Article
Energy & Fuels
Jin Xie, Xiao-Dong Niu, Kai-Qiang He, Meng-Dan Shi, Su-Juan Yu, Chun-Gang Yuan, Jing-Fu Liu
Summary: This study investigated the distribution and speciation of arsenic and selenium in coal and burning byproducts in five coal-fired power plants in China. It was found that the concentrations of As and Se in fly ash and gypsum were significantly higher than in coal, indicating the need for proper disposal of coal-fired solid wastes.
Article
Engineering, Environmental
Xinyue Wang, Andrew C. Garrabrants, Zhiliang Chen, Hans A. van der Sloot, Kevin G. Brown, Qili Qiu, Rossane C. Delapp, Bruce Hensel, David S. Kosson
Summary: This study on a closed coal ash impoundment case demonstrated the effects of field redox conditions on the partitioning of arsenic and selenium. Multiple mechanisms of arsenic retention were found, and the presence of various redox processes and conditions controlled by spatial gradients and dis-equilibrium were observed.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Applied
Quan Tang, Changqian Du, Jiaqi Liu, Lingrui Fan, Jialu Niu, Chunhui Miao, Wancai Li, Biao Fu
Summary: Coal combustion releases chromium as particulates, but the oxidation of Cr into toxic hexavalent forms can be prevented by iron-bearing minerals and combustion temperature. The release of Cr increases with combustion temperature, but the degree of Cr oxidation does not. Chromium in coal mainly exists in illite and pyrite, and can be converted into stable compounds.
FUEL PROCESSING TECHNOLOGY
(2022)
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)
Article
Environmental Sciences
Rui Li, Huanhuan Zhang, Fu Wang, Yuting He, Chengpeng Huang, Lan Luo, Shuwei Dong, Xiaohong Jia, Mingjin Tang
Summary: Deposition of anthropogenic aerosols may affect dissolved Fe in the open ocean, but the solubility of Fe in these aerosols is not well understood. This study investigated the mass fractions, solubility, speciation, and isotopic compositions of Fe in coal and municipal waste fly ash. The results showed that the solubility of Fe in these aerosols is influenced by the presence of amorphous Fe, rather than particle size or surface area.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Chengcheng Fan, Baomin Wang, Hongmei Ai, Yi Qi, Ze Liu
Summary: The study found that using coal fly ash-based geopolymer for MSWI fly ash S/S treatment performed better than Portland cement, with higher compressive strength and higher immobilization rates for heavy metals.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Thermodynamics
Janusz Zdeb, Natalia Howaniec, Adam Smolinski
Summary: Mineralization of carbon dioxide using alkaline earth metals rich waste provides the opportunity for both carbon dioxide utilization and waste valorization. This study presents the results of an experimental investigation on a dry, direct carbonation method using bituminous coal derived fluidized bed fly ash under ambient conditions. The porous structure parameters of the process product were analyzed.
Article
Environmental Sciences
Yuki Itaya, Kenji Kuninishi, Yohey Hashimoto
Summary: Arsenic, selenium, and chromium can be harmful at certain concentrations and may be eluted from coal ash discharged from coal-fired power plants. Arsenic and selenium are eluted in forms that can be readily insolubilized, while chromium is eluted in the form of carcinogenic hexavalent chromium.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2022)
Article
Environmental Sciences
E. Strzalkowska
Summary: This paper explores the management of fly ashes from bituminous coal and lignite by identifying particles with different morphological and chemical compositions through microscopic observation and research techniques. The study examines the potential applications of the ashes and proposes magnetic separation of iron-rich particles as a method of management for full utilization.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Geochemistry & Geophysics
Amrika Deonarine, Allan Kolker, Michael W. Doughten, James T. Holland, Jeremy D. Bailoo
Summary: The study examined the influence of dissolved organic matter on arsenic mobilization from coal fly ash and found that organic matter can enhance arsenic mobilization under both oxic and anoxic conditions. The interaction between dissolved organic matter and fly ash particles, as well as competitive desorption of arsenic adsorbed on mineral surfaces, are key factors in the mobilization process.
APPLIED GEOCHEMISTRY
(2021)
Article
Chemistry, Physical
Ewelina Grabias-Blicharz, Rafal Panek, Malgorzata Franus, Wojciech Franus
Summary: Mechanically treated fly ash was used to provide Al and Si atoms for zeolite synthesis. The combination of mechanical activation and hydrothermal synthesis improved the dissolution of activated fly ash and the crystallization of zeolites. The obtained zeolite materials exhibited high crystallinity and a large specific surface area. This study provides important data for utilizing fly ash resources and synthesizing practical zeolites.
