Estudio De La Lixiviacion De Cadmio, Mercurio Y Plomo en Suelos Derivados De Cenizas Volcanicas

Pinochet, T Dante; Aguirre, Abanto; Quiroz, R Eduardo

doi:10.4206/agrosur.2002.v30n1-07

Cited by 2 publications

(2 citation statements)

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“…An important input pathway is anthropogenic activities, such as disposal of industrial and hazardous residues, mining activities, incidental accumulations, industries atmospheric deposition, energy generation, and agricultural chemicals [2,3]. High proportion of the contamination is retained by soil particles, so that is why this system is considered a vulnerable environment to being contaminated [4]. In addition, there is an increasing interest in HM contamination as a result of a continuous accumulation on top soil, with elevated availability to organisms [5].…”

Section: Introductionmentioning

confidence: 99%

Comparative Use of Soil Organic and Inorganic Amendments in Heavy Metals Stabilization

Branzini

Zubillaga

2012

Applied and Environmental Soil Science

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Remediation strategies are capable to mitigate negative effects of heavy metals (HMs) on soils. The distribution of cooper (Cu), zinc (Zn), and chromium (Cr) was evaluated in a contaminated soil after adding biosolid compost (BC) and phosphate fertilizer (PF). A greenhouse assay and sequential extraction procedure were performed to determine the fractionation of HM in contaminated and remediated soil. In BC treatment, among 4 to 6% of Cu was associated with soil humic substances. Without amendments and with fertilizer application, Zn solubility increased by 15.4 and 8.4%, respectively, with experiment time. Although Cr was significantly adsorbed to the inorganic fraction, with compost application there was a transfer to organic fraction. A single amendment application is not suitable for immobilizing all metals of concern, because there are diverse union's behaviors between HM and soil matrix. As the organic matter and phosphate fertilizer were effective in reducing mobility of Cu, the organic matter was more effective in the immobilization of Cr, and inorganic amendment induced the Zn precipitation, results from this pilot study suggest a combined use of these two amendments for soil remediation strategies. However, liming may be further needed to prevent soil acidification on longer time scales. Also, we propose the use of chemical and biological remediation strategies for potential improvement of effectiveness.

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Section: Introductionmentioning

confidence: 99%

Comparative Use of Soil Organic and Inorganic Amendments in Heavy Metals Stabilization

Branzini

Zubillaga

2012

Applied and Environmental Soil Science

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“…In addition, mining residues tend to modify contaminated soils changing their intrinsic properties producing several effects, such as: imbalance of essential nutrient content, disruption of biogeochemical cycles, low exchange capacity or low water retention (Puga et al, 2006). The presence of metals such as arsenic, cadmium, zinc, copper, chromium, manganese, mercury, lead and even cyanide species have confirmed detrimental effects on the chemical quality of soils (Alloway, 1995;Pinochet et al, 2002). Some technologies used in the remediation of metal contaminated soils are based on physical separation (gravity concentration, magnetic separation or electrostatic separation) or chemical extraction (acid or chelate extraction).…”

Section: Introductionmentioning

confidence: 99%

Metal Removal from Contaminated Soils Through Bioleaching with Oxidizing Bacteria and Rhamnolipid Biosurfactants

Diaz

Ranson

Dorta

et al. 2014

Soil and Sediment Contamination: An International Journal

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Estudio De La Lixiviacion De Cadmio, Mercurio Y Plomo en Suelos Derivados De Cenizas Volcanicas

Cited by 2 publications

References 0 publications

Comparative Use of Soil Organic and Inorganic Amendments in Heavy Metals Stabilization

Comparative Use of Soil Organic and Inorganic Amendments in Heavy Metals Stabilization

Metal Removal from Contaminated Soils Through Bioleaching with Oxidizing Bacteria and Rhamnolipid Biosurfactants

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