Article
Chemistry, Physical
Andrei Shoppert, Dmitry Valeev, Julia Napol'skikh, Irina Loginova, Jinhe Pan, Hangchao Chen, Lei Zhang
Summary: It was found that complete dissolution of amorphous aluminosilicates from the mullite surface with the formation of low-alkali mullite concentrate prior to sulfuric acid leaching helps to accelerate the extraction of REEs. After 5 hours of leaching at 110°C and acid concentration of 5M, the extraction degree of Sc and other REEs reaches 70-80%, compared to less than 20% for the raw CFA under the same conditions.
Article
Chemistry, Multidisciplinary
C. Righi, I Lancellotti, L. Barbieri, G. M. Kirkelund
Summary: Municipal solid waste incineration fly ash (MSWI FA) contains hazardous heavy metals and soluble salts. This research investigated the use of electrodialytic treatment as a pre-treatment for MSWI FA, and its impact on metakaolin-based geopolymer as an encapsulation matrix. The results showed that geopolymer effectively encapsulated heavy metals, and electrodialytic pre-treatment improved the environmental and mechanical characteristics of the geopolymer.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2022)
Article
Materials Science, Ceramics
Yupeng Xie, Ailian Zhu, Min Chen, Keyou Shi, Qiucai Zhang, Guowen Peng, Yong Liu
Summary: Considerable amounts of coal fly ash (CFA) are produced annually without proper utilization. Alkali-activated CFA was introduced to prepare ceramics to treat neodymium-contaminated soil, and its effect on the properties of the ceramics was investigated. The alkali activation of CFA led to a desilication reaction and the generation of new phases rich in sodium, enhancing the mechanical properties of the ceramics. The alkali-activated CFA exhibited higher bulk density and homogeneous distribution of Nd ions in the matrix compared to untreated CFA.
CERAMICS INTERNATIONAL
(2023)
Article
Construction & Building Technology
Sepehr Seyedian Choubi, Cagla Meral Akgul
Summary: This study investigates the impact of heat exposure on the performance of alkali-activated coal fly ashes (AAF). The results show that the mechanical performance varies depending on the exposure temperature and intrinsic properties of the activated ashes. Low-Ca AAFs are found to be more stable compared to high-Ca AAFs. Heat exposure also significantly reduces the thermal conductivity and volumetric specific capacity of all AAFs.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Bingchuan Cheng, Rentai Liu, Xiuhao Li, Enrique del Rey Castillo, Mengjun Chen, Shucai Li
Summary: Increasing FA/CBA values can improve the performance of backfill materials, but the excellent water retention of CBA may reduce drainage capacity. A 0.5% superplasticizer and a 30%-50% FA/CBA ratio can meet the requirements and have been applied in a filling mining project.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Environmental
Xuezhong Zhang, Jianfei Yu, Baosheng Jin, Yaji Huang, Zhifei Wang
Summary: This study successfully increased the adsorption capacity of raw coal fly ash (CFA) for PbCl2 through thermal alkali modification, and confirmed that the formation of hydroxysodalite improved the pore structure properties of the sorbent. Additionally, the modified CFA also exhibited excellent adsorption performance for Zn and Cr. This research is significant for the development of environmentally friendly sorbents in the future.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Haiqing Xu, Chunli Liu, Xue Mi, Zhongbing Wang, Junwei Han, Guisheng Zeng, Pengfei Liu, Qian Guan, Haiyan Ji, Shuzhen Huang
Summary: A novel process for extracting lithium from coal fly ash was proposed in this study, achieving over 90% lithium recovery under optimized conditions. The proposed method provides a platform reference for further studies on efficient extraction of resources with similar mineral compositions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Tsugumi Seki, Kengo Nakamura, Yasumasa Ogawa, Chihiro Inoue
Summary: Coal fly ash (CFA) is a useful recycled resource for applications such as cement production. A study in Japan examined the leaching concentration range of toxic elements such as arsenic and selenium in different types of CFA. The study found that the leaching processes of these elements in CFA changed over time depending on environmental conditions, highlighting the importance of managing and evaluating safety for effective utilization of CFA.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Energy & Fuels
Junke Zhang, Kejun Wen, Lin Li
Summary: The study used bacteria to bio-modify coal fly ash and found that some metals leaching concentrations decreased while others increased after bio-modification. The increase in pH and carbonate production during bio-modification contributed to the stabilization of certain metals, while organic products and carbonates competition promoted the leaching of other metals.
