Organic amendments potentially stabilize metals in smelter contaminated Arctic soils: An incubation study
| Autor: | Andrey L. Stepanov, Graeme Spiers, Sergey Koptsik, G. N. Koptsik, Polina Tregubova |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Environmental remediation Soil remediation engineering.material complex mixtures 03 medical and health sciences 0302 clinical medicine Nutrient Soil pH Biochar Carbon stock regulation lcsh:Social sciences (General) lcsh:Science (General) Multidisciplinary Soil carbon 030104 developmental biology Heavy metals Environmental chemistry Soil water Smelting engineering Environmental science lcsh:H1-99 Fertilizer 030217 neurology & neurosurgery lcsh:Q1-390 Research Article |
| Zdroj: | Heliyon Heliyon, Vol 7, Iss 1, Pp e06022-(2021) |
| ISSN: | 2405-8440 |
| Popis: | The long-term emission impacts of the nickel processing industry in the Kola Peninsula, the largest source of sulfur dioxide and heavy metals emissions in Northern Europe, have created vast technogenic barrens near the mineral industry complexes. The pace of rehabilitation using the improved remediation technologies to enhance sustainable environmental management and regional economic development is of crucial social and economic importance. In a 120-day incubation experiment, we evaluated the prospects for the restoration of two soils at different degradation stages via carbon pool regulation comparing to mineral ameliorants – NPK fertilizer, and liming agent. Organic additives used included a humic preparation based on an alkaline brown coal extract, wood-derived biochar, and peat-derived gel, supplied by mycorrhizae fungi. The results demonstrate that the selected organic amendments are suitable for restoration of acidic metal contaminated soils. Specifically, the treatments provided a measurable increase in soil carbon content, a marked decrease in acidity, a decrease in extractable metal contents, together with an enhanced nutrient uptake and vegetative growth. A stabilization effect increased from biochar to peat-gel, liming agent and humic preparation, with an accompanying increase in soil pH. Although biochar showed a reduced ability to metal stabilization, the associated treatments were the most productive. The most effective amendments in multi-metallic contaminated soils need to be able to stabilize bioavailability of metals, adjust pH to the optimum for plant growth, and regulate nutrient consumption. soil remediation, heavy metals, carbon stock regulation. |
| Databáze: | OpenAIRE |
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