Analysis of mercury species present during coal combustion by thermal desorption
نویسندگان
چکیده
منابع مشابه
Mercury from Coal Combustion
A 1997 study in Minnesota indicated a relationship between mercury deposition trends and regional coal combustion (as well as other possible sources) spanning a period of two centuries (Engstrom and Swain 1997). Sediment core sampling from rural lakes in eastern Minnesota indicated a growth in mercury deposited from the air since the first half of the 1800s, with the amount peaking in the 1960s...
متن کاملApplication of thermal desorption for the identification of mercury species in solids derived from coal utilization.
The speciation of mercury is currently attracting widespread interest because the emission, transport, deposition and behaviour of toxic mercury species depend on its chemical form. The identification of these species in low concentrations is no easy task and it is even more complex in coal combustion products due to the fact that these products contain organic and mineral matter that give rise...
متن کاملMercury compounds characterization by thermal desorption.
The ability to accurately determine metal mercury content and identify different mercury species in solid samples is essential for developing remediation and control strategies. The aim of the present study is to characterize mercury compounds based on thermal desorption. For this purpose a series of samples was prepared and the operational parameters-heating velocity, carrier gas-were optimize...
متن کاملAnalytical methods for mercury analysis in coal and coal combustion by-products
This review deals with the analysis of mercury present in different types of solid, liquid and gaseous samples involved in the coal combustion process, focusing on the specific characteristics of each type of sample and the problems typically associated with these products. The main aim of the paper is to describe the methods that, at the current stage of development, are preferable in each cas...
متن کاملThe Determination of Total Mercury in Coal and Coal Fly Ash Using Thermal Combustion and Amalgamation Coupled with Atomic Absorption
Coal-fired power plants are by far the largest source of mercury pollution in the US. Through the coal-combustion process, they emit approximately 50 tons of mercury particulates into the atmosphere every year (EPA, 2005 data). When the mercury falls back to earth it is deposited on the land and gets into the water ecosystem, where it is converted into the highly toxic organo mercury compound, ...
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ژورنال
عنوان ژورنال: Fuel
سال: 2010
ISSN: 0016-2361
DOI: 10.1016/j.fuel.2009.08.034