Haim Cohen
University of Ariel, Israel
Title: Coal Ash as an Efficient Chemical Fixation Reagent and Scrubber for Toxic Chemical Wastes and It's Incorporation in Industrial Concrete for Civil Engineering Projects
Biography
Biography: Haim Cohen
Abstract
The fly ashes produced in Israel are very basic (high CaO content) resulting in it's potential utilization as a chemical scrubber for acidic wastes. Also the small ash particles have a large surface area and can serve as an excellent adsorption material for trace elements. The potential of bituminous coal fly ashes to fixate toxic acidic sludges and wastes from the chemical industry has been studied. The wastes studied were from the phosphate industry, from regeneration processes of engine oils and from quarries. It was found that Class F coal fly ash is capable to serve as an excellent chemical scrubber and fixation reagent for acidic wastes containing a variety of trace elements. Furthermore due to the pozzolanic properties of the fly ash it was observed that the scrubbed product can serve as a partial substitute to cement and aggregates in industrial concrete. The mechanical properties and the leaching rate of toxic elements from the product are within the Israeli and European standards of concrete products.
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