Article
Materials Science, Ceramics
Zhikun Zhang, Zhichuan Li, Yibo Yang, Boxiong Shen, Jiao Ma, Lina Liu
Summary: In this study, municipal solid waste incineration fly ash was recycled into environmentally friendly glass-ceramics. The effects of different parameters on the crystalline phases, mechanical properties, and heavy metals leaching of the glass-ceramics were investigated. The results showed that the glass-ceramics exhibited stable crystalline phases, good mechanical properties, high alkali resistance, and low potential ecological risk, indicating their potential application feasibility.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Mina Mohebbi, Farshad Rajabipour, Edris Madadian
Summary: This study developed a synergistic framework using microcharacterization techniques and leaching tests to identify the dominant host phases for major and trace elements in pulverized coal fly ash. By analyzing the host phases, the impacts can be controlled and sustainable industrial symbiosis can be developed, leading to predictions of long-term environmental impacts of combustion byproducts under different beneficial use scenarios.
Article
Green & Sustainable Science & Technology
Weihua Peng, Yingying Liu, Manli Lin, Yan Liu, Cheng Zhu, Linhua Sun, Herong Gui
Summary: The study found that heavy metal concentrations in leachates from coal fly ash and coal gangue were low, but still inhibited the survival and reproduction of Daphnia magna. The toxicity of the leachates to D. magna was influenced by the chemical composition of the leachates and the properties of the coal fly ash and coal gangue.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Sarah Curpen, Nadya Teutsch, Konstantin Kovler, Sabrina Spatari
Summary: Disposal of coal fly ash (CFA) is controversial due to the release of heavy metals into the ground and aquifers, posing risks to communities and the environment. However, utilizing CFA as fill material in embankments can lead to economic and environmental benefits. This study evaluated the environmental effects of using CFA versus sand through life cycle assessment (LCA) and found that utilizing CFA in embankments reduces impact categories compared to landfilling.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Construction & Building Technology
Saif Al-Shmaisani, Ryan D. Kalina, Raissa Douglas Ferron, Maria C. G. Juenger
Summary: The availability of traditional siliceous Class F fly ash is decreasing as countries switch to renewable energy sources. To extend the availability of siliceous fly ash, suppliers are distributing blended coal ashes and incorporating other coal combustion products (CCPs) or natural pozzolans. While the characteristics of these blended fly ashes may differ, they perform well in cement-based mixtures.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Green & Sustainable Science & Technology
Dmitry Valeev, Petr Bobylev, Nikita Osokin, Irina Zolotova, Ilia Rodionov, Cristian Salazar-Concha, Konstantin Verichev
Summary: Coal combustion in Russia produces a significant amount of coal fly ash (CFA), which is being considered as a potential raw material for aluminum production due to the country's lack of bauxite sources.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Organic
Yang Luo, Mingli Hu, Jun Ge, Bin Li, Ling He
Summary: This paper presents a method for the synthesis of trifluoroethoxylated dihydropyrrolidones via rhodium-catalyzed oxidation and trifluoroethoxylation of pyrrolidones, achieving the trifluoroethoxylation of non-activated sp(3) C-H for the first time. The resulting compounds exhibit anti-tumor activity and can be used as hit compounds for further research.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Chao Huang, Ping Qin, Yang Luo, Qingdong Ruan, Liangliang Liu, Yuzheng Wu, Qingwei Li, Yue Xu, Rugeng Liu, Paul K. Chu
Summary: Water splitting, which produces hydrogen (H2) and oxygen (O2), requires noble metal catalysts for efficiency. Cobalt-based catalysts are desirable substitutes for expensive noble metals due to their lower cost, natural abundance, comparable performance, and good stability.
MATERIALS TODAY ENERGY
(2022)
Article
Chemistry, Physical
Lunhong Ai, Yang Luo, Weijie Huang, Yao Tian, Jing Jiang
Summary: In this work, a rational design of multivariate metal-organic framework(MOF)-based electrocatalysts for the oxygen evolution reaction (OER) is reported. The catalytically inactive Ce-BTC is found to greatly enhance the performance of other electrocatalysts, and the resulting Co0.9Ce0.1-BTC exhibits outstanding OER performances comparable to commercial IrO2 and other previously reported MOF-based OER electrocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Electrical & Electronic
Zhangliang Xu, Yang Luo
Summary: This paper describes an immunoglobulin G (IgG) biofunctionalized quartz crystal microbalance (QCM) sensor for Staphylococcus aureus (S. aureus) sensing applications. The experimental results show that the IgG-based QCM sensor exhibits good sensitivity performance and has a higher sensitivity in liquid phase compared to air.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yanbo Li, Yang Luo, Peng Sun, Bowen Peng, Jiaqing Wang, Zhiyuan Shao, Lianzhu Zhou, Binbin Qian, Bin Ma, Yueyang Hu, Luming Wang
Summary: This study synthesized a new metakaolin-based geopolymer using disused artificial zeolite and investigated its influence on the performance and pore structure of the final products. The results showed that the incorporation of disused artificial zeolite adjusted the pore structure of the samples, forming multiscale pore structures, and exhibited good mesoporosity and foaming performance.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Fei Ma, Lianzhu Zhou, Yang Luo, Jiaqing Wang, Bing Ma, Binbin Qian, Jun Zang, Yueyang Hu, Xuehong Ren
Summary: This study investigates the use of pristine steel slag as an expansion material to mitigate the high autogenous shrinkage of geopolymers. The addition of steel slag eliminates the shrinkage of the geopolymer and reduces its bulk density. Steel slag not only provides calcium for the formation of C-A-S-H, but also fills the pores and refines the pore structure. Therefore, using steel slag as an expansion agent is an efficient approach for mitigating shrinkage in fly ash-based geopolymers.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2022)
Review
Chemistry, Physical
Wenxian Liu, Jinxiu Feng, Tianran Wei, Qian Liu, Shusheng Zhang, Yang Luo, Jun Luo, Xijun Liu
Summary: Aqueous rechargeable Zn-gas batteries are considered promising energy storage and conversion devices due to their safety and environmental friendliness. However, their energy efficiency and power density are limited by slow cathode reactions. This review introduces battery configurations and fundamental reactions, summarizes recent advances in active site engineering and cathode material regulation strategies, and provides personal perspectives on the future development of Zn-gas batteries.
