Article
Thermodynamics
Yuanyuan Zhang, Peizhen Zhao, Fengling Yang
Summary: The thermal conversion characteristics of coal gangue, weathered coal, and pine sawdust in CO2/N-2 atmosphere were investigated, focusing on the reaction behavior of char and CO2. The results showed that all three materials had two main stages of thermal conversion, with pine sawdust having a shorter conversion time. Mass loss of coal gangue/pine sawdust blends had four overlapped peaks, while coal gangue/weathered coal mixtures had two separated peaks. The addition of weathered coal or pine sawdust improved the char-CO2 reactivity of coal gangue, but interactions were absent between coal gangue and weathered coal.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Jiawei Li, Subo Fan, Xuyang Zhang, Zhichao Chen, Yanyu Qiao, Zhenhua Yuan, Zhengqi Li
Summary: This study investigated the co-combustion of coal gasification fine ash (CGFA) and raw coal (RC), exploring its thermal conversion, synergistic behavior, kinetics, thermodynamics, and gas release behavior. The results demonstrated that adding RC to CGFA enhanced the combustion performance of CGFA and reduced the formation of polluting gases. This research contributes to the development of new energy strategies utilizing CGFA combustion.
Article
Green & Sustainable Science & Technology
Rui Diao, Shanshan Li, Jingjing Deng, Xifeng Zhu
Summary: This study investigated the co-gasification behaviors and synergistic interaction of bituminous coal and walnut shell under CO2 atmosphere. The results showed that the addition of walnut shell significantly enhanced the gasification reactivity of coal, and a high coal/biomass blend ratio induced the formation of amorphous carbons and further accelerated the co-gasification reaction.
Article
Agricultural Engineering
G. Grasa, I. Martinez, R. Murillo
Summary: Gasification kinetics of six chars from residual origin were studied under relatively low temperature, low CO2, and high H2O partial pressures. The Random Pore Model (RPM) showed the best fit to experimental results, but the selection of the reaction model depended on the ash composition, specifically the presence of alkali and alkaline earth metals. Chars with ash content higher than 30% wt. were modeled with the RPM model, while chars with the highest K/Si ratio required modified versions of the RPM to accurately predict reaction rates. Textural properties played a key role in determining reaction parameters, such as the pre-exponential factor and activation energy, for chars with similar ash content and composition.
BIOMASS & BIOENERGY
(2024)
Review
Energy & Fuels
Haiquan An, Zhen Liu, Xinhui Fang, Ziyang Feng, Xuelei Duan
Summary: This study investigated the CO2 gasification kinetics of direct coal liquefaction residue (ER), showing higher reactivity of ER char compared to coal char and an increase in reactivity with higher ER content in blends. The partial pressure of CO2 promoted the reactivity of all samples, and ER char exhibited larger BET surface area and pore volume compared to coal char. Activation energy and reaction order parameters for ER char, coal char, and their blend were also determined.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Mining & Mineral Processing
Tao Xu, Yongping Wu, Sankar Bhattacharya
Summary: The gasification kinetic modelling and prediction model for Victorian brown coal chars were found to be applicable in this study, with limited effect on gasification rate by particle size under 106μm. Maddingley char and Yallourn char showed differences in activation energies and pre-exponential factors during CO2 gasification.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2021)
Article
Thermodynamics
Jun Zhao, Hassan Nasir Mangi, Zhenyue Zhang, Ru'an Chi, Haochen Zhang, Mengyu Xian, Hong Liu, Haibin Zuo, Guangwei Wang, Zhigao Xu, Ming Wu
Summary: This study aimed to utilize low-rank coal and biomass residue in the coking process, and investigated the performance and structural characteristics of the prepared cokes. The results showed that modified coal could improve the quality and caking performance of coke, as well as enhance the gasification performance.
Article
Thermodynamics
Cui Wang, Linfeng Li, Yunan Chen, Zhiwei Ge, Hui Jin
Summary: In this study, gasification experiments of wheat straw in supercritical water were conducted to analyze the gasification properties. A kinetic model of wheat straw was established to guide the acceleration of gasification. The results showed that increasing reaction time enhanced gasification significantly, while temperature became the limiting factor for hydrogen yield.
