Advanced Coal Conversion Solid Wastes: Waste‐Management Implications

Abstract

Characterization data are presented for solid wastes obtained from three advanced coal‐utilization processes and one conventional pulverized‐coal combustion process. Tables and figures summarize the data and compare the properties of the wastes. Based on the results, the impact of the advanced process wastes on the power‐production industry is examined and potentially useful waste‐management practices are evaluated. The evaluation indicated that it is possible to use conventional waste‐management technology to handle and dispose of most advanced process wastes. However, some of these wastes may present special problems. The utilization potentials of the advanced process wastes are also evaluated. It was found that some advanced process wastes may not be suitable for established fly ash uses such as cement replacement, but that they are acceptable for other uses such as fill materials, soil‐stabilization additives, and soil‐amendment activities.