Article
Engineering, Environmental
Biao Fu, James C. Hower, Shuai Li, Yongda Huang, Yue Zhang, Hongyun Hu, Huimin Liu, Jun Zhou, Shiding Zhang, Jingjing Liu, Hong Yao
Summary: This study investigated the speciation of arsenic in fly ash derived from high-arsenic bituminous coal combustion, with a focus on the role of key ash components. Fe minerals were found to be crucial in capturing and oxidizing As3+ into solid phase, while magnetite enhanced arsenic enrichment in fly ash. Density functional theory suggested that the octahedral structure on Fe3O4 (111) surface may be strong active sites for arsenic adsorption. These findings have implications for developing effective techniques for arsenic removal.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Construction & Building Technology
E. R. Teixeira, A. Camoes, F. G. Branco
Summary: Sustainable construction is important, especially in terms of building materials. Using biomass fly ash as a cement replacement material in high-volume fly ash concrete can improve its properties and contribute positively to its quality, durability, and sustainability.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Environmental Sciences
Deming Han, Liwen Xu, Qingru Wu, Shuxiao Wang, Lei Duan, Minneng Wen, Zhijian Li, Yi Tang, Guoliang Li, Kaiyun Liu
Summary: The ultra-low emission retrofitting in China's coal-fired power plants enhances removal efficiencies of trace elements, but may increase their contents in fly ash and gypsum. While the potential environmental risks of trace elements in gypsum are low, there are moderate risks from fly ash, particularly in provinces like Guangxi, Hunan, and Hebei. Special attention should be given to the disposal of fly ash in these areas in the future.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Lingen Zhang, Qingming Song, Zhenming Xu
Summary: This study proposed an effective vacuum distillation method to remove arsenic and recover germanium and tungsten from coal fly ash (CFA). Experimental results showed a remarkable removal ratio of 96% for arsenic at a temperature of 550 degrees C. The research encourages further exploration of vacuum separation technology for environmentally friendly recycling of CFA.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Bryn E. Kimball, Andrea L. Foster, Robert R. Seal, Nadine M. Piatak, Samuel M. Webb, Jane M. Hammarstrom
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2016)
Article
Environmental Sciences
Huaming Guo, Yongfeng Jia, Richard B. Wanty, Yuxiao Jiang, Weiguang Zhao, Wei Xiu, Jiaxing Shen, Yuan Li, Yongsheng Cao, Yang Wu, Di Zhang, Chao Wei, Yilong Zhang, Wengeng Cao, Andrea Foster
SCIENCE OF THE TOTAL ENVIRONMENT
(2016)
Article
Engineering, Environmental
Christopher T. Mills, Carleton R. Bern, Ruth E. Wolf, Andrea L. Foster, Jean M. Morrison, William M. Benzel
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2017)
Article
Multidisciplinary Sciences
Justin A. Varholick, Jeremy D. Bailoo, Rupert Palme, Hanna Wurbel
SCIENTIFIC REPORTS
(2018)
Article
Multidisciplinary Sciences
Jeremy D. Bailoo, Eimear Murphy, Justin A. Varholick, Janja Novak, Rupert Palme, Hanno Wurbel
SCIENTIFIC REPORTS
(2018)
Article
Multidisciplinary Sciences
Sara Hintze, Luca Melotti, Simona Colosio, Jeremy D. Bailoo, Maria Boada-Sana, Hanno Wurbel, Eimear Murphy
SCIENTIFIC REPORTS
(2018)
Article
Behavioral Sciences
Jeremy D. Bailoo, Blair Quinius, Steven J. Schapiro, William D. Hopkins, Allyson J. Bennett
JOURNAL OF COMPARATIVE PSYCHOLOGY
(2019)
Article
Behavioral Sciences
Jeremy D. Bailoo, Eimear Murphy, Maria Boada-Sana, Justin A. Varholick, Sara Hintze, Caroline Baussiere, Kerstin C. Hahn, Christine Gopfert, Rupert Palme, Bernhard Voelkl, Hanno Wurbel
FRONTIERS IN BEHAVIORAL NEUROSCIENCE
(2018)
Article
Geochemistry & Geophysics
Courtney A. Creamer, Andrea L. Foster, Corey Lawrence, Jack McFarland, Marjorie Schulz, Mark P. Waldrop
GEOCHIMICA ET COSMOCHIMICA ACTA
(2019)
Article
Multidisciplinary Sciences
Justin A. Varholick, Alice Pontiggia, Eimear Murphy, Vanessa Daniele, Rupert Palme, Bernhard Voelkl, Hanno Wurbel, Jeremy D. Bailoo
SCIENTIFIC REPORTS
(2019)
Article
Geochemistry & Geophysics
Andrea Koschinsky, James R. Hein, Dennis Kraemer, Andrea L. Foster, Thomas Kuhn, Peter Halbach
Article
Multidisciplinary Sciences
Jeremy D. Bailoo, Bernhard Voelkl, Justin Varholick, Janja Novak, Eimear Murphy, Marianna Rosso, Rupert Palme, Hanno Wurbel
SCIENTIFIC REPORTS
(2020)
Review
Behavioral Sciences
Justin A. Varholick, Jeremy D. Bailoo, Ashley Jenkins, Bernhard Voelkl, Hanno Wuerbel
Summary: A systematic review and meta-analyses found little evidence for systematic phenotypic differences between dominant and subordinate male mice, potentially due to study heterogeneity concerning strain, group-size, age, housing and husbandry conditions, and dominance assessment method. Further research considering these secondary sources of variation may be necessary to determine if social dominance generally impacts treatment effects in substantive ways.
FRONTIERS IN BEHAVIORAL NEUROSCIENCE
(2021)
Article
Geochemistry & Geophysics
Amrika Deonarine, Allan Kolker, Michael W. Doughten, James T. Holland, Jeremy D. Bailoo
Summary: The study examined the influence of dissolved organic matter on arsenic mobilization from coal fly ash and found that organic matter can enhance arsenic mobilization under both oxic and anoxic conditions. The interaction between dissolved organic matter and fly ash particles, as well as competitive desorption of arsenic adsorbed on mineral surfaces, are key factors in the mobilization process.
APPLIED GEOCHEMISTRY
(2021)