Article
Energy & Fuels
Jianzheng Xu, Tao Song
Summary: This study conducted experiments and modeling on the CO2-gasification of rice husk char using a bed of red mud oxygen-carrier. The effects of oxygen carrier, temperature, and CO2 concentration were evaluated and modeled. The results showed that the red mud significantly enhanced the gasification of char. A model coupling the kinetics of char gasification and mass transfers within and surrounding the char was established and showed a good agreement with experimental results. The study also revealed the presence of mass transfer resistance within the char particle, which led to pore structure changes at a carbon conversion of about 0.3.
Article
Thermodynamics
Zihang Zhang, Baojun Yi, Zhengshuai Sun, Qi Zhang, He Feng, Hongyun Hu, Xiangguo Huang, Chunqing Zhao
Summary: During the operation of industrial gasifier, the concentrations of CO2 and H2O in gasification media vary with the change of stages, affecting the gasification process. Increasing H2O concentration can improve the reaction rate and conversion rate of coal char, especially in the early stage. The shrinking core model fits the gasification process of coal char better in a highly reactive 95% H2O/5% N-2 atmosphere.
Article
Chemistry, Multidisciplinary
Dan-lu Pan, Wei-ting Jiang, Rui-tang Guo, Yang Huang, Wei-guo Pan
Summary: The combustion characteristics of waste tire powders, bituminous coal, and their blends were studied using a thermogravimetric analyzer. An increase in heating rate led to higher combustion temperature of tire powders but reduced maximum weight loss rate. Blends of coal and tire powders exhibited characteristics similar to their individual components, indicating minimal interaction effects between the two materials.
Article
Energy & Fuels
Siqin Li, Hao Song, Junhao Hu, Haiping Yang, Jun Zou, Youjian Zhu, Ziyue Tang, Hanping Chen
Summary: The study found that straw biomass with higher cellulose and hemicellulose content, such as corn straw, wheat straw, and rice straw, exhibited higher pyrolysis reactivity. In the char gasification stage, the content of fixed carbon and catalytic ash components played a significant role in determining weight loss and reactivity, with corn straw, cotton straw, and soybean straw performing better in char gasification. Kinetics results showed that the homogeneous reaction model better described the pyrolysis stage, while the shrinking core model was more suitable for the char gasification stage in all straw biomass.
Article
Energy & Fuels
Maham Tauseef, Abeera Ayaz Ansari, Asif Hussain Khoja, Salman Raza Naqvi, Rabia Liaquat, William Nimmo, Syed Sheraz Daood
Summary: The in-depth thermodynamic and kinetic synergistic effects of coal and rice husk blends on co-pyrolysis for bioenergy production were investigated. The study determined the thermokinetic rate parameters for different reaction models and identified the prominent degradation temperature ranges for the co-pyrolysis reactions. The results showed that the increase of rice husk proportion in coal affected the activation energy and enthalpy values differently in different stages. The co-pyrolysis and co-gasification experiments revealed the potential applications of the obtained products, including honeycomb structure biochar samples and gas compositions.
Article
Thermodynamics
Bo Zhang, Meiqin Cui, Kaiwei Sun, Peng Fu, Ping Geng, Yan Zhang, Weiming Yi
Summary: In this paper, isothermal gasification experiments were conducted on coal and biomass to study the intrinsic reaction. The results verified the features of the intrinsic reaction and provided insights into external diffusion and bed diffusion. The study offers a simple method for judging and identifying intrinsic reactions, which is beneficial for understanding coal and biomass gasification kinetics.
THERMOCHIMICA ACTA
(2023)
Article
Thermodynamics
Bhoopendra Pandey, Pratik N. Sheth, Yogesh K. Prajapati
Summary: Using CO2 as a gasifying agent in biomass gasification can increase the CO content and heating value of the producer gas, but it reduces the average temperature in the gasifier.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Zhenghong Zhao, Zewu Zhang, Xiaojian Zha, Ge Gao, Xiaoshan Li, Fan Wu, Cong Luo, Liqi Zhang
Summary: In the MILD-oxy combustion process, the accumulation of H2O in the recycled flue gas, particularly under wet flue gas recirculation, has significant effects on combustion behavior and NOx emissions. Adding H2O reduces flame temperature and enhances radiative heat transfer. It also affects turbulent Damkohler and Karlovitz numbers, causing a slow-chemistry feature in the reaction zone. H2O addition promotes gasification reactions and inhibits in-furnace NO formation, resulting in low NOx emissions.
