Fixation and partitioning of heavy metals in slag after incineration of sewage sludge

Influence of thermal treatment on fixation rate and leaching behavior of heavy metals in soils from a typical e-waste processing site

“…Moreover, the incineration temperature did not obviously influence the leaching behavior of Pb. These results were similar to the results presented by [4], which indicated that high temperatures could not change the chemical speciation of Pb in sewage sludge. In addition, the concentrations of V and Sb in the TCLP leachates increased as the incineration temperature increased.…”

“…The instrument was calibrated using internal standards (0.05 mg/L of 4 ly. In addition, replicates of the 10% samples and standard reference materials (GBW07407 and GBW07429) were used or quality assurance and quality control purposes.…”

“…Hyks et al [11] observed that Cu and Pb leaching could decrease by one order of magnitude after the thermal treatment of municipal solid waste. A survey by Chen and Yan [4] showed that high incineration temperatures and residence times promoted the complete oxidation of metals, reduced the nonresidual fractions of metals and decreased the bioavailability of metals.…”

Effect of co-contaminated soil mixtures as fixed/fluidized bed media on pollutants emission under thermal treatment

“…The most detailed study of soil incineration process to date reached the goals of completely destroying the organic pollutants and considerably reducing the toxicity (Chen and Yan 2012). Moreover, incineration can be considered as a simple technique for energy production and can be used for almost of all combustible materials, with the advantages of being harmless and environmentally friendly (Eldabbagh et al 2005;Wu et al 2014).…”

“…Moisture content has a significant effect on metals concentration of the partitioning of residues. The maximum fixation rates for Cd, Cu, chromium (Cr), nickel (Ni), manganese (Mn), and Zn were achieved when the 55 % of moisture content of sludge was combusted (Chen and Yan 2012). Additionally, the results of thermodynamics calculation indicated that the moisture content influenced heavy metals behaviors during combustion which changed metal chloride forms to metal oxide forms .…”