Article
Energy & Fuels
Beilei Sun, Fangui Zeng, Tim A. Moore, Sandra Rodrigues, Chao Liu, Guoquan Wang
Summary: Prospecting for trace and rare earth elements is expected to increase in the future as the world adopts sustainable energy and digital technology. This study investigates the distribution of trace elements, especially lithium, in coal beds in Shanxi Province, China. The research finds that trace elements, including lithium, are associated with the inorganic portion of the coal seams.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2022)
Article
Environmental Sciences
Yafeng Wang, Yuegang Tang, Ruiqing Li, Xin Guo, John P. Hurley, Robert B. Finkelman
Summary: Solid wastes from commercial coal gasification plants in China pose a significant environmental issue due to the large quantities produced. Hazardous trace elements in the residues show different release patterns, with some exceeding regulatory limits. Risk assessment indicates medium risk to the ecosystem, highlighting the need for consideration of potential environmental pollution from coal gasification plants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xueyu Zhou, Liangliang Guo, Yongbo Zhang, Ke Chang
Summary: This project studied the combined treatment effect of 821 gravity heat pipes and proposed different waste heat utilization methods. The results showed significant temperature reduction and decrease in harmful gas concentration after the treatment of the gravity heat pipe group. The waste heat resources can be used for indoor heating, greenhouse cultivation, and electricity generation through thermoelectric conversion.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Yuegang Tang, Xiaoshuai Wang, Harold H. Schobert, Cortland F. Eble, Tengda Ma, Yufei Su, Chengwei Yang, Kaiyu Xu
Summary: In this study, the cleaning potential of selected Chinese bituminous coals in southern Shanxi, China was evaluated based on coal quality, cleaning grade, and cleanability. Distribution maps were prepared to show different cleaning potential characteristics, with a total area of approximately 410 million m(2) and total reserves of about 1460 million tonnes. A cleaning potential gradient and equation for calculating it were proposed, and the necessity of processing raw coal of good quality considering economics was emphasized.
Article
Construction & Building Technology
R. Kusiorowski, A. Gerle, K. Dudek, K. Zwiazek
Summary: The research investigates the use of combustion waste as an additive in ceramic production, finding that combustion waste can be a valuable secondary raw material for ceramic clinker products as it enhances the sintering process of clinker ceramics.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Energy & Fuels
Sebastian Paczkowski, Victoria Knappe, Marta Paczkowska, Luis Alonzo Diaz Robles, Dirk Jaeger, Stefan Pelz
Summary: The study showed that hydrothermal treatment of short-rotation coppice willow biomass improved its combustion properties and significantly reduced the ash content, meeting the requirements of the European biomass pellet standard.
Article
Chemistry, Physical
Karolina Wojtacha-Rychter, Adam Smolinski
Summary: This paper presents the analysis of environmental and economic benefits of using waste as an energy source in cement clinker production. The study shows that substituting coal with refuse-derived fuels and sewage sludge can reduce carbon emissions and bring multiple benefits.
Article
Geochemistry & Geophysics
Jian Li, Shaowei Zhang, Hongdong Wang, Xichao Xie
Summary: This study investigates the mineral compositions and concentrations of major and minor element oxides and trace elements in the No. 9 coal from the Xinyuan mine in China. It discusses the occurrence and enrichment mechanisms of critical metal elements such as Li, Ga, Th and REY. The critical metal elements mainly occur in aluminum silicates and were transported to the study area by water, enriching the coal through the combination with clay minerals.
Article
Engineering, Environmental
Alexander Ilyushechkin, Chong He, San Shwe Hla
Summary: This study investigated the chemical species, mineralogy, and trace element mobilization in laboratory-produced ashes from different MSW streams processed under reducing and oxidizing atmospheres. Significant differences were found in mineral phase compositions and trace element concentrations between ashes produced under combustion and gasification conditions. Potential management strategies for MSW streams and utilization of mineral matter after combustion and gasification were proposed based on trace element concentrations in the ashes. Most MSW ashes were classified as Class IV (secure) waste according to Australian regulations.
WASTE MANAGEMENT & RESEARCH
(2021)
Article
Environmental Sciences
Jinchang Deng, Shaokun Ge, Haining Qi, Fubao Zhou, Bobo Shi
Summary: The study reveals that long-term spontaneous combustion of coal can have serious impacts on the atmosphere, prompting increased research attention. Through field surveys and modeling analysis, it was found that air pollution in coal fire areas is mainly influenced by combustion conditions and thermophysical parameters. Factor analysis indicates that these areas are primarily affected by sulfur oxides pollution.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Xiaoshuai Wang, Yuegang Tang, Harold H. Schobert, Tengda Ma, Sarma Pisupati, Junying Zhang, Yifan Chen
Summary: Research on the partitioning behavior of 17 deleterious trace elements in Ge-rich coals during combustion at different scales found differences in volatilization behavior, with elements being more completely volatilized in coal-fired power plants compared to laboratory settings due to operating conditions. The volatilization behavior of trace elements in combustion can be classified into three stages, with elements falling into four groups based on their behavior during these stages. Factors affecting the behavior of elements in combustion were also discussed, providing further insight into potentially controlling their emissions.