Article
Chemistry, Applied
Haoran Ding, Yonggang Jin, Stephen C. Hawkins, Liqi Zhang, Cong Luo
Summary: This study prepared CeO2-supported BaCoO3-δ oxygen carriers with different component distributions and evaluated their performance in CL-SMR. Among them, the sol-gel sample showed the best performance with a close-to-ideal H2/CO ratio of 2 and high syngas and hydrogen production.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Chemical
Ge Gao, Wufeng Jiang, Xiaoshan Li, Zhenghong Zhao, Cong Jiang, Cong Luo, Fan Wu, Liqi Zhang
Summary: Energy consumption is crucial in determining the suitability of chemical absorbents for capturing CO2. Polyamines with amino functional groups have recently received attention for their ability to effectively capture CO2. This study investigated the structures of seven polyamines with excellent CO2 capture performance in relation to reaction rate and CO2 absorption heat. The results showed that an increase in the ratio of secondary amino functional group to primary amino group led to a decrease in CO2 absorption heat and an increase in CO2 cyclic capacity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Xiaobo Cui, Chao Zhang, Liqi Zhang, Huaqing Yan
Summary: This study verified MYB proto-oncogene as a transcription factor and found that its expression level is significantly higher in various human cancers, and it is related to prognosis, immune score, and immune cells. MYB may serve as a powerful biomarker for tumor screening, prognosis, and individualized treatment strategy.
BIOSCIENCE REPORTS
(2023)
Article
Energy & Fuels
Zhenghong Zhao, Zewu Zhang, Xiaojian Zha, Ge Gao, Xiaoshan Li, Fan Wu, Cong Luo, Liqi Zhang
Summary: This study evaluates the feasibility of direct steam injection for forming an H2O-rich environment in MILD oxy combustion. The results show that inner-steam injection is better in controlling temperature rise and fluctuation, and maintaining MILD combustion. Inner-steam injection also inhibits fuel-N oxidation and enhances NO-reburning, leading to lower NO emission concentration.
Article
Chemistry, Applied
Yongqing Xu, Chuangao Lu, Cong Luo, Guang Wang, Xiaopei Yan, Ge Gao, Bowen Lu, Fan Wu, Liqi Zhang
Summary: This article introduces a new CaLP-TCES system that utilizes CO2 power cycle and steam power cycle to make full use of energy. The effects of different raw materials and organic acid modifications on the thermochemical energy storage performance of the CaO heat carriers in CaLP-TCES system are investigated. The results show that limestone is the best option for CaLP-TCES and glycine-modified limestone has a higher carbonation conversion rate. The full-day time mode of CaLP-TCES has a higher overall system efficiency and is more applicable for concentrated solar power.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Environmental Sciences
Zhengshuai Sun, Dingding Yao, Huang Guo, Haodong Zhu, Wenbin Hua, Qiaoxia Yuan, Liqi Zhang, Qizhou Fan, Baojun Yi
Summary: In this study, N-containing biochar was prepared under different conditions, and the interaction between N-containing biochar and biomass pyrolysis volatiles was studied. The results showed that N-containing biochar can act as adsorbents, catalysts, and reactants simultaneously, and different N configurations have different catalytic effects.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Jianping Luo, Xingdong Liang, Qichang Guo, Liqi Zhang, Xiangxi Bu
Summary: Cross water-air interface acoustic and electromagnetic integrated communication (AEIC) technology refers to transmitting information by exciting micro-amplitude waves on the water's surface and detecting the vibrations using millimeter wave radar. This paper presents a novel interference suppression method based on improved complete ensemble empirical mode decomposition and wavelet transform. It separates the water surface disturbance and micro-amplitude wave signals effectively, reducing the bit error rate of the communication system.
