Long-term performance of stabilised/solidified polluted sediment in terms of metal leachability and matrix characterization

Long-term performance of stabilised/solidified polluted sediment in terms of metal leachability and matrix characterization

Blog Article

Sustainable and economically feasible polluted sediment treatment is gaining more and more importance.Stabilization/solidification (S/S) technologies are widely used for treatment of sediment and possibilities of using low-cost and readily available materials and binders are increasingly being examined.This work is concerned with aquairing more data about long-term performance KOR-CHEM of this kind of treatment in therms of metal leaching and microstructural cnaracterization when treating sediment with fly ash and lime.Extraction potential of metals and the effectiveness of the S/S treatment applied, together with compliance with national legislative, were performed by using Toxicity Characteristic Leaching Procedure - TCLP and The German standard leaching test - DIN 3841-4 S4.

Leaching test results showed that the applied S/S treatment was effective in immobilizing metals even after seven years of aging.Scanning electron microscope (SEM) and X-ray diffraction analysis confirmed that pozzolanic reactions took place during 28 days and continued along S/S mixture maturation.Compressive strength measurement further proved the treatment efficacy in terms of obtained matrix stability, which enables their subsequent use.It can be concluded that the S/S technique, ROSE ABSOLUTE with the usage abundant materials has a significant potential for treatment of metal polluted sediment.