Article
Engineering, Environmental
Yunwu Zheng, Donghua Li, Tao Pei, Jida Wang, Can Liu, Yi Lu, Xu Lin, Jirong Li, Zhifeng Zheng
Summary: The thermocatalytic co-pyrolysis using CeZrAl and HZSM-5 dual catalyst significantly increased the hydrocarbon and aromatic hydrocarbon content, promoting the formation of aromatic hydrocarbons and polyaromatic hydrocarbons under certain proportions. The optimal reaction conditions were observed at 500/550 degrees Celsius, with a 1:2 ratio of CeZrAl to HZSM-5 and biomass to LDPE ratio.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Analytical
Dongxue Yu, Helong Hui, Guangchao Ding, Ning Dong, Songgeng Li
Summary: The two-step catalytic co-pyrolysis of walnut shell and low-density polyethylene using HZSM-5 catalyst showed significantly higher oil production, reduced gas and solid yields, and increased aromatic compound yield compared to conventional one-step approach. Characterization techniques revealed enhanced synergy between walnut shell and LDPE, with interactions of cellulose, hemicellulose, and lignin with LDPE identified. Possible mechanisms explaining the enhanced synergistic effects of the two-step approach were proposed.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
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
Energy & Fuels
Kai Sun, Wanli Wang, Nickolas J. Themelis, A. C. Thanos Bourtsalas, Qunxing Huang
Summary: The co-pyrolysis of PC and PE/PP in the presence of HZSM-5 catalyst without external hydrogen addition was studied to promote deoxygenation and aromatic hydrocarbon formation. Increasing the blending ratio of PE/PP resulted in a higher yield of gas phase products and decreased yields of oil phase, coke, and solid products. Catalyst regeneration reduced acidity but showed slight decrease in deoxygenation and aromatization effects.
Article
Engineering, Environmental
Kumar Raja Vanapalli, Jayanta Bhattacharya, Biswajit Samal, Subhash Chandra, Isha Medha, Brajesh K. Dubey
Summary: The co-pyrolysis of single-use low density polyethylene (LDPE) and Eucalyptus biomass (EuBm) can produce viable byproducts, the physicochemical characteristics of the LDPE-EuBm char composites can be optimized by adjusting temperature, residence time, and LDPE proportion. This study showed that optimal process parameters can enhance nutrient extractability and improve soil fertility index when applying the char to soil.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Green & Sustainable Science & Technology
Arun K. Vuppaladadiyam, Elsa Antunes, Paula Blanco Sanchez, Hubao Duan, Ming Zhao
Summary: The synergistic influence of microalgae on the co-pyrolysis of biomass wastes and its digested form was evaluated in terms of thermal decomposition behavior, gas yields, extent of thermal decomposition, and reaction kinetics. Microalgae were found to have a significant impact on reaction kinetics, reducing the apparent activation energy and increasing total gas yields, thus aiding in the design and optimization of co-pyrolysis processes.
Article
Engineering, Environmental
Hamad Gohar, Asif Hussain Khoja, Abeera Ayaz Ansari, Salman Raza Naqvi, Rabia Liaquat, Muhammad Hassan, Khalil Hasni, Umair Yaqoob Qazi, Imtiaz Ali
Summary: This study investigates the potential of integrating biomass into existing thermochemical conversion processes through the co-pyrolysis of coal-biomass blends. The results show that coal-sawdust blends are suitable for bio-oil production, while coal-hemp blends are better suited for biochar production. Additionally, hemp biochar shows potential in environmental and energy applications.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Thermodynamics
Xuanjun Jin, Jae Hoon Lee, Joon Weon Choi
Summary: The study found that co-pyrolysis of pine and PE significantly reduced oxygen content and increased product HHV. A higher plastic ratio resulted in more wax production, affecting condensation performance in bio-oil capture. A pinewood sawdust to PE ratio of 3:1 yielded the highest petrochemicals and least wax formation.
Article
Environmental Sciences
Jinyu Hou, Daoxu Zhong, Wuxing Liu
Summary: This study investigates the catalytic co-pyrolysis of hazardous oil sludge and waste biomass to produce renewable chemicals. The results show that ZSM-5 catalyst promotes the degradation and aromatization reactions, resulting in increased yields of aromatics and selectivity to BTX. This novel method allows for the high-value utilization of hazardous waste while reducing environmental pollution.
