Article
Energy & Fuels
Zhanshi Ni, Haobo Bi, Chunlong Jiang, Chengxin Wang, Junjian Tian, Wenliang Zhou, Hao Sun, Qizhao Lin
Summary: Thermogravimetry and Fourier transform infrared spectroscopy were used to analyze the co-pyrolysis characteristics of coal slime and coffee industry residue, showing a synergistic effect and reduced greenhouse gas emissions with 30% blending of residue. Principal component analysis and non-isothermal methods identified reaction laws, while an artificial neural network model successfully predicted the co-pyrolysis data.
Article
Chemistry, Physical
Wei Zhang, Xiaowei Wang, Qianshi Song, Qianyi Chen, Haowen Li, Zixin Yang, Xiaohan Wang
Summary: The objective of this study is to investigate the effects of inorganic element catalysis and basic fuel properties on pyrolysis kinetics and self-sustained smoldering characteristics of sewage sludge. The study found that the pyrolysis process can be divided into two stages determined by the organic and inorganic components of the fuel. Inorganic components have a significant catalytic effect on volatiles release and decomposition. The smoldering experiment showed different propagation speeds for the smoldering front and the evaporation front. The research findings contribute to the development and optimization of sewage sludge disposal by considering feedstock composition.
Article
Environmental Sciences
Zhanshi Ni, Haobo Bi, Chunlong Jiang, Junjian Tian, Hao Sun, Wenliang Zhou, Qizhao Lin
Summary: Co-pyrolysis of coal gangue and coffee industry residue was studied using TG-FTIR, revealing significant interaction between CG and CIR during pyrolysis. The comprehensive pyrolysis index showed an exponential decrease as the ratio of CG increased.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Energy & Fuels
Norbert Miskolczi, Szabina Tomasek
Summary: This study investigated the pyrolysis process of municipal sewage sludge samples using thermogravimetric analysis. The results revealed that decomposition reactions occurred in the range of 200-600℃ and involved biodegradable components, proteins, and carbohydrates. The study also compared different methods for calculating the kinetic parameters and found variations in the activation energy range for samples from different sources.
Article
Energy & Fuels
Chengxin Wang, Haobo Bi, Qizhao Lin, Chunlong Jiang, Xuedan Jiang, Kesheng Meng
Summary: This study evaluated the co-combustion of sewage sludge and rice husk using TG-FTIR, showing improved combustion behavior with increasing rice husk blending ratio and minimum activation energy at 30% blending. Analysis of gaseous products and functional groups revealed CO2 as the predominant volatile with increasing rice husk blending ratio.
BIOENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Fangjun Chen, Shiliang Yang, Jianhang Hu, Qingang Xiong
Summary: This study investigates the catalytic effect of calcined copper slag on the pyrolysis of municipal sewage sludge. The results show that copper slag can accelerate the thermal decomposition rate of sewage sludge and affect the composition of the gaseous products. This is of great significance for the integrated resource recycling of these two solid wastes.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Energy & Fuels
Haobo Bi, Chengxin Wang, Xuedan Jiang, Chunlong Jiang, Lin Bao, Qizhao Lin
Summary: The study investigated the co-pyrolysis characteristics of sewage sludge and peanut shell under nitrogen atmosphere, using thermogravimetric - Fourier transform infrared spectrometry and artificial neural network. The experiments revealed a synergistic effect between sewage sludge and peanut shell, with shared gases and functional groups. The activation energy E was calculated using two non-isothermal kinetic analysis methods, and the best ANN model (ANN21) for predicting pyrolysis was identified.
Article
Energy & Fuels
Zhanshi Ni, Zhihui Song, Haobo Bi, Chunlong Jiang, Hao Sun, Zhicong Qiu, Liqun He, Qizhao Lin
Summary: In this study, co-combustion experiments using coal slime and cellulose were conducted. The addition of cellulose significantly improved the ignition and comprehensive combustion performance of coal slime. The dominant reaction in the co-combustion process was analyzed, revealing the mechanism of enhanced release and combustion of early volatiles. Furthermore, the evolution law and temperature dependence of gaseous products were analyzed using spectroscopy techniques.