Article
Engineering, Chemical
Jialin Zhang, Song Hu, Yong Ding, Rui Huang, Qiangqiang Ren, Sheng Su, Yi Wang, Long Jiang, Jun Xu, Jun Xiang
Summary: In this study, a hydrothermal-carbonization method was utilized to process waste biomass, resulting in the production of high-value carbon aerogels. The banana peel-based carbon aerogel showed the best performance in ethanol cracking, achieving a hydrogen yield of 41.86%. The enhanced ethanol cracking was attributed to the abundant pores in the carbon aerogel, which extended the residence time, and the presence of inorganic components (such as Ca, Mg, and K) on the surface of the aerogel, which promoted bond-breaking and reorganization in ethanol.
Review
Engineering, Chemical
Chong Tao, Limo He, Xuechen Zhou, Hanjian Li, Qiangqiang Ren, Hengda Han, Song Hu, Sheng Su, Yi Wang, Jun Xiang
Summary: This review discusses the characteristics and removal methods of volatile organic compounds (VOCs) in cooking oil fumes. The emission characteristics are influenced by cooking temperatures, cooking oils, and cuisines. Various purification methods, such as physical capture, chemical decomposition, and combination methods, are compared based on VOC removal rate, operability, secondary pollution, application area, and cost. The catalytic combustion method, particularly with noble metal and non-noble metal catalysts, shows high efficiency, environmental friendliness, and low cost.
Article
Engineering, Aerospace
Liqi Zhang, Yonghui Zhao
Summary: In this study, a nonlinear time-varying aeroelastic model of a rotational variable swept wing is established, and the influence of sweep angle on flutter characteristics is investigated. The results show that sweep angle has a significant effect on flutter characteristics, and the flutter speed exhibits a jumping phenomenon with increasing sweep angle. Furthermore, it is found that the transient aeroelastic responses mainly occur in the post-lock stage and require more attention.
Article
Engineering, Environmental
Mengxia Qing, Linlin Zhang, Liang Liu, Yaxin Chen, Yunda Su, Sheng Su, Song Hu, Yi Wang, Jun Xiang
Summary: SiO2 doping improves the de-NOx activity of MnCe/Ti catalysts at high temperatures and enhances their sulfur resistance at wide temperatures.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Zhenghong Zhao, Zewu Zhang, Xiaojian Zha, Ge Gao, Xiaoshan Li, Fan Wu, Cong Luo, Liqi Zhang
Summary: Moderate or intense low-oxy dilution oxy-fuel (MILD-oxy) combustion can synergistically reduce CO2 and NOx emissions. Numerical simulations show that increasing O2 concentration weakens flue gas recirculation and promotes combustion intensity. Dry recycle mode has a more uniform temperature distribution, while wet recycle mode achieves diffusion/kinetics-controlled MILD regime. Dry recycle mode slows down coal char burnout, while wet recycle mode has more potential in achieving low NOx emission.
Article
Chemistry, Applied
Dingshan Cao, Cong Luo, Tong Luo, Zhaowei Shi, Fan Wu, Xiaoshan Li, Ying Zheng, Liqi Zhang
Summary: The focus of this study is to develop highly active and stable catalysts for the dry reforming of methane (DRM) technology. Using crystalline oxides as catalyst precursors is an effective optimization scheme for DRM. This paper systematically studies the application of La2NiO4 perovskite in DRM, including preparation methods, characterization, carbon deposition properties, regeneration properties, and B-site doping. The results show that the sample prepared by the sol-gel method exhibits the highest conversion of CH4 and CO2 and the best carbon resistance in DRM, while the sample prepared by the solid-state method shows the lowest DRM performance due to the small amount of reduced amorphous NiO and the weak reducibility of the perovskite phase.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Chemical
Wufeng Jiang, Xiaoyi Gao, Bin Xu, Ge Gao, Fan Wu, Xiaoshan Li, Liqi Zhang, Cong Luo
Summary: Ionic liquids (ILs)-based anhydrous biphasic absorbents are promising for CO2 capture due to their excellent absorption performance and low energy requirement for regeneration. The presence of water affects CO2 absorption by decreasing CO2 loading and absorption rate, but enhancing CO2 desorption efficiency. Water also slightly reduces the reaction heat and affects the primary CO2-product formed during absorption.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)
