Emission and transformation behavior of minerals and hazardous trace elements (HTEs) during coal combustion in a circulating fluidized bed boiler
Fu, B (Fu, Biao)[ 1,2 ]; Liu, GJ (Liu, Guijian)[ 1,2 ]; Sun, M (Sun, Mei)[ 1 ]; Hower, JC (Hower, James C.)[ 3 ]; Mian, MM (Mian, Md Manik)[ 1 ]; Wu, D (Wu, Dun)[ 1,4 ]; Wang, RW (Wang, Ruwei)[ 1 ]; Hu, GQ (Hu, Guangqing)[ 1,4 ]
2018-11
发表期刊Environmental Pollution
卷号242期号:Part B页码:1950-1960
文章类型期刊论文
摘要

Emission of hazardous trace elements (HTEs) from energy production is receiving much attention due to concerns about the toxicity to the ecosystem and human health. This study presented new field measurement data on the HTEs partitioning behavior and size-segregated elemental compositions of gaseous particular matter (PM) generated from a commercial circulating fluidized bed (CFB) power plant. Mineralogical and morphological characteristics of combustion ash and PM2.5 (particle diameter less than 2.5 μm) were determined by X-ray diffractometer (XRD) and scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS). Functional groups alteration during CFB combustion was characterized by Fourier transform infrared spectroscopy (FTIR). The presence of aliphatic hydrogen at 2910 cm−1 and 2847 cm−1 in the PM2.5 suggested that the aliphatic carbon-rich volatiles were absorbed on the fine particles with large surface area. Fine fly ash (PM2.5) occurred as irregular glass particles or/and as unburned carbon. The typical irregular particles were mainly composed of Al-Si-Ca or Al-Si-Fe phases. The enrichment behavior of HTEs was determined for the airborne size-segregated particular matter. Elemental occurrences, combustion temperature, unburnt carbon, and limestone additives during CFB combustion were critical in the transformation behavior of HTEs. The total potentially mobile pollutants that exit the CFB power plant every year were estimated as follows: 0.22 tons of Cr, 0.12 tons of Co, 0.73 tons of Ni, 0.04 tons of As, 0.07 tons of Se, 3.95 kg of Cd, and 3.34 kg of Sb.

关键词Circulating Fluidized Bed Hazardous Trace Elements Fine Particles Transformation Behavior
DOI10.1016/j.envpol.2018.07.066
收录类别SCI
语种英语
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9567
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Liu, GJ (Liu, Guijian)[ 1,2 ]
作者单位1.CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei,Anhui, 230026, China;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shaanxi, 710075, China;
3.University of Kentucky, Center for Applied Energy Research, 2540 Research Park Drive, Lexington, KY, 40511, United States;
4.Exploration Research Institute, Anhui Provincial Bureau of Coal Geology, Hefei, Anhui, 23008, China
推荐引用方式
GB/T 7714
Fu, B ,Liu, GJ ,Sun, M ,et al. Emission and transformation behavior of minerals and hazardous trace elements (HTEs) during coal combustion in a circulating fluidized bed boiler[J]. Environmental Pollution,2018,242(Part B):1950-1960.
APA Fu, B .,Liu, GJ .,Sun, M .,Hower, JC .,Mian, MM .,...&Hu, GQ .(2018).Emission and transformation behavior of minerals and hazardous trace elements (HTEs) during coal combustion in a circulating fluidized bed boiler.Environmental Pollution,242(Part B),1950-1960.
MLA Fu, B ,et al."Emission and transformation behavior of minerals and hazardous trace elements (HTEs) during coal combustion in a circulating fluidized bed boiler".Environmental Pollution 242.Part B(2018):1950-1960.
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