Article
Energy & Fuels
Tomoaki Nakaishi
Summary: This study introduces a novel analysis framework for investigating the emission efficiency, reduction potential, and cost of CO2 and SO2 emissions from coal-fired power plants in China. The results show that there is a significant potential for reducing emissions, but at a high cost. The optimization of reduction efforts through linear programming provides effective mitigation strategies.
Article
Engineering, Environmental
Lin Peng, Anqi Guo, Dongdong Chen, Peng Liu, Baoxiang Peng, Mingli Fu, Daiqi Ye, Peirong Chen
Summary: In this study, highly dispersed and electron-deficient Cu-based catalysts were fabricated using nitrogen-doped carbon nanotubes as support. The Cu/NCNT catalyst outperformed other catalysts in terms of activity, selectivity, and resistance against water. The mechanism of the NH3-SCO reaction was also revealed. This research provides a new route for the design of highly active, water-tolerant, and low-cost Cu catalysts for reducing slip NH3 emissions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Energy & Fuels
Wei Zhang, YuMing Zhang, JiaZhou Li, ZheWen Chen, ZhongYuan Wang
Summary: In this study, a three-dimensional numerical model was established to investigate the efficiency of an industrial sodium-based dry desulfurization process. The results show that increasing the desulfurizer mass flux and decreasing particle size significantly improve the desulfurization efficiency. However, excessive addition of the desulfurizer leads to increased cost. Swirl-type structures achieve the maximum improvement in efficiency but also cause a significant increase in pressure drop, while diffuser-type structures have a low pressure drop and acceptable enhancement in efficiency.
Article
Construction & Building Technology
Maciej Zajac, Jiayi Song, Jan Skocek, Mohsen Ben Haha, Jorgen Skibsted
Summary: Carbonation of recycled concrete paste has the potential to reduce CO2 emissions in the cement industry by sequestering CO2 and using the carbonated material in new composite cements. This study investigates the effects of wet and semi-dry carbonation on the hydration reactions and performance of composite cements incorporating the carbonated material. The carbonation methods result in differences in composition and morphology of the carbonated paste, but the effects on cement performance are primarily influenced by the carbonation degree of the recycled concrete paste.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Energy & Fuels
Chang Jing-yang, Liu Meng, Wan Jun, Shi Guang-wei, Li Tao
Summary: Different modification methods were used to hydrate calcium oxide, and the desulfurization effect of modified calcium hydroxide and the influence of operating conditions were studied. The results showed that ethanol solution can effectively increase the specific surface area of the adsorbent, and temperature, H2O, SO2, and CO2 concentration have a significant impact on the desulfurization efficiency.
Article
Engineering, Environmental
Jiacheng Bao, Ping Ning, Fei Wang, Xin Sun, Chi Wang, Xin Song, Yansu Luo, Kai Li
Summary: A novel wet method utilizing highly active slurry containing CaO-thermally modified copper slag and KMnO4 oxidant has been developed for simultaneous removal of NOx and SO2, achieving high removal efficiency. The study also found that the efficiency of NOx removal primarily depends on calcination temperature, with CaO dosage and calcination time having a minor influence.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Wenbo Pei, Kuan Yang, Jiguang Deng, Yuxi Liu, Zhiquan Hou, Jia Wang, Yuan Feng, Xiaohui Yu, Hongxing Dai
Summary: In this study, a three-dimensionally ordered mesoporous Fe2O3-supported bimetallic AuPt single-atom catalyst (denoted as Au1Pt1/meso-Fe2O3) was synthesized via a modified polyvinyl alcohol-protected reduction route. The catalytic performance of this catalyst for methanol oxidation and its resistance to SO2 were investigated. The results showed that the Au1Pt1/meso-Fe2O3 catalyst exhibited better catalytic activity and superior SO2 resistance compared to other catalysts, making it a promising candidate for VOCs elimination in the presence of SO2.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Green & Sustainable Science & Technology
Di Zhou, Rufei Wei, Yulong Zhu, Hongming Long, Bangfu Huang, Yifan Wang, Shoucang Wu
Summary: The one-step preparation of calcium sulfate whiskers from flue gas desulfurization ash was successfully achieved using a hydrothermal method, with control of temperature, time, and speed parameters being crucial. Adding a medium solution purification link in the hydrothermal system contributes to the production of high-quality calcium sulfate whiskers products.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Xiaoshuo Liu, Rui Wang, Xinze Geng, Ao Shen, Cong Chen, Yifan Xu, Xunlei Ding, Yufeng Duan, Shilin Zhao
Summary: This study investigated the competitive reaction selectivity between HCl and SO2 on Ca-based adsorbents and found the significance of kinetics in determining the reaction selectivity. The experimental results showed that HCl had a higher selectivity for active sites and a faster dechlorination reaction rate. In-situ FTIR spectroscopy demonstrated that HCl reacted with desulfurized products, which contributed to the high selectivity of the dechlorination reaction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Konstantin Khivantsev, Carlos Garcia Vargas, Jinshu Tian, Libor Kovarik, Nicholas R. Jaegers, Janos Szanyi, Yong Wang
Summary: The atomically dispersed Rh cations on ceria, prepared by a high-temperature atom-trapping synthesis, are shown to be the active species for the (CO+NO) reaction with high turnover frequency at 120 degrees C. In wet conditions, the main products are ammonia and nitrogen above 120 degrees C. The presence of water promotes low-temperature activity and enhances NH3 formation in the reaction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Environmental
Paavo Auvinen, Niko M. Kinnunen, Janne T. Hirvi, Teuvo Maunula, Kauko Kallinen, Matthew Keenan, Mika Suvanto
Summary: Despite being harmful to the environment and human health, NOx can protect a methane oxidation catalyst from deactivation. The presence of NO and NO2 can block active sites on a non-poisoned catalyst, reducing methane conversion, but promote it on a poisoned catalyst. This research provides insights for developing new environmentally friendly solutions for the heavy-duty vehicle industry.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Alemu Wakene, Feleke Zewge, Yonas Chebude, Melakuu Tesfaye, Andualem Mekonnen
Summary: The synthesized calcium silicate hydrate (CSH) showed efficient phosphate removal with 95.69% removal efficiency, dominated by chemisorption mechanism according to experimental and modeling analysis, confirming its spontaneous and endothermic nature for phosphate adsorption. The findings demonstrate the potential of CSH as a low-cost silicate material for phosphate abatement in water treatment applications.
