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Effect of Vermicomposting on the Concentration of Heavy Metals in Soil with Drill Cuttings

Kujawska Justyna, Wójcik-Oliveira Katarzyna

Journal of Ecological Engineering

2019

Vol. 20, nr 1

152--157

Organic and non-organic pollution present in the drilling waste may negatively impact flora and fauna. The tests conducted on earthworms may serve as indicators for the assessment of pollution bioavailability, i.a. heavy metals, polycyclic aromatic hydrocarbons, due to the relatively stable ratios between the concentration of certain pollutants in earthworms and soil. Moreover, earthworms are capable of metal bioaccumulation in tissues; therefore, they can be utilized as an ecological indicator of soil pollution. The studies on bioaccumulation of heavy metals from soils with the addition of drilling wastes in tissues of earthworms were conducted. The reduction percentage (R) of each scenario was calculated for the total concentration of all heavy metals. As data showed, all heavy metal content was reduced from its initial concentration.

Possibility of carbon dioxide sequestration by catch crops

Pawłowska Małgorzata, Pawłowski Artur, Pawłowski Lucjan, Cel Wojciech, Wójcik-Oliveira Katarzyna, Kwiatkowski Cezary, Harasim Elżbieta, Wang Lei

Ecological Chemistry and Engineering. S

2019

Vol. 26, nr 4

641--649

The global fluxes of carbon in the ecosystem of Earth, with particular attention drawn to the cycle of CO2 were characterised. The sequestration of carbon dioxide in the biomass of plants, especially the ones which can be cultivated as catch crops is described. It was shown that the cultivation of catch crops may play an important role in the mitigation of CO2 emissions.