Article
Green & Sustainable Science & Technology
Peng Lv, Ruofei Wu, Jiaofei Wang, Yonghui Bai, Lu Ding, Juntao Wei, Xudong Song, Guangsuo Yu
Summary: Hydrothermal carbonization (HTC) is an important method for energy recovery from carbonaceous waste. This study investigated the pretreatment of cow manure and industrial sludge by HTC at different temperatures. The results showed that HTC treatment can increase carbon content and reduce oxygen content, leading to the production of clean solid fuels with high energy densification. The study also found that the distribution of pyrolysis products of co-hydrochar is similar to that of industrial sludge. The co-hydrochar has good gasification reactivity and exhibits a synergistic effect.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Chemistry, Multidisciplinary
Jiantao Yang, Zhiming Zhang, Junyao Wang, Xuelei Zhao, Yong Zhao, Jianqiang Qian, Tengfei Wang
Summary: Pyrolysis and hydrothermal carbonization are important thermal techniques for dealing with biowaste. Understanding the formation pathways and properties of biochar and hydrochar is crucial for their applications in renewable energy and the environment.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Engineering, Environmental
Bei Zhang, Yiqun Jiang, Rajasekhar Balasubramanian
Summary: This study presents a novel method for producing carbon foam from biowaste through modified hydrothermal carbonization and pyrolysis processes, resulting in foam and multi-porous structures. The characterization results show that the biowaste-derived carbon foam possesses hierarchical micropore, mesopore, and macropore structures. The potential application of this material for CO2 capture is demonstrated.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Review
Green & Sustainable Science & Technology
Xiuzheng Zhuang, Jianguo Liu, Qi Zhang, Chenguang Wang, Hao Zhan, Longlong Ma
Summary: This study provides a comprehensive overview on hydrothermal carbonization, including the technical mechanisms, application advantages, and economic benefits. It emphasizes the potential of converting organic waste into valuable species and presents potential directions for future research to establish an efficient and clean mode of utilization for sustainable industrial development.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Ahmad Nawaz, Pradeep Kumar
Summary: The current study explored the impact of different hydrothermal carbonization temperatures (180, 230, and 280 degrees C) on the fuel properties, kinetics, thermodynamics, and reaction mechanism of sunflower stalks. The hydrochars obtained at different temperatures were pyrolyzed in a thermogravimetric analyzer (TGA) at varying heating rates. Characterization methods such as FTIR, FE-SEM, and XRD were used to examine the changes in functional groups, surface morphology, and crystallinity. The findings can be applied to the development and design of pyrolysis reactors for clean biofuel generation from sunflower stalks.
Article
Green & Sustainable Science & Technology
Ahmad Nawaz, Pradeep Kumar
Summary: This study aims to understand the pyrolysis kinetic behavior of biomass after hydrothermal carbonization and torrefaction, with enhanced fuel properties. Various characterization techniques were used to investigate the reaction mechanisms of pyrolysis.
Article
Environmental Sciences
Zhiming Zhang, Xuan Xuan, Junyao Wang, Xuelei Zhao, Jiantao Yang, Yong Zhao, Jianqiang Qian, Tengfei Wang
Summary: This review focuses on the nitrogen fate during the hydrothermal carbonization (HTC) of N-containing biowaste. The impact of critical factors such as N/O, N/C, N/H, solid ratio, initial N in feedstock, hydrothermal temperature, and residence time on the nitrogen content in hydrochar is analyzed. The distribution and conversion of nitrogen species in both hydrochar and liquid phase are discussed. Furthermore, the chemical forms of nitrogen in hydrochar and its role in the hydrochar formation mechanism are elaborated. Challenges and perspectives for the formation and regulation of nitrogen in biowaste during HTC are also presented.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agricultural Engineering
James L. Adair, Madeline Karod, Jillian L. Goldfarb
Summary: Agro-industrial wastes can be converted to sustainable fuels and carbon products using a cascaded HTC-pyrolysis process with clay catalysts. The addition of clay catalysts affects the hydrocarbon content of the bio-oil, depending on the insertion point in the process.