SEPARATION SCIENCE AND TECHNOLOGY
(2022)
Article
Construction & Building Technology
Zhibo Wei, Qingsong Liu, Zengqing Sun, Xiaoxian Huang, Min Gan, Zhiyun Ji, Xuling Chen, Xiaohui Fan
Summary: In this study, an efficient co-disposal method for flue gas desulphurization residue (DR) and red mud (RM) was developed, resulting in the synthesis of high strength alkali activated materials (AAM). The synthesized AAMs exhibited excellent mechanical properties.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Environmental
Shenghui Yu, Cheng Zhang, Lun Ma, Peng Tan, Qingyan Fang, Gang Chen
Summary: The study found that different mineral oxide sorbents have varying effects on gas-phase arsenic adsorption, with NaCl promoting or inhibiting the arsenic adsorption efficiency of different sorbents. Acid gases also have different inhibitory effects on the adsorption, with the order of inhibition intensity being HCl > SO2 > CO2 at 700 degrees C.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Rudi Duan, Yingjie Feng, Jialiang Gu, Ming Hao Wang, Beini He, Lili Liu, Bingjun Zhu, Xidong Wang
Summary: A highly efficient desulfurizer with excellent SO2 removal performance and stability is developed using sacrificial MOF template and activated semi-coke.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Jonathan Peter Kyle Seville, Yimin Deng, Sarah Dawn Bell, Raf Dewil, Lise Appels, Renaud Ansart, Tom Leadbeater, David Parker, Huili Zhang, Andrew Ingram, Jan Baeyens
Summary: This study demonstrates the successful use of Positron Emission Tomography (PET) in imaging the adsorption process of high-pressure CO2, validating the measurement results with conventional exit gas analysis. The PET technique can be utilized to measure the kinetics of adsorption processes in gas-solid systems, with potential applications in pre-combustion CO2 capturing and other processes involving gas-solid interactions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
John M. Wheeldon, Jan Baeyens, Shuo Li, Yimin Deng
Summary: An analysis was conducted on pneumatic conveying pressure drop data, resulting in the development of an equation of motion considering pipe diameter, terminal velocity, coefficient of restitution, and particle shape. Adjusting terminal velocity for voidage did not improve data fitting, but calculated pressure drop values were within +/- 15% of measured values.
Article
Chemistry, Applied
Yimin Deng, Jonathan Peter Kyle Seville, Sarah Dawn Bell, Andrew Ingram, Huili Zhang, Nick Sweygers, Raf Dewil, Jan Baeyens, Lise Appels
Summary: Gas adsorption is widely used in air pollution control, with activated carbon and zeolites commonly used as adsorbents. In this study, in-situ measurements of absorbate/adsorbent interactions using Positron Emission Tomography were compared for activated carbon and zeolite adsorbents. The results helped evaluate previous adsorption correlations and parameters for predicting adsorption isotherms, kinetics, and mechanisms.
SEPARATION AND PURIFICATION REVIEWS
(2022)
Article
Engineering, Chemical
Juan Pablo Capossio, Maria Paula Fabani, Andres Reyes-Urrutia, Rodrigo Torres-Sciancalepore, Yimin Deng, Jan Baeyens, Rosa Rodriguez, German Mazza
Summary: This study evaluated the environmental advantages and disadvantages of using a natural convection solar dryer for the dehydration of spent grains from microbreweries. Suitable models were used to simulate the drying processes under different conditions. The results showed that the natural convection solar dryer had significant environmental benefits in terms of energy consumption and CO2 emissions compared to the conventional electric convective dryer.
