Ivan Dragicevic

• Pilic, Zora; Dragicevic, Ivan & Martinovic, Ivana (2019). The anti-corrosion behaviour of Satureja montana L. extract on iron in NaCl solution. Open Chemistry. 17(1), s. 1087–1094. doi: 10.1515/chem-2019-0126. Fulltekst i vitenarkiv
• Sogn, Trine Aulstad; Dragicevic, Ivan; Linjordet, Roar; Krogstad, Tore; Eijsink, Vincent & Eich-Greatorex, Susanne (2018). Recycling of biogas digestates in plant production: NPK fertilizer value and risk of leaching. International Journal of Recycling of Organic Waste in Agriculture. ISSN 2195-3228. 7(1), s. 49–58. doi: 10.1007/s40093-017-0188-0. Fulltekst i vitenarkiv Vis sammendrag

  Purpose The main purposes of the study were to assess the NPK fertilizer value of biogas digestates in different soils and to evaluate the risk of unwanted nutrient leaching. Methods The fertilizer value of digestates from anaerobic digesters was investigated in a greenhouse pot experiment with wheat in three different soils; silt, loam and sand. The digestates were based on different feedstock and had a low, dry matter content. The fertilizing effect of digestates was compared to mineral fertilizer and manure. To investigate the fate of excess nutrients in soil after the growing season, the pots were leached after harvest. A complementary soil column leaching experiment without plants was carried out in the laboratory. Results The concentration of ammonium in digestates provided a good indicator of the nitrogen fertilizer value of the digestates. In the silt and loam, the ammonium N fraction in digestates had a fertilizer replacement value equal to that of mineral fertilizer N, whereas the replacement value was higher in the nutrient poor sandy soil. Digestates often have a ratio between nitrogen, phosphorus and potassium which is not favourable for plant growth. However, the suboptimal balance did not result in reduced plant growth or unwanted leaching from soil. Conclusions The results show that digestates from biogas production based on fundamentally different feedstock are promising as NPK fertilizers. The N fertilization can simply be based on the digestate NH4+ concentration and, at least for wheat production, considerable variation in the concentrations of K and P can be tolerated.

• Dragicevic, Ivan; Sogn, Trine Aulstad & Eich-Greatorex, Susanne (2018). Recycling of Biogas Digestates in Crop Production — Soil and Plant Trace Metal Content and Variability. Frontiers in Sustainable Food Systems. 2. doi: 10.3389/fsufs.2018.00045. Fulltekst i vitenarkiv Vis sammendrag

  Production of biogas and utilization of the resulting digestates as fertilizers has been increasing in Europe in the last few decades. Depending on the feedstock used for the anaerobic digestion process, these organic fertilizers may be a source of different pollutants, such as trace metals. When applied to soils, digestates may influence the natural metal content and enhance the release of metals to the environment since they can be rich in different trace metals and are usually rich in dissolved organic matter. This study focused on investigating metal presence, seasonal variability of their soluble forms and crop uptake in a 2-year field experiment, using two different biogas digestates as fertilizers. The use of digestates as fertilizers was compared to cattle manure, mineral fertilizer and a control without fertilizer addition, with respect to the presence and distribution of the trace metals Cd, Cu, Zn, Ni, Cr, Mn, and Mo, as well as Al in the soil and plant. The results of the study showed that both biogas digestates have caused a 10–20% increase in the total soil concentration of Ni, Cd and Cr compared to control plots without fertilizer addition. Application of biogas digestates had only a minor effect on metal uptake in plants. Overall, the selected application rate of 100 kg/ha of plant available nitrogen has had little effect on plant metal uptake and crop quality and the use of biogas digestates was comparable to the use of animal manure.

