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RECORD NUMBER: 25 OF 44

OLS Field Name OLS Field Data
Main Title Permeability Properties of Fly Ash from Furnace Sorbent Injection Process.
Author Jozewicz, W. ; Gullett, B. K. ; Hueckel., T. ;
CORP Author Acurex Corp., Research Triangle Park, NC. ;Duke Univ., Durham, NC. Dept. of Civil and Environmental Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.;Illinois Dept. of Energy and Natural Resources, Springfield.
Publisher 1991
Year Published 1991
Report Number EPA-68-02-4701 ;EPA-68-D0-0141; EPA/600/D-91/170;
Stock Number PB91-226399
Additional Subjects Waste utilization ; Air pollution control ; Fly ash ; Land pollution control ; Hazardous materials ; Earth fills ; Injection ; Linings ; Mechanical properties ; Calcium hydroxides ; Permeability ; Chemical bonds ; Morphology ; Structural analysis ; Furnace Sorbent Injection ; Limestone Injection Multistage Burners
Holdings
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Status
NTIS  PB91-226399 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/26/1991
Collation 21p
Abstract
The paper discusses tests of the applicability of furnace sorbent injection (FSI) waste solids for use as synthetic waste landfill liners by measuring the mechanical strength and permeability of moisture-cured samples. FSI waste solids were received from the EPA-sponsored demonstration of limestone injection multistage burner (LIMB) technology at Ohio Edison's Edgewater power plant. The demonstration coal was about 3% sulfur, and the sorbent used was calcium hydroxide--Ca(OH)2--modified with lignosulfonate. Samples of FSI waste were moisture-cured and analyzed for formation of ettringite, which--in cementitious systems--can cause disruption of structure if formed after the cement paste has hardened. No ettringite was detected and mechanical strength, as measured by unconfined compressive strength, increased with longer moisture curing time. Permeability of moisture-cured samples decreased with increasing moisture curing time. The increase of mechanical strength and accompanying decrease of permeability are believed to be due to the effect of the formation of bonds between the fly ash and Ca(OH)2 with subsequent filling of intraparticle voids, evidenced by increasing specific surface area of FSI waste samples cured for long periods of time. Examination of morphology by SEM confirmed structure development.