BIORESOURCE TECHNOLOGY
(2023)
Review
Agricultural Engineering
Zhiming Zhang, Jiantao Yang, Jianqiang Qian, Yong Zhao, Tengfei Wang, Yunbo Zhai
Summary: Hydrothermal carbonization (HTC) has the potential to convert wet biowaste into high-efficiency hydrochar resources, making it a renewable and sustainable way for biowaste recycling as biofuel.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Jiacheng Sun, Veronica Benavente, Stina Jansson, Ondrej Masek
Summary: Microalgae, derived from municipal wastewater treatment, can be used as sustainable feedstock to produce biochar and hydrochar. This study compared the properties and phytotoxicity of biochar and hydrochar produced from microalgae at different temperatures and residence times. The results showed that biochar promoted germination and seedling growth, while raw hydrochar exhibited strong phytotoxicity. Post-treatments such as dichloromethane washing and further pyrolysis were effective in mitigating hydrochar phytotoxicity. Biochar also had higher carbon sequestration potential compared to hydrochar.
BIORESOURCE TECHNOLOGY
(2023)
Article
Energy & Fuels
Qing He, Chen Cheng, Abdul Raheem, Lu Ding, Su Shiung Lam, Guangsuo Yu
Summary: Hydrothermal carbonization (HTC) pretreatment was conducted on pinewood and poplar wood to investigate its effect on woody biomass structure and reactivity. The results showed that slight and moderate HTC improved cellulose structure, while severe HTC led to cellulose decomposition. The increase in HTC temperature resulted in higher mesoporous specific surface area and pore volume, with pinewood showing more developed pore structure. HTC had little effect on cellulose structure under slight HTC, with diffusion playing a dominant role. Severe HTC increased lignin content and followed a high order reaction model during pyrolysis. The T-HTC/T-raw values for pinewood and poplar wood ranged from 0.938 to 1.340 and 0.924 to 1.422, indicating significant effects of HTC pretreatment on poplar wood pyrolysis reactivity.
Article
Polymer Science
Moonis Ali Khan, Bassim H. Hameed, Masoom Raza Siddiqui, Zeid A. Alothman, Ibrahim H. Alsohaimi
Summary: This study presents a comparative analysis of the physicochemical properties of chars produced by three thermochemical pathways: hydrothermal carbonization, pyrolysis, and microwave-assisted pyrolysis. The results demonstrate that temperature and power have significant effects on the mass yield, heating value, and structure of the chars. The optimal temperature for hydrothermal carbonization is 180°C, for pyrolysis is 500°C, and for microwave-assisted pyrolysis is 300 W.
Article
Environmental Sciences
Zavin R. Gajera, Alka A. Mungray, Eldon R. Rene, Arvind Kumar Mungray
Summary: This study aimed to produce and investigate the qualities of hydrochar fuel from cow manure using human urine as a solvent in order to find a suitable replacement for conventional fuel. The study found that the hydrochar produced at 180℃ and 2-hour reaction period had the lowest energy consumption during combustion. Additionally, the hydrochar produced at 200℃ and 4-hour reaction period had the highest heating value, 1.44 times higher than raw dung.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Energy & Fuels
Sibel Basakcilardan Kabakci, Basak Karakurt Cevik, Ezgi Bayrakdar Ates, Merve Nazli Borand
