RUTTENS, A.; ADRIAENSEN, K.; MEERS, E.; DE VOCHT, A.; GEEBELEN, W.; CARLEER, R.; MENCH, Michel; VANGRONSVELD, A.

doi:10.1016/j.envpol.2009.12.037

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RUTTENS, A.
Centre for Environmental Sciences

ADRIAENSEN, K.
Centre for Environmental Sciences

MEERS, E.
Universiteit Gent = Ghent University = Université de Gand [UGENT]

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Article de revue

Ce document a été publié dans

Environmental Pollution. 2010, vol. 158, n° 5, p. 1428-1434

Elsevier

Résumé en anglais

A soil column leaching experiment was used to gain insight into the long-term metal immobilization capacity of cyclonic ashes (CAH) compared to lime (LIME). Twenty six years of rainfall were simulated. Initially, all amended soils were brought to an equal soil pH. This was done to obtain optimal conditions for the detection of metal immobilization mechanisms different from just a pH effect. During the simulation period, soil pH in all treatments decreased in parallel. However, the evolution of metal mobility and phytoavailability showed a clearly distinct pattern. The strong reduction in metal immobilizing efficiency observed in the lime treatment at the end of the simulation period was much less pronounced, or even absent, in the CAH treatments. Moreover, metal accumulation in plants grown on the CAH amended soil was significantly lower compared to the untreated and the lime treated soil. CAH + SS treatment delivered the strongest reductions in metal mobility and bioavailability. In a soil column leaching experiment, simulating 26 years of rainfall, application of cyclonic ashes resulted in a more durable metal immobilization compared to lime.< Réduire

Mots clés

SOIL AMENDMENTS

LIME

CENDRE CYCLONIQUE

Mots clés en anglais

METAL IMMOBILIZATION

CYCLONIC ASHES

STEEL SHOTS

LONG-TERM SUSTAINABILITY