Article
Chemistry, Analytical
Mengge Wu, Zhiwei Wang, Gaofeng Chen, Mengju Zhang, Xiaofei Xin, Huina Zhu, Qun Wang, Zhimin Du, Yan Chen, Shuaihua Guo, Tingzhou Lei
Summary: The thermal conversion of organic solid waste is an economical method to obtain monocyclic aromatic hydrocarbon. This study investigated the effect of temperature, blend ratio, and reaction time on the content of monocyclic aromatic hydrocarbon during the co-pyrolysis of biomass and plastics. The optimal experimental conditions were determined to be temperature 600°C, blend ratio 1:3, and reaction time 10 seconds. The simulated, theoretical, and experimental content of monocyclic aromatic hydrocarbon were within a reasonable range.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
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
Muhammad Sajjad Ahmad, Jiri Jaromir Klemes, Hesham Alhumade, Ali Elkamel, Abid Mahmood, Boxiong Shen, Muhammad Ibrahim, Ahmad Mukhtar, Sidra Saqib, Saira Asif, Awais Bokhari
Summary: The study evaluated the feasibility of using Maple Leaf Waste (MLW) to produce biofuel-bioenergy and chemicals for the first time. By analyzing different degradation stages and temperatures, it was determined that the pyrolysis temperature range for maximum bioenergy production is from 200 degrees C to 430 degrees C. The findings show that MLW has significant potential for bioenergy production and is suitable for co-pyrolysis with other waste and biomass feedstock.
Article
Energy & Fuels
Weimin Wang, Guanqun Luo, Yuan Zhao, Yuanjun Tang, Kaige Wang, Xuan Li, Yousheng Xu
Summary: This study evaluated the kinetic and thermodynamic parameters of non-catalytic and catalytic co-pyrolysis of pine wood and HDPE, using Fraser-Suzuki function for deconvolution. The presence of catalyst HZSM-5 decreased activation energy and preexponential factor and affected reaction mechanisms of each component.
Article
Energy & Fuels
Zhitong Yao, Di Cai, Xinyang Chen, Yuhang Sun, Meiqing Jin, Wei Qi, Jiamin Ding
Summary: The co-pyrolysis of rice husk and epoxy resin was studied to improve tar production, revealing kinetic compensation effects between the two materials. The study identified three stages of decomposition and calculated activation energies using various methods, suggesting a potential mechanism for the co-pyrolysis process and proposing a model for collaborative disposal of multisource solid waste.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Analytical
Guanqun Luo, Weimin Wang, Wen Xie, Yuanjun Tang, Yousheng Xu, Kaige Wang
Summary: Co-pyrolysis of biomass with waste tire can improve bio-oil quality and mitigate environmental issues. Positive synergistic effects were observed in this study when corn stover and waste tire were co-pyrolyzed. Kinetics analysis revealed the activation energy of each pseudo-component, and the reaction mechanism was determined. The results provide valuable information for scale-up of the co-pyrolysis process.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Analytical
Wenbin Li, Yongfeng Zhu, Jinlei Chen, Yi Lu, Shuirong Li, Yunwu Zheng, Dechao Wang, Zhifeng Zheng
Summary: The study showed that Pt-Re/AC catalyst had higher selectivity for bio-furans and bio-phenols at low temperature, and 1Pt-3Re/AC exhibited good reusability.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Nanoscience & Nanotechnology
Binchang Hua, Huifang Kang, Jingyan Zhong, Xiaoling Zhan, Lanqing Xu, Jiaxin Li, Yongping Zheng, Zhifeng Zheng
Summary: The GDY/EG composite materials show excellent electrochemical performance and stability, demonstrating high reversible capacity and outstanding rate capability in lithium-ion batteries. The composite structure of graphdiyne and graphene facilitates electron transport and reduces aggregation polarization, leading to a more uniform interface film.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Agricultural Engineering
Jinlei Chen, Yongfeng Zhu, Wenbin Li, Fenqiang Luo, Shuirong Li, Xingyong Li, Yuanbo Huang, Aihua Zhang, Zhihong Xiao, Dechao Wang, Zhifeng Zheng
Summary: Hydrodeoxygenation of lipids is studied with NiO/TS-1 and Ni/TS-1 catalysts for the production of diesel-like hydrocarbons. The catalytic performance is affected by the valence of the active component Ni, with Ni/TS-1 showing better performance in terms of palmitic acid conversion and alkanes selectivity. Under optimal conditions, Ni/TS-1 achieved 100% palmitic acid conversion and 91.6% pentadecane selectivity.
