Biosolids influence in metals bioaccumulation in barley grains.

Abstract

The level of heavy metals from the cultivated lands depends on the anthropogenous activities of the region, mining activities, rhythm and duration of fertilizer with anaerobic stabilized wastewater sludge, known as biosolids. The increase of heavy metlas concentration from soil determines the increase of bioaccumulation in grains, as in Hordeum vulgare (barley) species. Repeatedly adding organic matter as fertilizer (containing heavy metals) to the land can increase Cd and Pb ions bioavailability with 28-32% and for Zn up to 58%. Adding Tuf-Aln pillared volcanic tuff to biosolids determines a decrease of bioavailability compared with the bioaccumulation in crops from an untreated polluted soil.