Biochar addition to an arsenic contaminated soil increases arsenic concentrations in the pore water but reduces uptake to tomato plants (Solanum lycopersicum L.)

Beesley, Luke; Marmiroli, Marta; Pagano, Luca; Pigoni, Veronica; Fellet, Guido; Fresno, Teresa; Vamerali, Teofilo; Bandiera, Marianna; Marmiroli, Nelson

doi:10.1016/j.scitotenv.2013.02.047

Cited by 234 publications

(79 citation statements)

References 41 publications

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“…The As mobilization was the result of soil pH increase due to the application of biochar. Similar results were obtained by Beesley et al ( 2013 ); however, As plant uptake was reduced and toxicity-transfer risk was negligible. Leaching therefore appears to be the most probable immediate consequence of biochar addition to As-contaminated soils.…”

Section: Riskssupporting

confidence: 86%

Phytoremediation and Biochar Application as an Amendment

Evangelou

Fellet

et al. 2014

Phytoremediation

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Section: Riskssupporting

confidence: 86%

Phytoremediation and Biochar Application as an Amendment

Evangelou

Fellet

et al. 2014

Phytoremediation

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“…Beesley et al (2010Beesley et al ( , 2013) have reported increased Cu and As availability in soil amended with BCs derived from hardwoods and orchard prunings; Uchimiya et al (2010) suggested that this could be due to a mobilisation of soil-retained metals by dissolved organic C (DOC). Mobilisation of heavy metals is therefore another potential threat to plant and animal health.…”

Section: Mobilisation Of Heavy Metals In Soilsmentioning

confidence: 99%

Crop response to soils amended with biochar: expected benefits and unintended risks

et al. 2017

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Biochar (BC) from biomass waste pyrolysis has been widely studied due to its ability to increase carbon sequestration, reduce greenhouse gas emissions, and enhance both crop growth and soil quality. This review summarises the current knowledge of BC production, characterisation, and types, with a focus on its positive effects on crop yield and soil properties vs the unintended risks associated with these effects. Biochar-amended soils enhance crop growth and yield via several mechanisms: expanded plant nutrient and water availability through increased use efficiencies, improved soil quality, and suppression of soil and plant diseases. Yield response to BC has been shown to be more evident in acidic and sandy soils than in alkaline and fine-textured soils. Biochar composition and properties vary considerably with feedstock and pyrolysis conditions so much that its concentrations of toxic compounds and heavy metals can negatively impact crop and soil health. Consequently, more small-scale and greenhouse-sited studies are in process to investigate the role of BC/soil/crop types on crop growth, and the mechanisms by which they influence crop yield. Similarly, a need exists for long-term, field-scale studies on the effects (beneficial and harmful) of BC amendment on soil health and crop yields, so that production guidelines and quality standards may be developed for BCs derived from a range of feedstocks.

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“…Namgay et al (2010) reported that the concentrations of Cd, As and Pb in maize shoots decreased after biochar application. Beesley et al (2013) reported interesting results, finding that As can increase in soil pore water after biochar addition, but transfer to the plant be reduced. This would imply that at least some biochars could pose no risk of increasing heavy metals in plants and hence are safe in terms of food chain transfer, but leaching of As to nearby waters must be considered.…”

Section: Mechanism Of Interaction Between Biochar and Heavy Metalsmentioning

confidence: 99%

Use of phytoremediation and biochar to remediate heavy metal polluted soils: a review

et al. 2014

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Abstract. Anthropogenic activities are resulting in an increase of the use and extraction of heavy metals. Heavy metals cannot be degraded and hence accumulate in the environment, having the potential to contaminate the food chain. This pollution threatens soil quality, plant survival and human health. The remediation of heavy metals deserves attention, but it is impaired by the cost of these processes. Phytoremediation and biochar are two sound environmental technologies which could be at the forefront to mitigate soil pollution. This review provides an overview of the state of the art of the scientific research on phytoremediation and biochar application to remediate heavy-metalcontaminated soils. Research to date has attempted only in a limited number of occasions to combine both techniques, however we discuss the potential advantages of combining both, and the potential mechanisms involved in the interaction between phytoremediators and biochar. We identified specific research needs to ensure a sustainable use of phytoremediation and biochar as remediation tools.

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Biochar addition to an arsenic contaminated soil increases arsenic concentrations in the pore water but reduces uptake to tomato plants (Solanum lycopersicum L.)

Cited by 234 publications

References 41 publications

Phytoremediation and Biochar Application as an Amendment

Phytoremediation and Biochar Application as an Amendment

Crop response to soils amended with biochar: expected benefits and unintended risks

Use of phytoremediation and biochar to remediate heavy metal polluted soils: a review

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