BIOMASS & BIOENERGY
(2021)
Article
Chemistry, Multidisciplinary
Qian Liu, Xinyu Yang, Dipan Xuan, Zhe Lu, Fenqiang Luo, Shuirong Li, Yueyuan Ye, Duo Wang, Cunbiao Miao, Zhun Liu, Dechao Wang, Zhifeng Zheng
Summary: The pyrolysis behavior of pure PAN precursor and PAN precursor modified by transition metals Co and Fe was studied, and the effects of metal salts addition, pyrolysis temperature, and peroxidation on the formation of pyrolysis products were analyzed via Py-GC/MS. The results showed a change in the formation of pyrolysis products with the addition of Co and Fe.
Article
Chemistry, Physical
Yunwu Zheng, Jida Wang, Donghua Li, Can Liu, Yi Lu, Xu Lin, Zhifeng Zheng
Summary: Catalytic pyrolysis is an effective method for converting biomass into value-added chemicals, but developing cost-effective catalysts remains a challenge. A highly efficient bimetallic Pt-Ni catalyst was fabricated for upgrading biomass into hydrocarbon-rich bio-oil. The addition of Pt improved the interaction between NiO and alumina, enhancing nickel dispersion and promoting C=O hydrogenation. The Pt-Ni/Al = 1:2 catalyst showed excellent catalytic performance, achieving highest peak areas of desired hydrocarbons and aromatic hydrocarbons.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Analytical
Dechao Wang, Yongfeng Zhu, Jinlei Chen, Wenbin Li, Fenqiang Luo, Shuirong Li, Wei Xie, Jiangsheng Liu, Hongqiao Lan, Zhifeng Zheng
Summary: Catalytic fast pyrolysis of lignocellulosic biomass over ZSM-5 was studied, showing that ZSM-5 facilitated the production of aromatic hydrocarbons and olefins while decreasing total acid and various acid contents.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Analytical
Yunwu Zheng, Jida Wang, Donghua Li, Can Liu, Yi Lu, Xu Lin, Zhifeng Zheng
Summary: A high-performance hierarchical porous carbon enriched in oxygen-containing functional groups was prepared using pine as the raw material, KOH and KMnO4 as activators. The two-step process and higher activation to biomass ratio led to excellent adsorption performance. Adsorption mechanisms differ between KOH and KMnO4 activation due to differences in chemical structures and functional groups present on the biochar surface.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Agricultural Engineering
Xin Cai, Zhaoxia Zhang, Yueyuan Ye, Duo Wang, Shuirong Li, Dechao Wang, Zhifeng Zheng
Summary: The use of acid addition method improves the conversion of fatty acids and esters into long-chain alkanes under mild hydrothermal conditions, simplifies the reaction system, expands the range of applicable raw materials, and maintains excellent catalytic activity.
BIOMASS & BIOENERGY
(2022)
Article
Electrochemistry
Qian Liu, Zhuang Wang, Jie Liu, Zhe Lu, Dipan Xuan, Fenqiang Luo, Shuirong Li, Yueyuan Ye, Duo Wang, Dechao Wang, Zhifeng Zheng
Summary: CoFe2O4 composite carbon nanofibers (CoFe2O4@CNFs) were prepared by electrospinning combined with pre-oxidation, carbonization, and extra annealing under air conditions. The resulting CoFe2O4@CNFs showed excellent capacitive characteristics, with a specific capacity of 591.8 F g(-1) at a current density of 1 A g(-1), and a high energy density of 21.4 Wh kg(-1) at a power density of 850 W kg(-1) after 7000 cycles. The asymmetric supercapacitor assembled by CoFe2O4@CNFs with activated carbon (AC) exhibited a capacitance retention rate of 87% in the 0-1.7 V voltage window.
