Evaluation of leaching and ecotoxicological properties of sewage sludge–fly ash mixtures

Effects of field metal-contaminated soils submitted to phytostabilisation and fly ash-aided phytostabilisation on the avoidance behaviour of the earthworm Eisenia fetida

“…Regarding the first point, the contaminants content of ashes could be incriminated. Indeed, the toxic and mutagenic effects of high concentrations of FAs on different tests organisms (e.g., Ali et al, 2004;Chakraborty and Mukherjee, 2009;Manerikar et al, 2008;Papadimitriou et al, 2008;Van Maanen et al, 1999;Voelkel et al, 2003) would be linked, according to authors, to organic contaminants or TEs present in such FAs. In our study, both ashes contained TEs (Table 1).…”

Removal of Toxic Materials from Aqueous Streams

“…The strategy of cement stabilization of toxic concentrates is the replacement of the hydration water. l Sewage sludge, bearing coliforms, and toxic metals, with fly ash and lime [258,259]. For both these issues, there exist numerous standardized tests, so each time the final product is fully characterized [254].…”

Co-combustion of coal and sewage sludge: Chemical and ecotoxicological properties of ashes

“…Cyclone ashes seemed to be more problematic due to the high pH values and contamination with steel corrosion products. Due to their properties, the reuse of these ashes needs a previous evaluation of their chemical and ecotoxic properties [11,12,10,13,14].…”