Article
Thermodynamics
Haobo Bi, Zhanshi Ni, Chunlong Jiang, Wenliang Zhou, Hao Sun, Qizhao Lin, Liqun He
Summary: The effect of cellulose on the pyrolysis characteristics of coal gangue was studied using TG-FTIR experiment. The study observed a synergistic effect between cellulose and coal gangue on mass loss. The reaction mechanism of coal gangue and cellulose co-pyrolysis was determined, and the comprehensive influencing factors were analyzed. This study is of great significance for understanding the mechanism of biomass and coal gangue co-pyrolysis and promoting the utilization of fossil energy.
COMBUSTION AND FLAME
(2022)
Article
Environmental Sciences
Yuhang Dong, Fei Wang, Zhirong Ye, Fengyu He, Lishan Qin, Guojun Lv
Summary: The leather industry produces significant amounts of tanning sludge (TS) and other solid wastes. Co-firing TS with different wastes in a fluidized bed was investigated to assess combustion properties, acid gas conversion, and ash management. TG-FTIR test showed that tanning solid wastes had better combustion properties and higher gaseous pollutants compared to TS. Leather mixed solid waste (LMSW) formed by mixing had better fuel characteristics than TS. Co-combustion of TS and solid wastes reduced acid gas conversion rates.
ENVIRONMENTAL POLLUTION
(2023)
Article
Thermodynamics
Wenliang Zhou, Qizhao Lin, Chengxin Wang, Haobo Bi, Chunlong Jiang, Junjian Tian, Yu Liu, Zhanshi Ni, Hao Sun
Summary: In this study, co-pyrolysis experiments were conducted on blended coal slime (CS) and traditional Chinese medicine residue (CMR) using TG-FTIR-MS. The activation energy of samples with different conversion rates was calculated using KAS and FWO methods. PCA analysis was used to compare the contribution of different blending ratios to the principal components, and the optimal model for simulating and predicting the remaining mass of the pyrolysis mixture was obtained.
COMBUSTION SCIENCE AND TECHNOLOGY
(2023)
Article
Thermodynamics
Zhanshi Ni, Haobo Bi, Chunlong Jiang, Hao Sun, Wenliang Zhou, Zhicong Qiu, Liqun He, Qizhao Lin
Summary: Thermogravimetric-Fourier transform infrared spectrometry was used to investigate the co-pyrolysis of coal slime and lignin in this study. The composition and evolution of gaseous products during the pyrolysis process were analyzed, as well as the influence of lignin content. An artificial neural network prediction model with a relative error less than 2.5% was established.
Article
Energy & Fuels
Malgorzata Labus
Summary: This study focused on the decomposition reactions of pyrite under different atmospheres, in kerogen and bulk source rock, and the evolved gases. The results showed that only SO2 gas was detected during pyrite decomposition. Pyrite content over 10% in a rock sample can be detected, and SO2 is released during combustion and pyrolysis processes.
Article
Green & Sustainable Science & Technology
Hao Sun, Haobo Bi, Chunlong Jiang, Zhanshi Ni, Junjian Tian, Wenliang Zhou, Zhicong Qiu, Qizhao Lin
Summary: This study investigated the co-pyrolysis characteristics and kinetics of sewage sludge (SS) and wet waste (WW) using TG-FTIR-GC/MS and ANN techniques. The results showed that the S3W7 mixture exhibited a synergistic effect on pyrolysis and effectively reduced CO2 emissions. GC/MS analysis revealed that the gas products of S3W7 mainly contained nitrides, hydrocarbons containing C=O, and furans. Machine learning methods were used to analyze the pyrolysis process and establish a prediction model.
Article
Energy & Fuels
Zhanshi Ni, Haobo Bi, Chunlong Jiang, Hao Sun, Wenliang Zhou, Zhicong Qiu, Qizhao Lin
Summary: This study investigated the co-pyrolysis of coal slime and cellulose using TG-FTIR-MS. It was found that the addition of cellulose improved the pyrolysis performance of the sample. Various analysis methods were used to obtain data and results, providing a foundation for further research on the development and utilization of solid waste.
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.