Article
Biochemistry & Molecular Biology
Zhiqiang Ni, Yue Cao, Xiaopeng Zhang, Ning Zhang, Wu Xiao, Junjiang Bao, Gaohong He
Summary: This paper presents an optimization model based on the superstructure method to determine the best membrane process for CO2 capture. The results show that the combination of different membrane types achieves better results, with a CO2 capture cost reduced to 11.75$/tCO2.
Article
Engineering, Chemical
Xiaowan Peng, Yun-Lei Peng, Meng Huo, Jin Zhao, Qiuwei Ma, Bei Liu, Chun Deng, Mingke Yang, Baocan Dong, Changyu Sun, Guangjin Chen
Summary: To enhance CO2 capture capacity and selectivity, researchers have developed a porous slurry composed of ZIF-8 and C16 isoparaffin. This optimized slurry exhibits low viscosity, high sorption speed, and low CO2 sorption heat. It also demonstrates higher CO2 sorption capacity and selectivity compared to existing commercial CO2 absorbents. Additionally, the slurry system can be easily regenerated through pressure swing, making it a promising alternative for separating IGCC gas with higher efficiency and lower energy cost.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Siyue Ren, Xiao Feng, Yufei Wang
Summary: The research conducted emergy analysis on coal and biomass based IGCC power generation systems with/without CCS, showing that the sustainability of systems can be improved with the integration of CCS but will result in increased investment costs. It was found that under high CO2 tax values, adopting CCS can further enhance the sustainability of IGCC systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Environmental Sciences
Viktor Alexandrovich Kuznetsov, Daria Mikhailovna Bozheeva, Andrey Viktorovich Minakov
Summary: Combustion or gasification of coal in a nitrogen-free environment is a promising technology for reducing the carbon footprint. This study numerically investigates the oxy-gasification processes of pulverized coal in a CO2-H2O-O-2 environment and examines the influence of various factors on the physicochemical processes and syngas composition. The results show that increasing oxygen concentration in the blast can stabilize ignition and combustion of coal, while decreasing the excess oxygen ratio leads to increased combustible losses in the gasifier.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Energy & Fuels
David Berstad, Geir Skaugen, Simon Roussanaly, Rahul Anantharaman, Petter Neksa, Kristin Jordal, Stian Traedal, Truls Gundersen
Summary: The capture conditions for CO2 vary greatly among industrial point sources. Different capture technologies are required depending on the CO2 fraction and pressure level to achieve cost- and energy-efficient decarbonization. This study proposes a process design for low-temperature CO2 capture from an Integrated Gasification Combined Cycle (IGCC) power plant. Steady-state simulations were conducted and the performance of the overall process and major components were investigated. The results show that compressor and expander efficiencies, as well as synthesis gas separation temperature, have the highest impact on power requirements. Modifying the process to produce cold liquid CO2 for ship transport increases net power requirements by 16% and is suitable for capturing CO2 for shipping.
Article
Engineering, Environmental
Ke Wang, Feng Gu, Peter T. Clough, Youwei Zhao, Pengfei Zhao, Edward J. Anthony
Summary: This study successfully synthesized a highly efficient and pure form of Li4SiO4 using a new method and demonstrated its excellent sorption performance at low CO2 concentrations. The newly synthesized Li4SiO4 sample has a highly porous nano-agglomerate-like structure, allowing for rapid CO2 adsorption.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Thermodynamics
Peng Zhang, Jingjing Tong, Kevin Huang, Xuefeng Zhu, Weishen Yang
Summary: In recent years, the concept of direct CO2 capture and conversion has attracted significant interest due to its potential to address global warming, fossil fuel depletion, and carbon neutral ecosystem. While current CO2 capture technologies are energy intensive and costly, CO2 conversion technologies are still in their early stages with technical challenges to overcome. The emerging high-temperature electrochemical CO2 transport membranes offer a promising approach for capturing and converting CO2 in a single catalytic reactor, with potential for future development.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2021)
Article
Engineering, Environmental
Wenjia Luo, Fei Li, Huan Li, Zhixun Zhang, Xi Zhang, Youqian Liang, Guoxian Huang
Summary: With the rapid development of nanotechnology, nanomaterials are expected to revolutionize membrane separation, particularly in the field of gas separation. The use of nanomaterials in membrane-based separation offers high efficiency, low consumption, and easy preparation, making it a promising technology for CO2 capture.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Maytham Alabid, Cristian Dinca
Summary: This study demonstrates a sensitive analysis of CO2 capture from a coal-fired power plant using membrane technology. The results show that the choice of membrane material and various parameters such as membrane number of stages, surface area, and compressors' pressure can significantly affect the power plant performance. By implementing a three-stage membrane configuration instead of a two-stage configuration, the efficiency and levelized cost of energy (LCOE) can be improved.
APPLIED SCIENCES-BASEL
(2023)
Article
Thermodynamics
Hongming Fu, Kaili Xue, Zhaohao Li, Heng Zhang, Dan Gao, Haiping Chen
Summary: This paper investigates the differences in CO2 capture performance between ceramic and PTFE membranes and finds that ceramic membranes exhibit favorable CO2 capture performance under appropriate operating parameters.
Article
Engineering, Chemical
Qinghua Li, Hongyu Wu, Zhi Wang, Jixiao Wang
Summary: This paper analyzes the application of membrane separation technology in CO2 capture and proposes strategies to reduce energy consumption and capture cost. The presence of water vapor can enhance CO2 transport driving force and decrease membrane area and capture cost.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Applied
Sriram Valluri, S. K. Kawatra
Summary: Post combustion CO2 capture technology using electrodialysis with bipolar membrane separation can reduce reagent regeneration energy significantly, achieving lower costs compared to thermal regeneration. Switching to alkali absorbents like sodium carbonate and sodium hydroxide not only saves costs but also makes the technology more attractive as membrane prices decrease in the future.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Chemical
Xiaoxia Zhang, Meng Rong, Peiyong Qin, Tianwei Tan
Summary: This study introduces a nitrogen-rich ultramicroporous polyaminal network (PAN-NH2) into crosslinked PEO polymer to prepare CO2-philic MMMs with superior CO2 capture and transport performance, thanks to the synergistic effect of the dipole-quadrupole interaction and molecular sieving.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Yangyang Dai, Zhenhua Niu, Tian Fang, Yuanyuan Wang, Suyue Zhong, Peng Mu, Jian Li
Summary: The concept of constructing a one-dimensional-two-dimensional intercalated network supported ionic liquid membrane was proposed to overcome the low permeability issue of 2D graphitic carbon nitride membrane in CO2 separation. The resulting membrane exhibited superior CO2 permeance and selectivity, and demonstrated excellent durability after long-term testing.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Lie Meng, Teruhiko Kai, Shin-ichi Nakao, Katsunori Yogo
Summary: This study aims to explore the possibility of achieving a CO2 capture ratio >95% and CO2 purity >95% using currently available CO2-selective polymer membranes in a gas-separation unit. A mathematical model was developed to investigate the effect of membrane characteristics and operating parameters on CO2 capture performance. The simulation results reveal optimal conditions for high-performance CO2 capture and highlight the potential of facilitated transport membranes in CO2 removal in industrial processes.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2023)
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.