Article
Agricultural Engineering
Shan Tong, Yiming Sun, Xian Li, Zhenzhong Hu, Nakorn Worasuwannarak, Huan Liu, Hongyun Hu, Guangqian Luo, Hong Yao
Summary: The co-gasification of biomass and coal offers a cleaner way of utilizing fossil fuel, with the improved properties of biomass enhancing the syngas quality and synergistic effect during gasification. A novel gas-pressurized torrefaction method effectively upgrades biomass under mild conditions, significantly promoting coal gasification through synergistic effects. The kinetic model RPM was found to be the most fitting for co-gasification, with reduced activation energy and increased CO yield.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Tao Xu, Yongping Wu, Sankar Bhattacharya
Summary: This paper investigated the emissions of nitrogen and sulphur species during the pyrolysis and gasification of Maddingley and Yallourn coal in an entrained flow reactor. The study found that nitrogen and sulphur in coal are primarily converted into gaseous species during the gasification processes, and that high temperature and CO2 concentration have an impact on the emissions. The results are important for the gas cleaning process in entrained flow gasifiers.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Thermodynamics
Chaowei Wang, Chang'an Wang, Maoyun Luo, Lin Zhao, Pengqian Wang, Yujie Hou, Pengbo Zhao, Defu Che
Summary: The technology of oxy-fuel co-combustion is beneficial for consuming large amounts of ultra-low volatile coal-based solid fuels. It can promote the development of coal-chemical industry and reduce carbon emissions in power plants. However, the co-gasification behaviors of various coal-based solid fuel blends during the initial oxy-fuel co-firing stage need further study.
Article
Energy & Fuels
Nicolas Spiegl, Xiangyi Long, Cesar Berrueco, Nigel Paterson, Marcos Millan
Summary: A novel process has been developed to isolate a concentrated stream of CO2 from the exhaust of a power station by operating a fluidized bed gasifier with pure O2 and recycled CO2. By combining CO2 capture with the use of biomass, net negative emissions can be achieved. Co-processing biomass with lignite can further improve overall process performance.
Article
Thermodynamics
Pradeep Sahu, Prabu Vairakannu
Summary: Electronic wastes, especially printed circuit boards (PCBs), are thermally treated under N2 and CO2 conditions by pyrolysis and gasification processes. PCB pyrolysis at 500 degrees C yields 7.46% of tar with a calorific value of 31.28 MJ/kg. CO2 gasification of PCB mixture at 1000 degrees C achieves a conversion rate of 97.6%, resulting in high cold gas and exergy efficiencies. Co-gasification with high ash Indian coal increases the overall efficiency, and the residue can be used as a catalyst or additives in concrete material.
Article
Energy & Fuels
Arif Hasanoglu, Ender Faki, Acelya Secer, Sefika Turker Uzden
Summary: This study investigated the effects of different solvents on gasification and hydrogen yield in coal/biomass co-solvent hydrothermal gasification. The results showed that NMP and THF were the most effective solvents, increasing product conversion and hydrogen yield. Comparing subcritical and supercritical water conditions, the study found that the solvent was more effective in catalytic processes.
Article
Engineering, Chemical
Chuandong Ma, Zhisen Li, Wenqi Zhang, Meng He, Qingbiao Wang, Zhenhua Wang, Lin Li, Xiaofang You
Summary: In this study, hydrocarbon oil was used to modify coal gasification fine slag, enhancing its hydrophobicity and improving the flowability of the resulting coal-water slurry. The addition of hydrocarbon oil also reduced the ignition temperature of the slurry. These findings suggest that hydrocarbon oil modification is beneficial for enhancing the properties of coal gasification fine slag and its slurry.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Environmental Sciences
Zhaochen Shi, Yixiang Shu, Zongyi Wang, Hui Mao, Jiaye Zhang, Houzhang Tan, Xuebin Wang
Summary: Coal gasification is an effective method for clean and efficient utilization of coal, and the by-product of coal gasification, coal gasification fine slag, has high carbon content, large specific surface area, developed pore structure, and high output. Combustion has become an effective large-scale disposal method for coal gasification fine slag, and the fine slag after combustion can be further used as construction raw materials. This study investigated the emission characteristics of gas-phase pollutants and particulate matter under different combustion conditions, and found that co-firing coal gasification fine slag with raw coal can reduce submicron particle emission and total emission of gas-phase pollutants. Elemental analysis showed that furnace temperature and O2 concentration significantly influenced the formation of submicron particles.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Energy & Fuels
Hao Lu, Baozi Peng, Zefeng Ge, Jin Bai, Lingxue Kong, Huaizhu Li, Zhen Liu, Zongqing Bai, Wen Li
Summary: The study revealed that the viscosity and crystallization behavior of slag are mainly influenced by chemical composition, with the ratio of acid/basic oxides and SiO2/Al2O3 ratio playing a key role. Additionally, the Ca/Fe ratio in the liquid phase is an important factor affecting slag viscosity and crystallization.
Article
Thermodynamics
Namik Unlu, Sibel Ozdogan
Summary: In this study, the effect of blending torrefied biomass and coal samples on entrained flow co-gasification was experimentally investigated. The results showed that blending torrefied biomass with coal improved the gasification efficiency and syngas quality compared to conventional coal gasification. The findings suggest that co-utilization of coal and biomass can contribute to energy, waste, and climate change issues.
