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Targeting energy generation and carbon footprint for waste management and processing
Petar Varbanov, Lidija Čuček, Jiri Klemeš, Zdravko Kravanja, 2012, objavljeni znanstveni prispevek na konferenci

Opis: Waste to Energy (WTE) processing carries a trade-off between energy extractionfrom the waste and the energy for waste management - collection, transport and treatment. Major performance indicators are the Primary Energy Savings (PES), