Laboratory Study on Mercury Release of the Gypsum from the Mercury Coremoval Wet Flue Gas Desulfurization System with Additives | |
Qingfeng Wang; Yue Liu; Zhongbiao Wu | |
2018 | |
发表期刊 | Energy Fuels |
卷号 | 32期号:2页码:1005-1011 |
摘要 | In this study, the mercury release of the gypsum from the mercury coremoval wet flue gas desulfurization (FGD) process with post-thermal treatment or open-stack disposal was investigated experimentally. The results indicated that the aqueous-phase oxidized mercury could be efficiently captured and stored in the solid-phase gypsum by using the additives like NaHS, DTCR, and TMT. However, it could be found that the thermal stability of the mercury species on the resulting gypsum decreased significantly under typical wallboard-manufacturing conditions. Especially, 92.8% of mercury was released from the DTCR-treated sample. The following thermal decomposition tests further confirmed this result. The mercury ions in DTCR-Hg compounds were linked to more sulfur atoms, which were ready to transfer electrons to nearby mercury ions during heat treatment, resulting in its lower stability. It could be also seen that the thermal stabilities of mercury species decreased with an increasing amount of additives. Moreover, the mercury leaching tests showed that additives addition could lead to an evident increase in the mercury leaching content, and the mercury leaching content increased on the order of Hg-TMT < beta-HgS < Hg-DTCR All these results suggested that more attention should be paid toward the mercury release during the post-treatment and disposal of wet FGD gypsum from the mercury coremoval wet FGD system by using additives. |
收录类别 | SCI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.gyig.ac.cn/handle/42920512-1/8681 |
专题 | 矿床地球化学国家重点实验室 |
作者单位 | 1.Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, P. R. China 2.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, P. R. China 3.Department of Environmental Engineering, Zunyi Normal University, Zunyi 563006, P.R. China |
推荐引用方式 GB/T 7714 | Qingfeng Wang,Yue Liu,Zhongbiao Wu. Laboratory Study on Mercury Release of the Gypsum from the Mercury Coremoval Wet Flue Gas Desulfurization System with Additives[J]. Energy Fuels,2018,32(2):1005-1011. |
APA | Qingfeng Wang,Yue Liu,&Zhongbiao Wu.(2018).Laboratory Study on Mercury Release of the Gypsum from the Mercury Coremoval Wet Flue Gas Desulfurization System with Additives.Energy Fuels,32(2),1005-1011. |
MLA | Qingfeng Wang,et al."Laboratory Study on Mercury Release of the Gypsum from the Mercury Coremoval Wet Flue Gas Desulfurization System with Additives".Energy Fuels 32.2(2018):1005-1011. |
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