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Povzetek: Radioactive elements released into the environment have been an imperative environmental issue and poses health hazards for living organisms. Activated carbon is one of the most common adsorbents involved in radioactive wastewater remediation due to its high specific surface area and high degree of surface reactivity. In this study, three alternative activated carbons, previously produced via thermo-chemical activation using phosphorous acid and derived from apricot (Prunus armeniaca), plum (Prunus domestica), and cherry/sour cherry (Prunus avium/Prunus cerasus) kernels were evaluated for their effectiveness in removing radioactive substances. Water from a uranium mine at Žirovski Vrh, characterised by high resolution gamma spectrometry, was chosen for the experiment due to its rather high content of radionuclides, especially uranium. The efficiency of these carbonous materials was compared to a commercial activated carbon. During the experiments the remediation performance was monitored by determination of the gross alpha/gross beta activity, which can be used as fast and cost-efficient screening method for the calculation of decontamination level. Activated carbon from plum kernels showed remarkable achievement lowering alpha and beta activity for 95% and 96%, respectively. Radionuclide removal was most effective under neutral to alkaline conditions, achieving efficiencies > 85% for alpha emitters and > 95% for beta emitters. Desorption was successful with a small amount of 0.1 M H2SO4 and 0.1 M H3PO4, respectively, proving that the tested materials can be used repeatedly for recovery of uranium from waters. Our results emphasised the importance of different alternative carbonous materials potential in radioactive pollutant removal and recovery.
Ključne besede: environmental remediation, removal of radionuclides
Objavljeno v DiRROS: 25.02.2026; Ogledov: 151; Prenosov: 51
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Ključne besede: bio-based polymers, biopolymers, degradation, environmental impact, functional material properties, safe and sustainable by design
Objavljeno v DiRROS: 23.02.2026; Ogledov: 224; Prenosov: 94
Celotno besedilo (1,68 MB)
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Povzetek: This study explores the application of strontium (Sr) isotope ratios (87Sr/86Sr) as geochemical tracers to understand hydrological connectivity and anthropogenic influences in a geologically diverse Alpine river catchment encompassing regions of Austria and Slovenia. Focusing on the Mur River and its tributaries, water samples were collected across 45 sites during three hydrological regimes to capture seasonal and spatial variability. In total, 28 tributaries were sampled to evaluate their influence on the isotope composition of the main river. Isotope analyses using multi-collector inductively coupled plasma mass spectrometry, supplemented by geospatial mapping and multivariate statistics, were combined with measurements of 26 elemental concentrations to investigate land–water interactions and human impacts. The results demonstrate substantial temporal and spatial variability in 87Sr/86Sr ratios (ranging from 0.70853 to 0.71322), reflecting both geological heterogeneity and varying tributary inputs. A preliminary aquatic isoscape was developed, enabling the monitoring of connectivity and the impacts of geological and human influences under varying flow regimes. Tributaries, such as the Mürz River, significantly modulate isotope signatures in the main channel, often overriding local geological signals. The application of isotope pattern deconvolution revealed a contribution of 17% from the Mürz River to the Mur River’s isotope signature downstream of the confluence. Correlations between 87Sr/86Sr and metal concentrations further suggest the utility of 87Sr/86Sr as a proxy for source identification and anthropogenic influence assessment. By constructing a preliminary strontium isoscape for the region, this research provides novel insights into riverine connectivity, catchment-scale processes, and ecosystem dynamics. The integration of isotope data contributes to interdisciplinary understanding across geological, chemical, and ecological boundaries, and supports the development of isotope-based tools for sustainable aquatic system monitoring and management, including potential applications in fish ecology and habitat tracking.
Ključne besede: environmental monitoring, Sr isotopes, multi-element analysis, river management, river catchment tracing
Objavljeno v DiRROS: 13.02.2026; Ogledov: 372; Prenosov: 53
Celotno besedilo (2,61 MB)

Povzetek: Measuring sustainability as an efficient tool to achieve sustainable development and improve economic, social, and environmental aspects is always fraught with complications. In this sense, developing a suitable approach for evaluating and recognizing the strengths and weaknesses across these dimensions is paramount. Given the inherent uncertainty in data for many real-world applications, the primary aim of this paper is to present a data envelopment analysis (DEA) model for evaluating sustainability within a stochastic environment. The proposed model is non-radial and incorporates undesirable outputs, enabling the assessment of overall sustainability as well as each of the economic, social, and environmental dimensions simultaneously. This multi-dimensional evaluation capability is a key advantage of the proposed model. Additionally, the proposed model is based on input excesses and output shortfalls. Another notable advantage is the incorporation of the assumption of managerial disposability when dealing with undesirable outputs. To demonstrate the applicability of the proposed model, data from 59 diverse countries across Africa, Europe, North America, and Asia were analyzed over a 12-year period (2010–2022). The country selection was designed to capture global heterogeneity in development levels, policies, and environmental conditions, allowing for robust cross-continental comparisons. Key findings reveal that: (1) Europe achieves the highest stochastic sustainability scores, while North America performs poorest; (2) Environmental sustainability shows the most success cases globally, whereas social sustainability lags; (3) Significant trade-offs exist between economic growth and environmental protection.
Ključne besede: data envelopment analysis, performance analytics, Stochastic modeling, sustainability efficiency, environmental benchmarking, managerial disposability
Objavljeno v DiRROS: 04.02.2026; Ogledov: 443; Prenosov: 75
Celotno besedilo (1,45 MB)

Povzetek: This article examines how major droughts that affected all or parts of the Slovenian ethnic territory between 1921 and 2003 were reported in major Slovenian daily newspapers. Using qualitative content analysis, supported by basic corpus techniques, it analyses coverage of eight drought years (1921, 1939, 1950, 1952, 1962, 1983, 1992, and 2003) in Slovenec, Slovenski narod, Jutro, Slovenski poročevalec, Ljudska pravica, Delo, and Večer. The article analyses which vocabulary and metaphors newspapers used to describe heat and drought, how they reported on the impacts on agriculture and water resources, and how they portrayed state authorities, expert institutions, and farmers both as key response actors and as those most severely affected by the consequences of drought. It shows a shift from locally grounded and often sensational narratives in the interwar period, through more restrained and regime-aligned reporting under socialism, to more critical and risk-oriented framings after independence.
Ključne besede: environmental history, climate changes, drought, heat, press coverage, Slovenia, 20th cent., 21st. cent.
Objavljeno v DiRROS: 30.01.2026; Ogledov: 315; Prenosov: 163
Celotno besedilo (3,44 MB)
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