CHARACTERIZATION OF COAL COMBUSTION BY-PRODUCTS FOR THE RE-EVOLUTION OF MERCURY INTO ECOSYSTEMS

Schwalb, A.M. ; Withum, J.A. ; Statnick, R.M.

Consol Energy Inc. (United States)

关键词: By-Products;    Leaching;    Combustion;    Us Epa;    01 Coal, Lignite, And Peat;   

DOI  :  10.2172/840493
RP-ID  :  NONE
RP-ID  :  FC26-00NT40906
RP-ID  :  840493

美国|英语

来源: UNT Digital Library

【 摘 要 】

EPA and state environmental agencies are suggesting that mercury (Hg) in coal combustion by-products is re-emitted into local ecosystems by additional processing to final products (i.e., wallboard, etc.), by dissolution into groundwater, or by reactions with anaerobic bacteria. This perception may limit the opportunities to use coal combustion by-products in recycle/reuse applications. In this program, CONSOL Energy is conducting a comprehensive sampling and analytical program to address this concern. If the results of this work demonstrate that re-emissions of Hg from waste disposal and by-product utilization are over-stated, additional regulations regarding coal combustion, waste disposal, and waste material utilization will not be required. This will result in continued low energy cost that is beneficial to the national economy and stability of local economies that are dependent on coal. In this quarter, fly ash and FGD slurry samples from five coal-fired utilities were collected for leaching; four samples were leached.