Long-term distribution, mobility and plant availability of compost-derived heavy metals in a landfill covering soil

Businelli, Daniela; Massaccesi, Luisa; Said-Pullicino, Daniel; Gigliotti, Giovanni

doi:10.1016/j.scitotenv.2008.10.052

Cited by 89 publications

(52 citation statements)

References 23 publications

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“…These results are in disagreement with the results obtained by Han et al 42 and Zheng and Zhang 9 who report a redistribution of Cu from more labile to more stable forms in ME-spiked soils subjected to wet/dry conditions. Similarly, Businelli et al 43 observed a redistribution of metals with time from organically-bound to the residual fractions, particularly for Cu and Zn, in a compost amended landfill covering soil.…”

Section: Bcr Sequential Extractionmentioning

confidence: 78%

Leaching potential of metallic elements from contaminated soils under anoxia

Balint

Nechifor

Ajmone-Marsan

2014

Environ. Sci.: Processes Impacts

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Environmental ImpactThe higher frequency and intensity of extreme rainfall events, as well as the variations in precipitation patterns and intensities as a result of climate change may cause important shifts in soil hydrological regime. This could expose contaminated soils to significant variations in redox potentials possibly influencing metallic element behaviour and their potential transfer to other environmental compartments. This study shows that alternating soil redox conditions may enhance the release and redistribution of metals in more labile fractions. In particular, the presence of redox-sensitive minerals, such as chalcopyrite, in soils affected by mine tailings, could release significant amounts of Cu due to the alternating redox conditions and therefore have important environmental implications. Graphical abstractThe alternation of redox cycles may play a higher role in the release, leaching and redistribution of metallic elements from contaminated soils with respect to oxidizing and reducing conditions alone. AbstractUnderstanding metallic element (ME) behaviour in soils subjected to alternating redox conditions is of significant environmental importance, particularly for contaminated soils. Although variations in the hydrological status of soils may lead to the release of ME, redox-driven changes in ME dynamics are still not sufficiently understood. We studied the effects of alternating redox cycles 2 on the release, leaching and redistribution of Zn, Cu and Pb in metal mine-contaminated and noncontaminated soils by means of a column experiment. Although the release of Zn was promoted by the onset of reductive conditions, successive redox cycles favoured metal partitioning in less labile fractions limiting its further mobilization. The release of Cu in soil porewaters and redistribution in the solid phase towards more labile pools were strongly dependent on the alternation between oxidizing and reducing conditions. In contaminated soils, the presence of chalcopyrite could have determined the release of Cu under oxic conditions and its relative immobilization under subsequent anoxic conditions. The behaviour of Pb did not seem to be influence by redox status, although higher concentrations in the column leachates with respect to soil porewaters suggested that alternating redox conditions could nonetheless result in substantial mobilization. This study provides evidence that the alternation of soil redox conditions may play a more important role in determining the release and leaching of metallic elements from soils with respect to reducing or oxidizing conditions considered separately.

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Section: Bcr Sequential Extractionmentioning

confidence: 78%

Leaching potential of metallic elements from contaminated soils under anoxia

Balint

Nechifor

Ajmone-Marsan

2014

Environ. Sci.: Processes Impacts

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“…In this study, dry biomass of plants (wheat and maize) significantly increased in Cdcontaminated soil, which might be due to immobilization of Cd in amended soil (Tables 2, 3). Businelli et al (2009) reported reduction in the bioavailability of metals in soil amended with organic matter, while Rajaie et al (2006) reported highest metal availability in soil after addition of organic matter to soil. Bioavailable fraction of metals depends upon soil characteristics, climatic conditions, and the native microbial activity that converts compost and other organic material into mineral form (Clemente et al 2006).…”

Section: Tissue CD Concentration and Translocationmentioning

confidence: 96%

“…Bioavailable fraction of metals depends upon soil characteristics, climatic conditions, and the native microbial activity that converts compost and other organic material into mineral form (Clemente et al 2006). Moreover, the reduction in Cd concentration could have occurred due to progressive binding of Cd to added organic amendments which are known for numerous metalbinding sites (Wang and Staunton 2006;Sebastia et al 2008;Businelli et al 2009). In this study, addition of compost had the most promising effect on Cd stabilization as compared to BGS.…”

Section: Tissue CD Concentration and Translocationmentioning

confidence: 99%

Organic amendments: effects on cereals growth and cadmium remediation

Ahmad

Akhtar

Zahir

et al. 2014

Int. J. Environ. Sci. Technol.

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Cadmium (Cd) is one of the toxic metals that adversely affect plant growth. Organic amendments may not only enhance nutrient status of soil, but they may also form complexes with Cd and reduce its availability to plants. This experiment was conducted to determine whether organic amendments (compost and biogas slurry) could stabilize/extract Cd and alleviate the adverse effects of Cd on the growth of two cereals, wheat and maize. Organic amendments along with four varying levels of Cd (0, 5, 20, 50 mg kg -1 soil) were prepared with soil. Effect of these amendments on tolerance indices, root/shoot dry biomass, tissue Cd concentration, Cd uptake and translocation were studied. Biogas slurry caused maximum increase in tolerance indices of wheat and maize (100-112 and 117-133 %, respectively, as compared to control), whereas compost caused significant increase in their dry biomass. Negative correlation between root dry biomass of wheat (r = -0.37) and maize (r = -0.53) to Cd revealed its suppressive effects. Dry biomass of plant correlated with organic amendments in wheat (r = 0.83-0.98), whereas weak correlation was observed in maize (r = 0.30-0.40). Compost significantly reduced Cd uptake in wheat and maize; however, it increased Cd translocation in plants. Based on the results of this study, root was the major sink of Cd when soil was amended with or without organic amendments. Biogas slurry removed 97 % Cd from artificially polluted water after 13 h at pH 6. The additions of compost in soil and biogas slurry in wastewater are recommended to stabilize/extract Cd.

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“…Heavy metals in sludge causes biodegradation at the places where land is covered by vegetation [9,22]. The result of a study conducted by [2] to find the effect of crude oil contaminated soil on cowpea seedlings shows that the crude oil induced an environmental stress on the seedlings because of the rise in free sugar, total protein and amino acids and decreased the chlorophyll content of the leaves.…”

Section: Some Problems Relating To Oily Sludgementioning

confidence: 99%