Control of Emissions from Combustion of Cesium-Contaminated Biomass via Sorbent Injection
Citation:
Lemieux, P., S. Lee, Bill Linak, AND L. Virtaranta. Control of Emissions from Combustion of Cesium-Contaminated Biomass via Sorbent Injection. Presented at EPA International Decontamination Research and Development Conference, Norfolk, VA, November 19 - 21, 2019.
Impact/Purpose:
This Presentation at 2019 EPA International Decontamination Research and Development Conference; Norfolk, VA; November 19-21, 2019 will cover a series of experiments that was performed to investigate how well the use of in-furnace kaolinite sorbent injection captured Cs emissions from combustors. The experiments were performed in a rotary kiln incinerator simulator firing pelletized biomass fed into the rotating drum section of the combustor.
Description:
In the aftermath of a wide-area radiological contamination incident, there is the potential for the generation of significant quantities of contaminated biomass waste. For example, the 2011 nuclear power plant accident at the Fukushima Daiichi plant in Japan resulted in an estimated 7.8 million cubic meters of combustible waste, most of which was biomass. In these experiments, the biomass material was doped with non-radioactive Cs in the form of aqueous CsCl (cesium chloride). A MOUDI spell out impactor was used as the primary sampling device, where success of capture was assessed by whether the Cs predominated in the smaller-particle-size impactor stages or whether the Cs was caught on the impactor stages corresponding to the larger sorbent particle size, an indication that the Cs was associated with the sorbent particles. The larger particle size would be more amendable to capture by a particulate matter filtration system.