Related Experiment Video
Updated: Jul 11, 2026

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
A role for adsorption in lead leachability from MSWI bottom ASH
F R Chaspoul1, M F Le Droguene, G Barban
1Laboratoire de Prévention des Risques et des Nuisances Technologiques - EA 1784, Faculté de Pharmacie, Université de la Méditerranée, 27 bd Jean Moulin, 13385 Marseille cedex 05, France.
Abstract:
Owing to its high porosity and large surface area, bottom ash from municipal solid waste incineration (MSWI) has been previously suggested as an adsorbent for removing heavy metals from wastewater. However, since lead leachability is not clearly understood, this study reports the behavior of lead for leaching from MSWI bottom ash, classified as NH, W and H. Leaching kinetics show a sorption/desorption mechanism producing equilibrium in the leachates. Adsorption experiments reveal a similarly high saturation coverage for NH, W and H bottom ash, demonstrating a considerable adsorption capacity. Adsorption mainly reflects an ion exchange mechanism. Successive leaching experiments prove that at least two species of lead can be stripped from bottom ash: one is Pb(OH)(4)(2-) and the second, identified by XAS, is a lead complex sorbed on the surface of Fe colloïd or FeOOH polymers.
Related Concept Videos
Microbial Leaching
Microbial Bioremediation of Uranium
Sample Preparation for Analysis: Advanced Techniques
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
Acid Mine Drainage
Factors Affecting Solubility
Extraction: Advanced Methods

