Kelkar, Xianglan Bai
Article
Agricultural Engineering
Wangda Qu, Yuan Xue, Yiwei Gao, Marjorie Rover, Xianglan Bai
BIOMASS & BIOENERGY
(2016)
Article
Thermodynamics
Guangyi Liu, Mark M. Wright, Qingliang Zhao, Robert C. Brown, Kaige Wang, Yuan Xue
ENERGY CONVERSION AND MANAGEMENT
(2016)
Article
Energy & Fuels
Yuan Xue, Atul Kelkar, Xianglan Bai
Article
Chemistry, Multidisciplinary
Yuan Xue, Shuai Zhou, Xianglan Bai
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2016)
Article
Chemistry, Multidisciplinary
Shuai Zhou, Yuan Xue, Ashokkumar Sharma, Xianglan Bai
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2016)
Article
Thermodynamics
Yuan Xue, Patrick Johnston, Xianglan Bai
ENERGY CONVERSION AND MANAGEMENT
(2017)
Article
Polymer Science
Wangda Qu, Jing Liu, Yuan Xue, Xinwei Wang, Xianglan Bai
JOURNAL OF APPLIED POLYMER SCIENCE
(2018)
Article
Chemistry, Multidisciplinary
Wenqi Li, Shuai Zhou, Yuan Xue, Young-Jin Lee, Ryan Smith, Xianglan Bai
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2017)
Article
Thermodynamics
Yuan Xue, Xianglan Bai
ENERGY CONVERSION AND MANAGEMENT
(2018)
Article
Chemistry, Analytical
Yuan Xue, Ashokkumar Sharma, Jiajie Huo, Wangda Qu, Xianglan Bai
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2020)
Review
Energy & Fuels
Erwei Leng, Yilin Guo, Jingwei Chen, Shuai Liu, Jiaqiang E, Yuan Xue
Summary: This paper comprehensively reviews the pyrolysis of lignin, including mechanism, modeling, and the effects of inorganic species. It discusses the pyrolysis characteristics, depolymerization mechanism, and different types of models used, as well as the influences of alkali metals, alkaline earth metals, and transition metals on lignin pyrolysis. Challenges and prospects are also discussed in the last section of the article.
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)