• Dragicevic, Ivan; Eich-Greatorex, Susanne; Sogn, Trine Aulstad; Horn, Svein Jarle & Krogstad, Tore (2018). Use of high metal-containing biogas digestates in cereal production – Mobility of chromium and aluminium. Journal of Environmental Management (JEM). ISSN 0301-4797. 217, s. 12–22. doi: 10.1016/j.jenvman.2018.03.090. Fulltekst i vitenarkiv
• Dragicevic, Ivan; Eich-Greatorex, Susanne; Sogn, Trine Aulstad; Linjordet, Roar & Krogstad, Tore (2017). Fate of copper, nickel and zinc after biogas digestate application to three different soil types. Environmental Science and Pollution Research. ISSN 0944-1344. 24(14), s. 13095–13106. doi: 10.1007/s11356-017-8886-8. Fulltekst i vitenarkiv Vis sammendrag

  Soil application of organic residues from anaerobic digestion of municipal food waste and/or sewage sludge may introduce considerable amounts of heavy metals into the environment. In a column leaching experiment, mobility and release of Cu, Ni and Zn were investigated in three contrasting soils (sand, silt, loam) fertilized with biogas digestates of different origin. The effect of commercial digestates, based on food waste and sewage sludge, was compared to that of experimental digestates based on animal manure and whey permeate with or without fish ensilage, as well as untreated manure, mineral fertilizer and an untreated control. Manure and digestates were added to the columns as fresh material at equal amounts of available nitrogen. The experiment simulated high-intensity rainfall over a period of 7 days. In general, soil treated with the commercial digestates with higher original metal content showed less environmental impact in terms of Ni, Cu and Zn leaching than that treated with experimental digestates with lower original metal content and less than when animal manure or mineral fertilizer was applied. Although effects of digestate application on metal mobility in soils were seen in conditions of extreme precipitation, the leached concentrations of metals were below limitations published by the WHO but still significantly higher than that measured for control soils.

• Martinovic, Ivana; Pilic, Zora & Dragicevic, Ivan (2015). Electrochemical behaviour of stainless steel in acidic fluoride media. International Journal of Materials Research - Zeitschrift für Metallkunde. ISSN 1862-5282. 106(10), s. 1067–1076. doi: 10.3139/146.111278. Fulltekst i vitenarkiv
• Dragicevic, Ivan; Baric, Danijela; Kovacevic, Borislav; Golding, Bernard T. & Smith, David M. (2015). Non-enzymatic Ribonucleotide Reduction in the Prebiotic Context. Chemistry - A European Journal. ISSN 0947-6539. 21(16), s. 6132–6143. doi: 10.1002/chem.201405741. Fulltekst i vitenarkiv
• Baric, Danijela; Dragicevic, Ivan & Kovacevic, Borislav (2014). Cyclopropenimine as a hydrogen bond acceptor-towards the strongest non-phosphorus superbases. Tetrahedron. ISSN 0040-4020. 70(45), s. 8571–8576. doi: 10.1016/j.tet.2014.09.068. Fulltekst i vitenarkiv
• Baric, Danijela; Dragicevic, Ivan & Kovacevic, Borislav (2013). Design of Superbasic Guanidines: The Role of Multiple Intramolecular Hydrogen Bonds. Journal of Organic Chemistry. ISSN 0022-3263. 78(8), s. 4075–4082. doi: 10.1021/jo400396d. Fulltekst i vitenarkiv

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• Kallenborn, Roland; Dragicevic, Ivan; Eich-Greatorex, Susanne; Sogn, Trine Aulstad & Benskin, Jonathan (2018). Environmental pollutants as indicators for the quality of waste recycling strategies and energy production from bio-resources. Fulltekst i vitenarkiv
• Kallenborn, Roland; Ali, Aasim Musa Mohamed; Dragicevic, Ivan; Sogn, Trine Aulstad; Eich-Greatorex, Susanne & Lyche, Jan Ludvig [Vis alle 7 forfattere av denne artikkelen] (2018). Environmental aspects and consequences in bio-waste recirculation: Pollutant release from applications in Agricultural production. Fulltekst i vitenarkiv
• Dragicevic, Ivan; Greatorex, Susanne Eich; Sogn, Trine Aulstad; Benskin, Jonathan & Kallenborn, Roland (2018). Bio-waste from biogas production as soil amendment: Indications for pollutant release and up-take in bıota. Fulltekst i vitenarkiv Vis sammendrag

