Abstract: A system and method for treating unmarketable fly ash and improve its properties as an additive for concrete is disclosed. The method includes the steps of creating a gas stream containing ionized air through a plasma reactor and exposing an amount of fly ash containing carbon to the ionized air while in the reactor. The exposure of the carbon to the ionized air promotes the attachment of the ions to the carbon to reduce the adsorption capacity of the carbon.
Abstract: A system and method for treating unmarketable fly ash and improve its properties as an additive for concrete is disclosed. The method includes the steps of providing a gas stream containing ionized air (34), and an amount of fly ash (10) containing carbon having an adsorption capacity. The fly ash (10) is then exposed to the gas stream (34) to expose the carbon to the ionized air to promote the attachment of the ions to the carbon to reduce the adsorption capacity of the carbon.
Abstract: Treated carbon-containing fly ash with reduced surfactant-adsorbing capacity is prepared by processing involving contacting the fly ash with ionized gas prepared from a humid gas feed, such as humid air. Treated fly ash with reduced ammonia content is prepared by processing involving contacting the fly ash with ionized gas prepared from a humid gas feed, such as humid air, or exposing the fly ash to microwave radiation or ultraviolet radiation.
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