Article
Engineering, Chemical
Ariel Z. Plantz, Gary T. Rochelle
Summary: This paper reviews previous work on the use of potassium iodide (KI) as an inhibitor to minimize amine oxidation in post-combustion carbon capture (PCCC). The results show that KI is effective in reducing oxidation in bench-scale experiments, but loses its effectiveness in high-temperature cycling experiments. The study highlights the importance of testing oxidation inhibitors under realistic conditions and evaluating their viability on an industrial scale.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Review
Engineering, Chemical
Solrun Johanne Vevelstad, Vanja Buvik, Hanna K. Knuutila, Andreas Grimstvedt, Eirik Falck da Silva
Summary: The chemical stability of aqueous amines is crucial to reduce risks related to operation, cost and environment. Current research on amine degradation lacks standardized methods and understanding of which components to search for. This work provides an overview of the current status of amine degradation research and recommendations for further study.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Energy & Fuels
Trevor J. Kalkus, Caitlin J. Shanahan, Jansie Smart, Ali Coskun, Michael Mayer
Summary: This paper compares the maximum power densities achieved from the combination of reverse electrodialysis (RED) with carbon capture (CC) using various CC solvents, and finds that ammonia yields the highest power density. The work provides a foundation for future development of carbon capture technology.
Article
Environmental Sciences
L. Morey, B. Fernandez, L. Tey, C. Biel, A. Robles-Aguilar, E. Meers, J. Soler, R. Porta, M. Cots, V. Riau
Summary: The increasing energy and fertilizer consumption in agriculture necessitate the development of sustainable alternatives. This study investigated the use of solar drying technology combined with acidification to reduce the water content and gaseous emissions of manure-derived digestate and solid fraction of digestate. The acidified products showed higher nitrogen and ammonia nitrogen recovery, as well as significant reductions in ammonia and methane emissions. However, N2O emissions increased. The dried products met EU regulations for organic fertilizers, but zinc concentrations exceeded legal limits in some cases.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Review
Multidisciplinary Sciences
Mihrimah Ozkan, Saswat Priyadarshi Nayak, Anthony D. Ruiz, Wenmei Jiang
Summary: Climate change requires the use of negative emission technologies like DAC to mitigate global warming. The increasing global interest in DAC technologies has led to the implementation of new tax credits and policies, motivating existing companies and startups. However, DAC technologies still need improvement in terms of cost reduction and efficiency. The current cost of DAC is higher than desired and is dependent on the energy source used.
Article
Multidisciplinary Sciences
Kevin Maik Jablonka, Charithea Charalambous, Eva Sanchez Fernandez, Georg Wiechers, Juliana Monteiro, Peter Moser, Berend Smit, Susana Garcia
Summary: To understand the impact of intermittent operation of a power plant using amine-based carbon capture processes, stress tests were conducted on a plant operating with a mixture of two amines. A machine learning model was developed to forecast emissions and model the impact of interventions. The findings suggest the need for reconsidering mitigation strategies for capture plants using a mixture of amines, as certain interventions have opposite effects on the emissions of solvent components.
Article
Chemistry, Physical
S. Meenakshi, Kapil Sonkar, Sachin Chugh, Rajesh Badhe, G. S. Kapur, S. S. V. Ramakumar
Summary: Membrane Electrode Assembly (MEA) in a Polymer Electrolyte Membrane Fuel Cell (PEMFC) is crucial for the performance of the fuel cell system. This study investigates the degradation of a stack operated MEA and characterizes it using electrochemical and physical methods. The results show that the MEA assembly decomposes at specific temperatures for the Nafion membrane, carbon-supported catalyst, and carbon-based GDL. The degradation is evidenced by the decrease of electrocatalyst surface area and the migration of catalyst particles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Saman Hasan, Abubakar Jibrin Abbas, Ghasem Ghavami Nasr
Summary: This study compared the CO2 removal efficiency, cost, and recirculation rate of different absorbents in gas power plants, finding that MEA is a promising solvent for CO2 capture. However, there are limitations in clean flue gas outlet, which can be addressed by increasing concentration or circulation rate.
Article
Engineering, Environmental
Qiang Sun, Hongxia Gao, Teerawat Sema, Zhiwu Liang
Summary: This study compared the CO2 desorption performance of different Si/Al ratios of HZSM-5 zeolites and successfully synthesized hierarchical HZSM-5 with higher catalytic activity. The results showed that desilication by modification in sodium hydroxide could significantly improve the mesoporous surface area and enhance CO2 desorption capacity. These findings are important for improving catalyst design in CO2 capture technology.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Food Science & Technology
Lina Sun, Wenrui Guo, Yujia Zhai, Lihua Zhao, Ting Liu, Le Yang, Ye Jin, Yan Duan
Summary: This study screened three strains from different regions of Inner Mongolia that have the ability to degrade biogenic amines (BAs) in meat products. These strains can degrade various BAs, especially tryptamine and phenethylamine. They can be used as starter cultures in meat products due to their good fermentation capacity and strong ability to reduce BAs.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Xu Zhao, Xue Zhao, Wenli An, Yuwei Long, Xuehui Liu, Li Chen, Shimei Xu, Yu-Zhong Wang
Summary: Chemcycling of waste plastics aims to achieve efficient degradation and utilization of degradation products. This study presents a chemical upcycling strategy for waste anhydride-cured epoxy thermosets, where the thermosets are degraded using an alkali/alcohol system to obtain two degradation products with a yield of about 90%. These products are then modified into new epoxy monomer and curing agent, directly used for preparing high-performance epoxy thermosets. The degradation products account for more than 80% of the new epoxy thermoset.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Sang Jun Han, Jung-Ho Wee
Summary: Two CO2 chemical absorption systems using AMP and MEA aqueous solutions were compared in terms of absorption performance and electrical properties. The study found that the absorption capacity in the AMP system increases linearly with C-ini, while the absorption rate in the MEA system is affected by concentration and primary reaction changes. The differences in performance can be attributed to the molecular structures and sizes of the two systems.
Article
Engineering, Chemical
Huifeng Fan, Yuanhao Mao, Hongxia Wang, Yunsong Yu, Xiaomei Wu, Zaoxiao Zhang
Summary: Electrochemically-mediated amine regeneration (EMAR) has been developed as a promising substitute for conventional amine-based CO2 capture. This study compares the performance of monoethanolamine (MEA) and ethylenediamine (EDA) in the EMAR process. The results show that the complex of Cu(II)-EDA exhibits higher stability and is more competitive in releasing the absorbed CO2. However, poor diffusion performance hinders the scale-up application of EDA.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Atif Khan, Hamayoun Mahmood, Saima Yasin, Muhammad Moniruzzaman, Tanveer Iqbal
Summary: AOPs have shown great potential in water purification and treatment, particularly in the removal of toxins, emerging pollutants, pesticides, and harmful substances. This research provides a comprehensive assessment of innovative AOPs for the treatment of MEA in aqueous phase, examining degradation mechanisms, process parameters, and various AOP methods. The review is helpful for researchers in understanding critical operating parameters and developing commercially viable solutions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Joicy Bianca de Souza Costa, Felipe de Andrade Oliveira Silva, Felipe Cunha da Silva Trindade, Andre Fernando Lavorante, Daniel de Filgueiras Gomes, Jose Fernando Dagnone Figueiredo, Ana Paula Silveira Paim
Summary: The objective of this study was to develop a sensor based on variation of the electrical resistance of graphene-polystyrene sensor film for the determination of ammonia gas. The sensor showed linear response to ammonia concentrations from 5-30 mg L-1, with low detection and quantification limits.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(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.