Article
Energy & Fuels
Fan Hu, Pengfei Li, Pengfei Cheng, Yaowei Liu, Guodong Shi, Yan Gao, Zhaohui Liu
Summary: The experimental study on the incineration treatment of sawdust and residual char blend in a tubular-furnace reactor and a 200-kW pilot-scale furnace is conducted. The influence of temperature and oxygen concentration on NO release characteristics is examined, indicating that the released NO mainly originates from fuel-NO under medium temperature and low oxygen environments. The results demonstrate that stable combustion and emission reduction can be achieved through MILD combustion of the solid waste blend.
Article
Forestry
Yufei Wang, Weibin Wang, Haibin Zhou, Fei Qi
Summary: This study examines the surface morphology and combustion properties of ancient wood in traditional buildings, comparing them with modern wood. The results provide important guidelines for fire protection and fire risk assessment of traditional buildings.
Article
Energy & Fuels
Yuanbo Lou, Shengchao Jiang, Bing Du, Xiaodong Dai, Tao Wang, Jiawei Wang, Yongsheng Zhang
Summary: This study analyzed the total contents and chemical forms of 13 hazardous trace elements in fly ash from municipal waste incineration to assess their environmental leaching risk and migration capacity. The results showed significant variations in the content of different trace elements, with the lowest amount recorded for Se and the highest amount for Zn. The risk evaluation demonstrated that all trace elements pose at least a low risk, while Cd and Sb have an extremely high risk level, resulting in a seriously polluted risk for the combined fly ash contamination.
Article
Engineering, Environmental
Yi Liu, Jianliang Wang
Summary: This study estimates the carbon emissions from municipal solid waste treatment across 30 Chinese provinces from 2011 to 2020. The results show that technological advances in waste treatment are the main driver of national carbon emissions reduction. Additionally, the impact of policies on carbon emissions changes is further analyzed using the LMDI-PDA model, considering socio-economic factors. The methods and results of this study can provide better decision-making support for national and provincial carbon emissions control policies targeting MSW treatment.
Article
Environmental Sciences
Yili Zhang, Yongchun Zhao, Zhuo Xiong, Tian Gao, Rihong Xiao, Pengfei Liu, Jing Liu, Junying Zhang
Summary: The study showed that V2O5/TiO2 and Ce-doped catalysts have both thermo- and photo-catalytic reactivities in removing elemental mercury, with Ce doping significantly improving the mercury removal properties of the catalyst.
Article
Environmental Sciences
Bing Yuan, Hongyun Hu, Yongda Huang, Biao Fu, Huimin Liu, Guangqian Luo, Yongchun Zhao, Hong Yao
Summary: Selenium in gaseous form is difficult to retain in solid phases during coal combustion due to its high saturated vapor pressure. Understanding the migration of SeO2(g) on ash particles in the low-temperature zone is essential for controlling selenium emission. The physically-bound Se in fly ash consists of selenium condensation and physical adsorption, with mullite showing the best performance in selenium capture at temperatures between 90-200 degrees C.
Article
Energy & Fuels
Xiangzheng Cui, Yongchun Zhao, Yushan Ji, Jingchao Liu, Tian Gao, Gangzhong Yang, Yi Wang, Rihong Xiao, Xing Chuai, Junying Zhang
Summary: The study examines the effect of heterogeneous agglomeration technology on the migration and emission of three trace elements (arsenic, selenium, and lead) in the tail flue gas of a domestic coal-fired power plant. The results demonstrate the efficient attachment of gaseous harmful trace elements to particulate matter, leading to significant reductions in their concentrations.
Article
Energy & Fuels
Rihong Xiao, Tian Gao, Xiangzheng Cui, Yushan Ji, Yili Zhang, Xing Chuai, Zhuo Xiong, Yongjin Liao, Hongbai Gu, Jianping Yang, Junying Zhang, Yongchun Zhao
Summary: CuCl2-MF is a cost-efficient and highly efficient sorbent for Hg removal from flue gas in coal-fired units, exhibiting high removal efficiency and recovery rate in large-scale coal-fired power plants. The optimal magnetosphere particle size of 45 μm-75 μm showed the highest mercury removal capacity, while CuCl2-MF also demonstrated good removal efficiency for low concentrations of mercury.