Editorial Material
Engineering, Electrical & Electronic
Tiande Mo, Fengxiang Chen, Yu Li, Yang Luo
WORLD ELECTRIC VEHICLE JOURNAL
(2023)
Letter
Materials Science, Multidisciplinary
Chao Huang, Xiao-Lin Zhang, Jing Tang, Dan Li, Qing-Dong Ruan, Liang-Liang Liu, Fang-Yu Xiong, Bin Wang, Yue Xu, Sui-Han Cui, Yang Luo, Qing-Wei Li, Paul K. Chu
Article
Environmental Sciences
Lei Wen, Lin Lin, Yi-ang Fan, Yang Luo, Sheng-shou Ma, Ying Zhou, Chao Yang, Kaimin Shih, Xiao-yan Li
Summary: The disposal of wastewater sludge is a challenging environmental problem. In this research, thermally hydrolyzed sludge (THS) is used with clay to make ceramic tiles. The experimental results showed that a THS dosing ratio of up to 40% can be achieved for mixing with clay, but further addition of THS deteriorates the quality of the tiles.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Yinghong Wu, Tyler J. Cuthbert, Yang Luo, Paul K. Chu, Carlo Menon
Summary: Triboelectric nanogenerators (TENGs) that can convert ambient mechanical energies into electricity have gained interest. Ionogel-based TENGs (I-TENGs) with excellent thermal stability and adjustable ionic conductivity have attracted attention. The conductivity of the ionogel is affected by the crosslinking monomer and ionic liquid composition. The structure-property relationships of the ionogel components are important for the performance of I-TENGs.
Article
Chemistry, Physical
Yinghong Wu, Yang Luo, Paul K. Chu, Carlo Menon
Summary: In this study, conductive copper-benzenehexathiol (Cu-BHT) layers are developed and the potential mechanisms responsible for the conductivity difference on different substrates are explored. It is found that both the molecular movement inside the polymer and the fusion between the polymer and Cu-MOFs affect the intrinsic conductivity and stability. This research establishes potential criteria for selecting flexible substrates for conductive 2D MOFs and demonstrates the significance of conductive 2D MOFs in flexible and wearable applications.
Editorial Material
Chemistry, Multidisciplinary
Yang Luo, Yinghong Wu
Article
Materials Science, Multidisciplinary
Quan Zhang, Kang Lian, Gaocan Qi, Shusheng Zhang, Qian Liu, Yang Luo, Jun Luo, Xijun Liu
Summary: As a clean energy carrier, hydrogen energy has become an integral part of the global clean energy strategy and a necessary pathway towards achieving global carbon neutrality. Water electrolysis, driven by renewable electricity, holds promise as a long-term hydrogen production method that can achieve net zero carbon emissions. High-entropy alloys (HEAs) offer numerous catalytic active sites due to their unique structural features, making them ideal candidates for hydrolysis catalysts. This review summarizes the mechanisms of water electrolysis, catalytic principles of HEAs in hydrolysis processes, and the latest research progress of HEAs as water electrolysis catalysts. It also provides insights into the challenges and potential of novel HEA design approaches in this field, focusing on the relationship between surface morphology and catalytic activity. The compositions and potential applications of HEAs in water electrolysis and other emerging fields are outlined.
SCIENCE CHINA-MATERIALS
(2023)
Review
Chemistry, Physical
Wenxian Liu, Jinxiu Feng, Tianran Wei, Qian Liu, Shusheng Zhang, Yang Luo, Jun Luo, Xijun Liu
Summary: This review introduces aqueous rechargeable Zn-gas batteries and the challenges they face, discusses recent advances in enhancing the intrinsic catalytic activities of cathode catalysts and optimizing the performance of Zn-gas batteries, and presents personal perspectives for future development.
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
