RUTTENS, Ann; MENCH, Michel; COLPAERT, J.V.; BOISSON, J.; CARLEER, R.; VANGRONSVELD, Jaco

doi:10.1016/j.envpol.2006.01.038

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RUTTENS, Ann
Hasselt University [UHasselt]

MENCH, Michel
Biodiversité, Gènes et Ecosystèmes [BioGeCo]

COLPAERT, J.V.
Hasselt University [UHasselt]

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Ce document a été publié dans

Environmental Pollution. 2006, vol. 144, n° 2, p. 524-532

Elsevier

Résumé en anglais

In a lysimeter set-up, compost addition to an industrial contaminated soil slightly reduced phytotoxicity to bean seedlings. The "Phytotoxicity Index" (on a scale from 1 to 4) decreased from 3.5 to 2.8. The same treatment also reduced metal accumulation in grasses: mean Zn, Cd and Pb concentrations decreased respectively from 623 to 135, from 6.2 to 1.3 and from 10.7 to < 6 mg kg(-1) dry weight. When combined with inorganic metal immobilizing amendments, compost had a beneficial effect on plant responses additional to the inorganic amendments alone. Best results were obtained when using compost (C) + cyclonic ashes (CA) + steel shots (SS). The "Phytotoxicity Index" decreased to 1.7, highest diversity of spontaneously colonizing plants occurred, and metal accumulation in grasses reduced to values for uncontaminated soils. Based on the first year evaluation, C + CA + SS showed to be an efficient treatment for amendment assisted phytostabilization of the contaminated Overpelt soil< Réduire

Mots clés

SOIL ADDITIVES

Mots clés en anglais

ZINC

CADMIUM

IN SITU IMMOBILIZATION

METAL PHYTOTOXICITY