Abstract: A composition that is useful in land surface applications is produced from ash resulting from burning at least one of lignocellulosic filter cake and lignocellulosic syrup co-products of a lignocellulosic biomass fermentation process for production of ethanol. The composition can be applied to surfaces such as fields, roads, and landfills as a stabilizer and/or fertilizer. Burning of material to produce the ash provides thermal energy.