Article
Energy & Fuels
Yimin Deng, Raf Dewil, Lise Appels, Flynn Van Tulden, Shuo Li, Miao Yang, Jan Baeyens
Summary: Natural gas, being a major fuel source, is being researched for its potential to be partially decarbonized through the production of hydrogen. The thermo-catalytic decomposition of CH4 into H-2 and C is gaining interest as a promising technology. Cheaper and more efficient catalysts are being investigated for this process.
Article
Green & Sustainable Science & Technology
Yimin Deng, Jia Liu, Shuo Li, Raf Dewil, Huili Zhang, Jan Baeyens, Hrvoje Mikulcic
Summary: The decomposition of dolomite and limestone particles with the addition of steam has been investigated, showing that steam can significantly accelerate the reaction rate and reduce the decomposition temperature, leading to cost reduction and reduced CO2 emissions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Jia Liu, Shuo Li, Raf Dewil, Maarten Vanierschot, Jan Baeyens, Yimin Deng
Summary: Thermal water splitting through redox reactions has the potential to contribute to a hydrogen-based energy economy. The efficiency and characteristics of different redox reactions were investigated, and the optimal conditions for the reactions were determined. The experimental and economic results highlight the importance of improving the reverse cycles of the redox system.
Article
Environmental Sciences
Jia Liu, Shengzhi Wei, Huili Zhang, Yimin Deng, Jan Baeyens, Raf Dewil, Nick Sweygers, Lise Appels
Summary: The study demonstrates the excellent performance of synthesized Mg-ferrite adsorbent in adsorbing acid fuchsine, including high adsorption capacity, suitable adsorption kinetics and isotherms, as well as good stability and reusability.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Yimin Deng, Shuo Li, Lise Appels, Raf Dewil, Huili Zhang, Jan Baeyens, Hrvoje Mikulcic
Summary: Current energy systems have a significant environmental impact and future energy systems must rely on clean and renewable sources. This study discusses the catalytic steam reforming of methanol (CSRM) for H-2 production and assesses the performance of two novel catalysts. The results show that the Co/alpha-Al2O3 catalyst has significantly better performance than MnFe2O4, with high methanol conversion, H-2 yield and low CO and CO2 by-products formation. This research is important for further investigation and application of the CSRM system.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Chemical
John M. Wheeldon, Jan Baeyens, Shuo Li, Yimin Deng
Summary: An analysis was conducted on pressure drop data from the acceleration region of seven vertical dilute-phase pneumatic conveyors. Despite different conditions, no effect of other variables was identified. The developed spreadsheet model is simpler and provides more accurate results compared to complex numerical models.
PARTICULATE SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Daniela Zalazar-Garcia, Anabel Fernandez, Lucas Cavaliere, Yimin Deng, Jose Soria, Rosa Rodriguez, German Mazza
Summary: In this study, slow pyrolysis of pistachio waste pellets was investigated using macro-thermogravimetric analysis. The experimental results showed that heating rate had an effect on the yields of biochar, gas, and bio-oil. A kinetic model for CO release was proposed and showed good agreement with experimental data. The 3-E analysis indicated that an increase in heating rate resulted in higher pyrolysis exergetic efficiency.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Review
Thermodynamics
Gilles Flamant, Benjamin Grange, John Wheeldon, Frederic Siros, Benoit Valentin, Francoise Bataille, Huili Zhang, Yimin Deng, Jan Baeyens
Summary: Concentrated Solar Power (CSP) is a renewable energy technology that uses heliostats to concentrate solar irradiance onto a receiver, where a fluid is used as a heat carrier. Using gas/solid suspensions as heat transfer medium in CSP offers advantages over other fluids, including higher achievable temperatures. Recent experiments have shown promising results using upflow bubbling fluidized beds for heat transfer in CSP systems. Challenges still remain in transferring particles between different components of the system.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Yimin Deng, Shuo Li, Lise Appels, Huili Zhang, Nick Sweygers, Jan Baeyens, Raf Dewil
Summary: Catalytic steam reforming of ethanol (CSRE) is a promising method for hydrogen production. Ethanol can be derived from low-cost carbohydrates or biomass through fermentation. This study explores the use of novel non-noble catalysts, impregnated in alpha-Al2O3, for CSRE. The catalytic experiments demonstrate high hydrogen yields and negligible catalyst deactivation. Pilot-scale investigations have been initiated.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Environmental Sciences
Miao Yang, Shuo Li, Yimin Deng, Jan Baeyens, Huili Zhang
Summary: The catalytic CH4 decomposition over Fe-based catalyst is a cost-effective and environmentally friendly method for producing Co-x-free H-2 and carbon nanotubes. Varying the Fe-loading influenced the catalytic performance, with the highest H-2 yield obtained at a 12% Fe content. Characterization techniques revealed the properties of the fresh and spent catalysts.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Multidisciplinary
Yimin Deng, Shuo Li, Raf Dewil, Lise Appels, Miao Yang, Huili Zhang, Jan Baeyens
Summary: Future energy systems must rely on clean and renewable sources to reduce CO2 emissions. This research explores the potential of using metal oxide oxidation/reduction reactants for hydrogen production through water splitting, and initial results are promising.