Summary: Hydrothermal pretreatment is an effective method to improve the fuel properties and modify the thermochemical conversion behavior of biowastes. This study focuses on the hydrothermal pretreatment of grape pomace and fermentation sludge, and investigates the changes in fuel properties, pyrolysis, and combustion behaviors. The results show that hydrothermal pretreatment increases the fixed carbon content and heating value, while decreases the ash content. The pyrolysis process is slowed down after pretreatment, and the types and temperatures of volatile compounds in the pyrolysis products are also changed.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Thermodynamics
Wijittra Poomsawat, Sawat Poomsawat
Summary: A treatment method for producing solid fuel from surgical face masks has been developed to address the cost and environmental concerns of medical waste management during the COVID-19 pandemic. The fuel properties of the solid fuel produced from face masks and from a mixture of face masks and biomass were investigated using a hydrothermal carbonization process and pyrolysis. The results showed that the fuel properties of the produced fuel were improved with an increased hydrothermal carbonization temperature. This research provides an environmentally friendly treatment method and potential utilization of polypropylene material as solid fuel.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Engineering, Environmental
Xiuzheng Zhuang, Yanpei Song, Xinming Wang, Hao Zhan, Xiuli Yin, Chuangzhi Wu, Peng Wang
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Nanoscience & Nanotechnology
Jianguo Liu, Hao Zhan, Nan Wang, Yanpei Song, Chenguang Wang, Xinming Wang, Longlong Ma, Lungang Chen
Summary: A novel COFs-supported nanoparticles Pd catalyst for region-selective SMC reaction of aryl boronic acids and aryl halides, especially with halogenated aryl boronic acids, was reported. The methodology offers mild operating conditions, broad functional group tolerance, and environmental friendliness, and the catalysts are stable and reusable. The precise regulation of nanoparticles Pd activity with the well-designed COF ligand is the most outstanding advantage.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Environmental
Sheng Li, Wei Song, Hao Zhan, Yanli Zhang, Xinran Zhang, Weiran Li, Shengrui Tong, Chenglei Pei, Yujun Wang, Yanning Chen, Zuzhao Huang, Runqi Zhang, Ming Zhu, Hua Fang, Zhenfeng Wu, Jun Wang, Shilu Luo, Xuewei Fu, Shaoxuan Xiao, Xiaoqing Huang, Jianqiang Zeng, Huina Zhang, Duohong Chen, Sasho Gligorovski, Maofa Ge, Chritian George, Xinming Wang
Summary: By measuring HONO and NOx in an urban tunnel, this study found that the conversion of NO2 on urban surfaces is important for HONO production compared to NO2 conversion on aerosol surfaces. The high uptake coefficient of NO2 on tunnel surfaces helps explain the missing HONO sources in urban areas.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Green & Sustainable Science & Technology
Xiuzheng Zhuang, Jianguo Liu, Qi Zhang, Chenguang Wang, Hao Zhan, Longlong Ma
Summary: This study provides a comprehensive overview on hydrothermal carbonization, including the technical mechanisms, application advantages, and economic benefits. It emphasizes the potential of converting organic waste into valuable species and presents potential directions for future research to establish an efficient and clean mode of utilization for sustainable industrial development.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Hao Zhan, Xiuzheng Zhuang, Shihui Zhang, Guozhang Chang, Xinming Wang, Zhiyong Zeng
Summary: Pharmaceutical biowastes are hazardous waste and renewable resources, and their efficient utilization as clean energy is important for environmental protection and resource savings. Co-hydrothermal carbonization with lignite coal can transform pharmaceutical biowastes into high-grade solid biofuel with high energy density and stable nitrogen structures.