Article
Energy & Fuels
Jinlei Chen, Dechao Wang, Fenqiang Luo, Xinyu Yang, Xingyong Li, Shuirong Li, Yueyuan Ye, Duo Wang, Zhifeng Zheng
Summary: This study reports on the selective production of alkanes and higher fatty alcohols through hydrodeoxygenation (HDO) of palmitic acid over red mud-supported nickel catalysts (Ni/RM). The results show that 7%Ni/RM exhibits the best catalytic performance and demonstrates stable reuseability. Hexadecanol plays an important role in the routes of deoxygenation, decarbonylation, and decarboxylation.
Article
Chemistry, Physical
Lei Tao, Bingyuan Ma, Fenqiang Luo, Zhengrui Xu, Zhifeng Zheng, Haibo Huang, Peng Bai, Feng Lin
Summary: The conversion of single-sheet graphitic carbon papers to function-gradient Li/C composite anodes was achieved by controlling the thermal infiltration time, allowing for controllable formations of LiC6 and Li metal. The resulting composite anode with a unique gradient structure enables selective utilization of Li metal and LiC6 as the active component under different electrochemical conditions. This composite anode has a stable porous framework and abundant lithiophilic sites, providing uniform local electric field and stable Li metal deposition during cycling, leading to better long-term cycling stability and higher rate capability compared to traditional Li foil anodes.
Article
Biochemistry & Molecular Biology
Shijiao Qin, Yujia Wu, Hao Tian, Yun Liu, Huan Kan, Defa Hou, Xu Lin, Yunwu Zheng, Zhifeng Zheng, Can Liu
Summary: This paper introduces a modified starch film with pH response characteristics, which can be used for real-time monitoring of the safety of liquid foodstuffs, especially for juice quality monitoring.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Jie Liu, Dipan Xuan, Zhe Lu, Zhuang Wang, Qian Liu, Shuirong Li, Duo Wang, Yueyuan Ye, Dechao Wang, Zhifeng Zheng
Summary: This study investigates the interfacial interactions between carbon materials and PPy by forming novel freestanding composite electrodes via depositing PPy on the surface of carbon foam. The results show that the introduction of different oxygen-containing functional groups affects the cycling stability of composite materials. Furthermore, intermolecular interactions also impact the redox properties of composite electrodes.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Yongfeng Zhu, Qian Liu, Xinyu Yang, Jiacheng Wang, Shuirong Li, Duo Wang, Yuanyuan Ye, Dechao Wang, Zhifeng Zheng
Summary: The research focused on converting vapors from cellulose pyrolysis into alkanes without additional hydrogen source, with a high selectivity and yield achieved under optimal reaction conditions. It was found that the Au/TS-1 catalyst played a key role in promoting the formation of LCAs, with alcohol functional groups also contributing to the process.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Energy & Fuels
Wenbin Li, Jida Wang, Zhen Wang, Jie Chen, Xiaoan Nie, Zhangshuai Ding, Dechao Wang, Zhifeng Zheng, Yunwu Zheng, Jianchun Jiang
Summary: Pt-Sn-Ce/gamma-Al2O3 catalysts synthesized by impregnation method showed good performance in producing aromatic hydrocarbons-rich bio-oil via catalytic fast pyrolysis of cellulose. They effectively improved the relative content of aromatic hydrocarbons in bio-oil and generated high levels of monocyclic aromatic hydrocarbons.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Chemistry, Analytical
Guanshuai Zhang, Shanjian Liu, Dongmei Bi, Zhisen He, Jia Liu, Yinjiao Liu
Summary: Hydrogen peroxide pretreatment was applied for fast pyrolysis of corn stalks, and it was found that the pretreatment effectively promoted lignin depolymerization and decreased the reaction activation energy. The pretreatment also increased the cellulose content and removed alkali and alkaline earth metals from the biomass. The pH of the hydrogen peroxide solution affected the removal of lignin and ash by the pretreatment, and the composition of bio-oil changed significantly, with a significant increase in the relative content of levoglucosan after pretreatment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2024)