1. Thermal treatment of raw and pre-treated wastes from the paper industryAleksandra Petrovič, Christoph Hochenauer, Matej Zazijal, Lidija Čuček, Darko Goričanec, Danijela Urbancl, 2023, original scientific article Abstract: In this study, the thermal treatment of two types of waste from the paper industry was investigated, paper mill sludge and sewage sludge from biological wastewater treatment plants. Hydrothermal carbonisation (HTC) and torrefaction were investigated as sustainable alternatives for solid biofuel production. Untreated samples and samples chemically pre-treated with alcoholic vinegar were subjected to torrefaction at 350 °C in N2 atmosphere, and the exhaust gases were analysed. HTC was performed at 250 °C with a residence time of 4 h. The feedstocks and the biochars produced were characterised by different analytical methods, and the effects of pre-treatment on fuel properties were studied. Both processes, HTC and torrefaction, showed inspiring results in the production of biofuels from paper industry wastes under the tested experimental conditions. A positive influence of pre-treatment on fuel properties (higher heating value, carbon content) of the obtained char was observed, and changes in the gas phase during torrefaction were observed.
Keywords: thermal treatment of waste, wastewater treatment, hydrothermal carbonisation
Published in DKUM: 18.04.2024; Views: 237; Downloads: 8
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2. Improving decentralized economic growth and reducing energy consumption in the European Union with the application of ecologically oriented innovationsNiko Natek, Boštjan Krajnc, 2020, professional article Abstract: This article presents applicable approaches for supporting the transition towards sustainable decentralized economic development within the European Union, based on the concept of supporting the development and market uptake of eco-innovations. The main topic addressed is achieving a more effective market uptake of ecologically oriented innovations facilitated through matchmaking, as well as knowledge and technology transfer between key actors of the innovation process.
Keywords: Energy efficiency, Ecology, Innovation, Economy, waste-water treatment, constructed wetlands, green-house gas emissions, EU
Published in DKUM: 15.11.2023; Views: 450; Downloads: 7
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3. Kinetic studies of catalytic ozonation of atrazineBrigita Tepuš, Marjana Simonič, 2008, original scientific article Abstract: The aim of our work was to degrade atrazine by the ozone treatment of both a model and the original drinking water samples, using Pt-catalyst, and to evaluate the performance of this catalyst. The rate constant for the reaction of atrazine with ozone was determined in the model water sample. The activation energies and the reaction orders of ozone decomposition were determined in both the model and the drinking water samples. Ozone treatment using Pt-catalyst has some influence on the loss of atrazine in the sources of drinking water. The concentration of some metabolites in the model and drinking water was observed during ozone treatment. The toxicity of atrazine to crustacean Daphnia magna in the original drinking water and in the ozone treated water samples was also assessed.
Keywords: ozone, Pt-catalyst, atrazine, water treatment, waste water, kinetics
Published in DKUM: 05.07.2017; Views: 1352; Downloads: 86
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4. Combustion of municipal solid waste for power productionFilip Kokalj, Niko Samec, 2013, independent scientific component part or a chapter in a monograph Keywords: gospodarjenje z odpadki, zgorevanje, waste management, municipal solid waste, integrated waste management system, waste-to-energy, thermal treatment, waste-to-energy plant, computational fluid dynamics
Published in DKUM: 10.07.2015; Views: 2227; Downloads: 97
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