Article
Energy & Fuels
Yufeng Chen, Hao Zhan, Zhiyong Zeng
Summary: This paper investigates the thermodynamic properties of confined fluids in nanoporous media and proposes an improved equation of state for accurately predicting the properties of fluid molecules. The results show that the density distribution in the nanopores is nonuniform and is influenced by various factors.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Agricultural Engineering
Lijian Leng, Weijin Zhang, Tonggui Liu, Hao Zhan, Jie Li, Lihong Yang, Jianan Li, Haoyi Peng, Hailong Li
Summary: Hydrothermal treatment is a potential technology for producing biofuel from wet biomass, but the properties of the generated aqueous phase are not well-studied. In this study, machine learning models were developed to predict the properties of the aqueous phase based on biomass feedstock and hydrothermal treatment parameters. The results showed that the gradient boosting decision tree can accurately predict the properties, and the feature importance analysis provided new insights.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Lijian Leng, Weijin Zhang, Qingyue Chen, Junhui Zhou, Haoyi Peng, Hao Zhan, Hailong Li
Summary: In this study, machine learning method was successfully utilized to predict and control nitrogen-heterocycles, bio-oil yield, and nitrogen content in bio-oil, achieving good predictive performance. The interpretation and study of the prediction models provided insights into the formation mechanisms and behavior of nitrogen-heterocycles.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Physical
Fanxiang Gao, Hao Zhan, ZhiYong Zeng
Summary: This study developed a novel methanol autothermal reforming hydrogen production system without catalytic combustion to produce hydrogen-rich gas with low CO concentration. Process simulation and thermodynamic optimization were conducted, and the results showed that the system achieved a self-sustaining operation and low CO concentration in the product gas. Compared with the reference system, the novel system demonstrated increased hydrogen yield and thermal efficiency under different conditions. The reformer was identified as the main exergy loss source, providing a theoretical basis for further parameter optimization.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Agricultural Engineering
Weijin Zhang, Qingyue Chen, Jiefeng Chen, Donghai Xu, Hao Zhan, Haoyi Peng, Jian Pan, Mikhail Vlaskin, Lijian Leng, Hailong Li
Summary: Hydrothermal treatment (HTT) is a promising technology for biomass valorization, and machine learning (ML) has been widely applied to predict and optimize the production from HTT. This review comprehensively analyzed the application of ML for HTT of biomass and summarized ML-aided HTT prediction of yield, compositions, and physicochemical properties of derived products. Future prospects were proposed to enhance predictive performance, mechanistic interpretation, process optimization, data sharing, and model application during ML-aided HTT.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Applied
Hao Bi, Zhiwei Wang, Hao Zhan, Lijian Leng, Zhiyong Zeng, Xinming Wang, Huacai Liu, Xiuli Yin, Chuangzhi Wu
Summary: This paper explores the feasibility of using acid-promoted hydrothermal to convert Chinese herbal residue (CHR) into higher-grade solid biofuel. The results show that under optimal conditions, using a more effective hydrothermal promoter can significantly improve the energy density and denitrogenation of CHR, resulting in a cleaner and more efficient solid biofuel.
FUEL PROCESSING TECHNOLOGY
(2022)
Review
Energy & Fuels
Lijian Leng, Junhui Zhou, Tanghao Li, Mikhail Vlaskin, Hao Zhan, Haoyi Peng, Huajun Huang, Hailong Li
Summary: This study provides an overview of the effects of biomass and HTL processing parameters on the distribution and transformation mechanisms of N-H during HTL of nitrogen-rich biomass. Factors such as biomass composition, HTL process parameters, and extraction conditions were found to influence the formation of N-H. Strategies for optimizing biomass feedstock, HTL process, and N-H analysis were proposed to promote the development in this area, with machine learning-aided prediction and regulation of N-H formation reactions showing promise.
Article
Environmental Sciences
Lijian Leng, Lihong Yang, Xinni Lei, Weijin Zhang, Zejian Ai, Zequn Yang, Hao Zhan, Jianping Yang, Xingzhong Yuan, Haoyi Peng, Hailong Li
Summary: This study used machine learning models to predict and optimize the specific surface area, nitrogen content, and yield of biochar, based on the composition of biomass and pyrolysis conditions. The results showed that pyrolysis temperature, residence time, and fixed carbon were the most influential factors in predicting the targets. The findings provide insights for designing biochar with desired properties and targeted applications.
Article
Engineering, Environmental
Hao Zhan, Shihui Zhang, Yanpei Song, Guozhang Chang, Xinming Wang, Zhiyong Zeng
Summary: The improvement of hydrothermal carbonization (HTC) and co-carbonization (co-HTC) on the upgrading and denitrogenation capabilities of industrial biowastes with low-rank coal as lignite (LC) was evaluated. The results showed that coupled upgrading and denitrogenation occurred with a more intense effect on industrial biowastes than LC during the HTC process. Co-HTC of industrial biowaste/LC in the prevailing hydrolysis or polymerization stage resulted in enhanced calorific value, energy recovery efficiency, nitrogen removal efficiency, and weakened nitrogen content, demonstrating the positive synergies on both upgrading and denitrogenation capabilities.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
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.