How can sorbent technology be utilized to control emission and leaching of CCA metals during incineration?
In recent years, research studies have shown the potential of injecting mineral sorbents (e.g. lime, limestone or clay) into combustion system for controlling arsenic. Arsenic captured on the sorbent is transformed into non-leachable compounds, such as calcium arsenate (Ca3As2O8), that become suitable for landfill disposal. Some of the sorbent materials identified in those studies have been used in flue gas treatment and in other industries (such as power plants and waste incinerators). These facilities can be a potential option for thermally processing CCA treated wood. In addition, mineral materials including alumina, calcium hydroxide and ferric hydroxide have also been evaluated for removing arsenic in the aqueous systems. Among the various potential materials, evaluation needs to be carried out to determine the most efficient and cost-effective candidate.
Related Questions
- Are the environmental impacts from landfills (leaching, gases) not easier to control in comparison to the more complex technology of co-processing?
- How can sorbent technology be utilized to control emission and leaching of CCA metals during incineration?
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