Potential of Hazardous Waste Encapsulation in Concrete Compound Combination with Coal Ash and Quarry Fine Additives.
Coal power plants are producing huge amounts of coal ash that may be applied to a variety of secondary uses. Class F fly ash may act as an excellent scrubber and fixation reagent for highly acidic wastes, which might also contain several toxic trace elements. This paper evaluates the potential of using Class F fly ashes (<20% CaO), in combination with excessive fines from the limestone quarry industry as a fixation reagent. The analysis included leaching experiments (EN12457-2) and several analytical techniques (ICP, SEM, XRD, etc.), which were used in order to investigate the fixation procedure. The fine sludge is used as a partial substitute in concrete that can be used in civil engineering projects, as it an environmentally safe product.
Biological Chemistry Department, Ariel University Samaria , Ariel 40700, Israel.|Department of Chemistry and the Institute of Nanotechnology, Bar-Ilan University , Ramat-Gan 5290002, Israel.
Roy Nir
RN
Lieberman
Samaria and the Jordan Rift regional R& D Center , Ariel 40700, Israel.
Yaakov
Y
Anker
Institute of Environmental Assessment and Water Research (IDAEA) , Consejo Superior de Investigaciones Cientificas (CSIC), Barcelona 08034, Spain.
Oriol
O
Font
Institute of Environmental Assessment and Water Research (IDAEA) , Consejo Superior de Investigaciones Cientificas (CSIC), Barcelona 08034, Spain.
Xavier
X
Querol
Department of Chemistry and the Institute of Nanotechnology, Bar-Ilan University , Ramat-Gan 5290002, Israel.
Yitzhak
Y
Mastai
Department of Chemical Engineering, Ariel University Samaria , Ariel 40700, Israel.
Yaniv
Y
Knop
Biological Chemistry Department, Ariel University Samaria , Ariel 40700, Israel.|Chemistry Department, Ben-Gurion University of the Negev , Beer-Sheva 8410501, Israel.
Haim
H
Cohen
D002119:Calcium Carbonate; D060729:Coal Ash / Q000032:analysis; D006256:Hazardous Waste; D006801:Humans; D008855:Microscopy, Electron, Scanning; D011210:Power Plants; D012722:Sewage; D018505:Waste Management / Q000379:methods; D014866:Waste Products; D014961:X-Ray Diffraction
D060729:Coal Ash; D006256:Hazardous Waste; D012722:Sewage; D014866:Waste Products; D002119:Calcium Carbonate