Mercury transportation in soil via using gypsum from flue gas desulfurization unit in coal-fired power plant

查看全文 作　　者：Kelin [1]Wang;William [1]Orndorff;Yan [1]Cao;Weiping [1]Pan

机构地区：[1]Institute for Combustion Science and Environmental Technology, Western Kentucky University

出　　处：《Journal of Environmental Sciences》索引2013年第25卷第9期,共7页

基　　金：Financial support for this project was provided by the U.S.Department of Agriculture (No. 6445-12630-003-00D) 摘　　要：The mercury flux in soils was investigated, which were amended by gypsums from flue gas desulphurization (FGD) units of coal- fired power plants. Studies have been carried out in confined greenhouses using FGD gypsum treated soils. Major research focus is uptakes of mercury by plants, and emission of mercury into the atmosphere under varying application rates of FGD gypsum, simulating rainfall irrigations, soils, and plants types. Higher FGD gypsum application rates generally led to higher mercury concentrations in the soils, the increased mercury emissions into the atmosphere, and the increased mercury contents in plants (especially in roots and leaves). Soil properties and plant species can play important roles in mercury transports. Some plants, such as tall fescue, were able to prevent mercury from atmospheric emission and infiltration in the soil. Mercury concentration in the stem of plants was found to be increased and then leveled off upon increasing FGD gypsum application. However, mercury in roots and leaves was generally increased upon increasing FGD gypsum application rates. Some mercury was likely absorbed by leaves of plants from emitted mercury in the atmosphere. 关键词：烟气脱硫装置脱硫石膏土壤性质汞排放燃煤电厂运输植物吸收大气排放

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Mercury transportation in soil via using gypsum from flue gas desulfurization unit in coal-fired power plant

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