Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Evaluation of Dewatering of Limestone Wet Scrubbing Process Sludges.
CORP Author West Virginia Univ., Morgantown. Coal Research Bureau.
Year Published 1973
Report Number EPA-EHSD-71-11; R2-73-262;
Stock Number PB-221 155
Additional Subjects ( Fly ash ; Materials recovery) ; ( Electric power plants ; Industrial waste treatment) ; ( Dewatering ; Fly ash) ; Feasibility ; Air pollution ; Limestone ; Sand filtration ; Coagulation ; Flocculating ; Vacuum filtration ; Settling ; Lagoons(Ponds) ; Pozzolans ; Aluminum ; Air pollution ; Sludge disposal ; Air pollution control ; Waste recycling
Library Call Number Additional Info Location Last
NTIS  PB-221 155 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 63p
The purpose of the study has been to investigate the potential use of wet-collected, limestone or dolomite-modified flyashes resulting from sulfur dioxide control methods. Specific areas under investigation have included dewatering, alumina leaching, and production of structural products by employing potential cementitious properties of the modified flyashes. Several methods of dewatering solid materials were applied on a bench scale to flyash from a coal-fired electric power plant. Porous-bed sand filtration, lagooning and possibly pressure filtration appear to hold the most promise. Aluminum extraction tests using sodium hydroxide, sodium carbonate and combinations of the two yielded less than 50 percent of the aluminum available in the leach liquor while structural materials testing indicated that there is insufficient free lime available in the modified ash to act as a suitable binding agent. (Modified author abstract)