  n a sustainable bioeconomy, recycling of both non-renewable and renewable nutrients from organic residues will be an imperative feature. There is a huge diversity in organic residues depending on their origin and/or the type of process involved in their production. Application of organic residues as soil amendment and fertilizer will recycle the nutrients contained in the residues but may also imply a dispersal of contaminants on agricultural soils. From soils, contaminants may be absorbed into food and fodder plants, ultimately resulting in animal and human exposure, or further spread in the environment with negative consequences also for other ecosystems. Many knowledge gaps still exist on how to treat issues like persistent organic pollutants (POPs) or contaminants of emerging concern (CEC) in these soil amendments. The use of biological (waste) material in anaerobic digestion for the production of biogas is a growing industry in Norway. Several municipal and commercial production plants are currently delivering biogas products for heating purposes and as fuel for vehicles (i.e. public transportation). This development leads not only to an increasing amount of bioenergy produced, but also to a potentially greater number of residues, such as biogas digestate (waste). The most attractive option to manage these digestates is to apply them as organic fertiliser to agricultural land recovering the nutrients, primarily nitrogen and phosphorus, and of potentially improving soil quality by adding organic matter. However, such residues may also contain complex mixtures of organic and inorganic pollutants, salts and/or pathogenic bacteria that can adversely affect terrestrial organisms. Therefore, a research project (Novel organic pollutants from recycling of organic waste as risk factors for human exposure: NovelPol) has been initiated to investigate the potential for transferring anthropogenic organic pollutants throughout the anaerobic digestion process into bio-wastes and ultimately into vegetation (in case the bio-waste is used for soil amendment). Preliminary studies on several waste products indicate the presence of a variety of persistent anthropogenic pollutants including perfluoroalkyl substances (PFASs) and selected pharmaceutical residues. A first overview will be presented and potential consequences for the environment will discussed during the presentation.

• Dragicevic, Ivan; Sandblom, Oskar; Eich-Greatorex, Susanne; Sogn, Trine Aulstad; Kallenborn, Roland & Benskin, Jonathan (2017). Per- and polyfluoroalkyl substances in soil, grain and leachate following field application of biogas digestates. Fulltekst i vitenarkiv
• Dragicevic, Ivan; Eich-Greatorex, Susanne; Sogn, Trine Aulstad & Krogstad, Tore (2017). Environmental implications of aluminium and chromium release from soils amended with biogas digestates. Fulltekst i vitenarkiv Vis sammendrag

  Engelsk

• Dragicevic, Ivan; Eich-Greatorex, Susanne; Sogn, Trine Aulstad; Linjordet, Roar & Krogstad, Tore (2017). Mobility and release of heavy metals after biogas digestate application to three different soils. Fulltekst i vitenarkiv
• Zivanovic, Valentina; Dragicevic, Ivan & Krogstad, Tore (2017). Analysis of plant available nutrients by use of ICP-MS, ICP-OES and MP-AES – simplifying the analytical approach in everyday analysis. Fulltekst i vitenarkiv
• Sogn, Trine Aulstad; Dragicevic, Ivan & Eich-Greatorex, Susanne (2017). Biogas digestate as NPK fertilizer. Fulltekst i vitenarkiv
• Sogn, Trine Aulstad; Eich-Greatorex, Susanne & Dragicevic, Ivan (2016). Recycling of biogas digestate in cereal production – Nitrogen fertilizer value and nitrate leaching. Fulltekst i vitenarkiv
• Dragicevic, Ivan & Sogn, Trine Aulstad (2018). Analyse av Cr(VI+) i biorest fra Romerike biogassanlegg. Norges miljø- og biovitenskapelige universitet (NMBU). Fulltekst i vitenarkiv

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