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Type of publication: conference paper
Field of Science: Aplinkos inžinerija / Environmental engineering (T004)
Author(s): Rubežius, Mantas;Venslauskas, Kęstutis;Navickas, Kęstutis
Title: Oil-contaminated soil treatment by herbaceous plants and their subsequent use for biogas
Is part of: Advances and Innovations in Agricultural Engineering: The 3rd NJF - Agromek- EurAgEng joint seminar Nov. 27 - 28, 2018 in Herning, Denmark : book of abstracts / Nordic Association of Agricultural Scientists (NJF). Herning : NJF, 2018
Extent: p. 22-22
Date: 2018
Keywords: anaerobic digestion;biomass;soil cleaning;naphta pollution
Abstract: Renewable energy sources are needed to reduce fossil fuel demand, price fluctuation, depletion of resources and climate change. Using phytoremedial methods in biomass engineering, there is a possibility to create a sustainable method of biomass growth in mid-low contaminated sites soil system. The aim of the research was to assess the oil-contaminated soil treatment by herbaceous plants and their subsequent use for biogas production in order to create a closed cleaning and plant biomass utilization cycle. Results show that the proper selection of herbaceous energy plants can reach high level of oil contaminated sites treatment from 223 to 594 mg/kg of oil hydrocarbons concentration in soil. By using 3 selected plants soil pollution with oil products declined by 3,2; 2,2 and 1,6 times respectively. In all cases, the test showed that the soil pollution of oil products was lower or slightly higher than threshold value of permissible maximum (200 mg/kg) soil pollution after one cycle of treating by plants. Plants endurance limit has not been reached, visual oil hydrocarbons toxicity effects were not observed. After the evaluation of the biogas yield and energy conversion efficiency performance it was found that all selected herbaceous plant biomass is suitable as raw material for the production of biogas. The biogas potential of selected plants ranged from 377.2 to 822.9 l/kg dry organic matter with an energy value ranging from 7.1 MJ/kg to 17.1 MJ/kg
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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