Effect of Medicago sativa L. and compost on organic and inorganic pollutant removal from a mixed contaminated soil and risk assessment using ecotoxicological testsShow others and affiliations
2016 (English)In: International journal of phytoremediation, ISSN 1522-6514, E-ISSN 1549-7879, Vol. 18, no 11, p. 1136-1147Article in journal (Refereed) Published
Abstract [en]
Several Gentle Remediation Options (GRO), e.g. plant-based options (phytoremediation), singly and combined with soil amendments, can be simultaneously efficient for degrading organic pollutants and either stabilizing or extracting trace elements (TE). Here, a 5-month greenhouse trial was performed to test the efficiency of Medicago sativa L., singly and combined with a compost addition (30% w/w), to treat soils contaminated by petroleum hydrocarbons (PHC), Co and Pb collected at an auto scrap yard. After five months, total soil Pb significantly decreased in the compost-amended soil planted with M. sativa, but not total soil Co. Compost incorporation into the soil promoted PHC degradation, M. sativa growth and survival, and shoot Pb concentrations (3.8 mg/kg DW). Residual risk assessment after the phytoremediation trial showed a positive effect of compost amendment on plant growth and earthworm development. The O2 uptake by soil microorganisms was lower in the compost-amended soil, suggesting a decrease in microbial activity. This study underlined the benefits of the phytoremediation option based on M. sativa cultivation and compost amendment for remediating PHC and Pb contaminated soils.
Place, publisher, year, edition, pages
2016. Vol. 18, no 11, p. 1136-1147
Keywords [en]
Cobalt, Petroleum Hydrocarbon, Phytoremediation, Polycyclic Aromatic Hydrocarbon, Lead
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
URN: urn:nbn:se:mdh:diva-57940DOI: 10.1080/15226514.2016.1186594ISI: 000381015200010PubMedID: 27216854Scopus ID: 2-s2.0-84978230447OAI: oai:DiVA.org:mdh-57940DiVA, id: diva2:1651643
2016-05-042022-04-12Bibliographically approved