Stabilization of As, Cr, Cu, Pb and Zn in soil using amendments – A review

Kumpienė, Jūratė; Lagerkvist, Anders; Maurice, Christian

doi:10.1016/j.wasman.2006.12.012

Cited by 1,413 publications

(707 citation statements)

References 108 publications

(164 reference statements)

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“…Furthermore, the observed differences found in the pH values of soil and peat (Table 1) may have influenced the toxic mineral uptake, given that substrate pH affects differently the solubility and availability of the elements, as commonly known (e.g. Kumpiene et al 2008;Zeng et al 2011).…”

Section: Trace Metal Content In Vegetables Edible Portionsmentioning

confidence: 99%

Soilless system on peat reduce trace metals in urban-grown food: unexpected evidence for a soil origin of plant contamination

Pennisi

Orsini

Gasperi

et al. 2016

Agron. Sustain. Dev.

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Urban horticulture is increasingly popular for social and economic benefits. However, edible urban crops may be contaminated by airborne pollutants, thus leading to serious health risks. Therefore, a better understanding of contamination risks of urban cultivation is needed in order to define safe practices. In particular, whereas it is commonly accepted that the contamination of urban-grown food comes from airborne pollutants, little is known on a possible contamination by soils. Here, we studied trace metal risk in horticultural crops grown in an experimental urban allotment garden in Bologna, Italy. Seven experiments were conducted between June and November 2015 on tomato, sweet basil, onion, lettuce, kale, bulb fennel and radish. Treatments included two growing systems, soil and soilless, and two fertilization managements, mineral and organic. Trace metal concentrations were measured in soils, substrates and edible plant tissues. We identified preferentially translocated metals by partitioning analysis of tomato, sweet basil and kale. Results showed that crops grown in a soilless system have a lower metal content of −70 % for Cr, −61 % for Cu, −45 % for Cd and −81 % for Ni, compared with those grown in soil. This finding demonstrates that the major contamination risk in an urban area is unexpectedly related to soil pollution.

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Section: Trace Metal Content In Vegetables Edible Portionsmentioning

confidence: 99%

Soilless system on peat reduce trace metals in urban-grown food: unexpected evidence for a soil origin of plant contamination

Pennisi

Orsini

Gasperi

et al. 2016

Agron. Sustain. Dev.

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“…In particular, detailed knowledge is needed about the immobilizing mechanisms involved and how they might change with time. Reviews on chemical stabilization of soils highlight the need for long-term field studies (Cundy et al, 2008;Komarek et al, 2013;Kumpiene et al, 2008). In this work we used a combination of batch experiments, geochemical modeling and EXAFS spectroscopy to investigate the long-term performance of ZVI in soils contaminated with copper or arsenic.…”

Section: Indicated Thatmentioning

confidence: 99%

Immobilization of Cu and As in two contaminated soils with zero-valent iron – Long-term performance and mechanisms

Tiberg

Kumpienė

Gustafsson

et al. 2016

Applied Geochemistry

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Immobilization of trace elements in contaminated soils by zero-valent iron (ZVI) is a promising remediation method, but questions about its long-term performance remain unanswered. To quantify immobilization and predict possible contaminant remobilization on long timescales detailed knowledge about immobilization mechanisms is needed. This study aimed at assessing the long-term effect of ZVI amendments on dissolved copper and arsenic in contaminated soils, at exploring the immobilization mechanism(s), and at setting up a geochemical model able to estimate dissolved copper and arsenic under different scenarios.Samples from untreated and ZVI-treated plots in two field experiments where ZVI had been added 6 and 15 years ago were investigated by a combination of batch experiments, geochemical modeling and extended X-ray absorption fine structure (EXAFS) spectroscopy.Dissolved copper and arsenic concentrations were described by a multisurface geochemical model with surface complexation reactions, verified by EXAFS. The ZVI remained "reactive" after 6-15 years, i.e. the dissolved concentrations of copper and arsenic were lower in the ZVI-treated than in the untreated soils. There was a shift in copper speciation from organic matter complexes in the untreated soil to surface complexes with iron (hydr)oxides in the ZVI-treated soil. The pH value was important for copper immobilization and ZVI did not have a stabilizing effect if pH was lower than about 6. Immobilization of arsenic was slightly pH-dependent and sensitive to the competition with phosphate. If phosphate was ignored in the modeling, the dissolution of arsenate was greatly underestimated.

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“…Thus, these two types of land use change may lead to soil acidification, which may increase the available heavy metal fractions in the soil and increase environmental risk. Kumpiene et al (2008) concluded that leaching of Cu, Zn and Pb was strongly pH dependent, with lower mobility in neutral to slightly alkaline conditions. Changes in soil profile total heavy metals are presented in Figs.…”

Section: Resultsmentioning

confidence: 99%

Occurrence and distribution of heavy metals and tetracyclines in agricultural soils after typical land use change in east China

Pan

Chen

et al. 2013

Environ Sci Pollut Res

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Land use in east China tends to change from paddy rice to vegetables or other high-value cash crops, resulting in high input rates of organic manures and increased risk of contamination with both heavy metals (HMs) and antibiotics. This investigation was conducted to determine the accumulation, distribution and risks of HMs and tetracyclines (TCs) in surface soils and profiles receiving different amounts of farmyard manure. Soil samples collected from suburbs of Hangzhou city, Zhejiang province were introduced to represent three types of land use change from paddy rice to asparagus production, vineyards and field mustard cultivation, and divided into two portions, one of which was air-dried and sieved through 2-, 0.3-and 0.149-mm nylon mesh for determination of pH and heavy metals. The other portion was frozen at −20°C, freeze-dried and sieved through a 0.3-mm nylon mesh for tetracyline determination. HM and TC concentrations in surface soils of 14-year-old mustard fields were the highest with total Cu, Zn, Cd and ∑TCs of 50.5, 196, 1.03 mgkg −1 and 22.9 μgkg −1 , respectively, on average. The total Cu sequence was field mustard>vineyards>asparagus when duration of land use change was considered; oxytetracycline (OTC) and doxycycline were dominant in soils used for asparagus production; OTC was dominant in vineyards and chlortetracycline (CTC) was dominant in mustard soils. There were positive pollution relationships among Cu, Zn and ∑TCs, especially between Cu and Zn or Cu and ∑TCs. Repeated and excessive application of manures from intensive farming systems may produce combined contamination with HMs and TCs which were found in the top 20 cm of the arable soil profiles and also extended to 20-40 cm depth. Increasing manure application rate and cultivation time led to continuing increases in residue concentrations and movement down the soil profile.

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Stabilization of As, Cr, Cu, Pb and Zn in soil using amendments – A review

Cited by 1,413 publications

References 108 publications

Soilless system on peat reduce trace metals in urban-grown food: unexpected evidence for a soil origin of plant contamination

Soilless system on peat reduce trace metals in urban-grown food: unexpected evidence for a soil origin of plant contamination

Immobilization of Cu and As in two contaminated soils with zero-valent iron – Long-term performance and mechanisms

Occurrence and distribution of heavy metals and tetracyclines in agricultural soils after typical land use change in east China

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