Article
Environmental Sciences
Yafeng Wang, Yuegang Tang, Ruiqing Li, Xin Guo, John P. Hurley, Robert B. Finkelman
Summary: Solid wastes from commercial coal gasification plants in China pose a significant environmental issue due to the large quantities produced. Hazardous trace elements in the residues show different release patterns, with some exceeding regulatory limits. Risk assessment indicates medium risk to the ecosystem, highlighting the need for consideration of potential environmental pollution from coal gasification plants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Shouxi Jiang, Laihong Shen, Jingchun Yan, Xin Niu, Bin Hu, Lingchang Wang
Summary: This study investigated the effects of sodium on coal combustion and NOx emissions in Zhundong coal. The results showed that water-soluble sodium had negative effects on coal conversion and NO generation during traditional combustion. However, when chemical looping was applied to Zhundong coal combustion, the NO emission was largely restrained and mainly came from pyrolysis. Additionally, the gasification agent facilitated NO generation and CO2 had a stronger effect on chemical looping.
Article
Chemistry, Applied
Linmin Zhang, Juntao Wei, Jie Xu, Xudong Song, Weiguang Su, Peng Lv, Ying Zhou, Guangsuo Yu
Summary: The co-gasification of coal and coal indirect liquefaction residue (LR) can mitigate environmental pollution caused by solid waste accumulation. The addition of LR effectively reduces ash fusion temperatures (AFTs) and promotes the formation of low-temperature eutectic, leading to a continuous decrease of AFTs. The ash melting behavior follows different mechanisms with and without LR addition. This study provides valuable insights for utilizing LR in coal gasification processes for reducing environmental impact.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Wencheng Yang, Jianbo Zhang, Lei Zhang, Jingying Li, Yonghui Bai, Ze Yan, Xiaoxun Ma, Cuili Hou, Wengui Yao
Summary: Partial gasification of coal char with addition of metal oxides can co-produce fuel gas and methane decomposition catalysts. Fe and Fe-Co composite oxides are found to be effective catalysts for fuel gas production, while Ni-based catalysts exhibit high and stable methane conversion in catalytic methane decomposition (CMD).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Yuefeng Wang, Xingrui Cai, Shugang Guo, Chong He, Yuexing Wei, Yue Wang, Yuhong Qin, Stanislav V. Vassilev, Christina G. Vassileva, Yanyun He
Summary: The addition of biomass such as straw in the coal gasification process is one of the strategies for clean and efficient utilization of coal with decreasing CO2 emissions. However, the abundance of chlorine and alkaline metals contained in the corn straw is the key factor to aggravate the corrosion, deposition, and slagging of the co-gasifier. The effects of temperature (700-900 degrees C), residence time (2-12 min) and the addition ratios of corn straw on the migration behavior of Cl are studied during co-gasification of Shenmu coal and corn straw.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Energy & Fuels
Filomena Pinto, Rui Neto Andre, Carlos Carolino, Miguel Miranda, Pedro Abelha, Daniel Direito, Jesper Dohrup, Hanne Risbjerg Sorensen, Francisco Girio
Article
Chemistry, Physical
Margarida Galhetas, Marta A. Andrade, Ana S. Mestre, Ekoe Kangni-foli, Maria J. Villa de Brito, Moises L. Pinto, Helena Lopes, Ana P. Carvalho
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2015)
Article
Engineering, Environmental
Marcia Freire, Helena Lopes, Luis A. C. Tarelho
Article
Energy & Fuels
Filomena Pinto, Rui Andre, Miguel Miranda, Diogo Neves, Francisco Varela, Joao Santos
Article
Energy & Fuels
Filomena Pinto, Jorge Gominho, Rui Neto Andre, David Goncalves, Miguel Miranda, Francisco Varela, Diogo Neves, Joao Santos, Ana Lourenco, Helena Pereira
Article
Energy & Fuels
Filomena Pinto, Jorge Gominho, Rui Neto Andre, David Goncalves, Miguel Miranda, Francisco Varela, Diogo Neves, Joao Santos, Ana Lourenco, Helena Pereira
Article
Engineering, Environmental
D. Godinho, D. Dias, M. Bernardo, N. Lapa, I. Fonseca, H. Lopes, F. Pinto
JOURNAL OF HAZARDOUS MATERIALS
(2017)
Article
Chemistry, Analytical
Paula Teixeira, Sandra Calisto, Helena Lopes, Maria Trancoso
ACCREDITATION AND QUALITY ASSURANCE
(2015)
Article
Energy & Fuels
E. T. Liakakou, B. J. Vreugdenhil, N. Cerone, F. Zimbardi, F. Pinto, R. Andre, P. Marques, R. Mata, F. Girio
Article
Green & Sustainable Science & Technology
Filomena Pinto, Jose M. Hidalgo-Herrador, Filipe Paradela, Paula Costa, Rui Andre, Jakub Fratczak, Colin Snape, Lukas Andel, Jaroslav Kusy
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Chemistry, Multidisciplinary
Helena Lopes, Susana Proenca
APPLIED SCIENCES-BASEL
(2020)
Review
Engineering, Chemical
Paula Costa, Filomena Pinto, Rui Neto Andre, Paula Marques
Summary: This paper reviews the latest information on the main operations for energy production from carbonaceous materials, particularly biomass and wastes, through the integration of gasification, syngas cleaning, and solid oxide fuel cells (SOFCs). It highlights the benefits, challenges, and proposed improvements in the process of producing combined heat and power (CHP) using this integrated approach.
Proceedings Paper
Biotechnology & Applied Microbiology
Filomena Pinto, Rui Andre, Helena Lopes, Diogo Neves, Francisco Varela, Joao Santos, Miguel Miranda
ICHEAP12: 12TH INTERNATIONAL CONFERENCE ON CHEMICAL & PROCESS ENGINEERING
(2015)
Proceedings Paper
Biotechnology & Applied Microbiology
Filomena Pinto, Rui Andre, Helena Lopes, Diogo Neves, Francisco Varela, Joao Santos, Miguel Miranda
ICHEAP12: 12TH INTERNATIONAL CONFERENCE ON CHEMICAL & PROCESS ENGINEERING
(2015)
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.