Article
Chemistry, Physical
Yili Zhang, Yongchun Zhao, Zhuo Xiong, Rihong Xiao, Tian Gao, Pengfei Liu, Jing Liu, Junying Zhang
Summary: Iodine-doped Bi2MoO6 nanomaterials prepared in this study showed significantly improved photocatalytic oxidation efficiency under visible light in N-2 + 4% O-2 atmosphere, mainly due to the iodine doping changing the band gap of the catalyst and accelerating the separation rate of photoinduced carriers. Additionally, flue gas components of SO2 and NO played a promoting role in mercury removal.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Environmental
Feng Xin, Rihong Xiao, Yongchun Zhao, Junying Zhang
Summary: This research proposes a method to reduce elemental mercury emission from coal-fired power plants by modifying magnetospheres with H2S as a sorbent. The modified magnetospheres show high affinity towards Hg-0 and can achieve over 80% adsorption efficiency. The technology has low cost, high recyclability, and minimal impact on environmental mercury pollution.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Jiangting Zhao, Zhuo Xiong, Yongchun Zhao, Xiaobo Chen, Junying Zhang
Summary: Photocatalytic conversion of CO2 into fuels is an encouraging long-term solution for addressing climate and energy issues. Constructing hetero-junctions using two or three materials is an efficient approach to improve photocatalytic performance. Recently, 2D-based hetero-junctions have gained popularity due to their unique structures and advantages. This review summarizes the literature on CO2 photocatalysis, with a focus on the overall structure, interface type, and material type of 2D-based hetero-junctions, and provides insights into the preparation, characterization, and reaction mechanism of novel 2D-based hetero-junctions, aiming to assist in designing improved composite photocatalysts for CO2 photoreduction.
ENVIRONMENTAL RESEARCH
(2023)
Article
Energy & Fuels
Xing Chuai, Qinghua Yang, Tiantian Zhang, Rihong Xiao, Xiangzheng Cui, Jianping Yang, Tianle Zhang, Xiaoxiang Chen, Zhuo Xiong, Yongchun Zhao, Junying Zhang
Summary: This study evaluated the emission and control characteristics of mercury during hazardous chemical waste incineration and improved the removal efficiency of mercury through modified activated carbon.
Article
Energy & Fuels
Rihong Xiao, Yi Wang, Yili Zhang, Zhuo Xiong, Junying Zhang, Yongchun Zhao
Summary: In this study, experiments were conducted to investigate the sodium release and particle matter (PM) formation mechanisms in Zhundong coal, and it was found that kaolinite additives had a positive effect on sodium release and PM formation.
Review
Environmental Sciences
Yicheng Wang, Hongyun Hu, Xinye Wang, Huimin Liu, Lu Dong, Guangqian Luo, Yongchun Zhao, Hong Yao
Summary: This study reviews the distribution characteristics of lead in coal and combustion by-products, summarizes the formation and migration mechanisms of particulate lead, and proposes targeted measures to control its formation and improve removal efficiency. However, the formation mechanism of fine particulate lead is still unclear, and there are differences in the removal principles of fine particles and particulate lead, posing a challenge for precise lead emission control.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Energy & Fuels
Ying Li, Yan Wang, Yangxian Liu, Yongchun Zhao
Summary: In this study, hydroxyl radicals (•OH) generated by the photochemical advanced oxidation process are used to modify different carbon-based materials to enhance their ability to adsorb gaseous Hg0. The modified materials show significantly improved Hg0 removal efficiency compared to samples modified with UV or H2O2 alone. Chemically adsorbed oxygen (O*) and C-O functional groups play a crucial role in the adsorption process.
Article
Environmental Sciences
Yushan Ji, Xiangzheng Cui, Jingchao Liu, Tianle Zhang, Shuzhou Wei, Junfeng Zhang, Yongchun Zhao, Junying Zhang
Summary: This paper studies the application of heterogeneous agglomeration technology in coal-fired flue gas treatment and analyzes its influence on the removal efficiency of trace elements. The results show that the heterogeneous agglomeration adsorbent can effectively reduce the emission concentration of trace elements in the flue gas.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Energy & Fuels
Qiancheng Lu, Wentao Lei, Wenjing Yue, Wenjie Huang, Yongheng Dong, Weijie Yan, Yang Liu, Yumin Chen, Yongchun Zhao
Summary: Plasma-based dry reforming was studied in an atmospheric dielectric barrier discharge (DBD) reactor using experiments and detailed kinetics simulation. The reaction mechanism of plasma-based dry reforming was investigated under different feeding gas composition, gas residence time, and operation temperature through in-situ optical emission spectroscopy (OES) measurements and reaction pathway analysis. It was found that increasing the feeding CH4 proportions resulted in higher generation of C2 and C3 hydrocarbons. Gas residence time had a larger effect on CH4 and CO2 conversion compared to input power. The formation of C2 hydrocarbon products followed a specific reaction pathway.
Article
Energy & Fuels
Shuzhou Wei, Tianle Zhang, Junying Zhang, Zhuo Xiong, Yongchun Zhao
Summary: This study analyzes the economic benefits of using renewable magnetospheres for mercury removal from coal-fired flue gas. The results show that the recovery of magnetospheres and mercury can bring higher economic returns. This technology can reduce operating costs and has significant economic investment potential, which is important for further commercialization.
Article
Energy & Fuels
Rihong Xiao, Yili Zhang, Zhuo Xiong, Junying Zhang, Yongchun Zhao
Summary: Photocatalytic technology has the advantages of being environmentally friendly, low energy consumption, and fast reaction speed, and can be applied in the field of visible light mercury removal. The hydrothermal synthesis of CQDs/2D-BWO composite catalyst was proposed to improve the oxidation efficiency of elemental mercury, and it showed high removal efficiency under visible light and good stability.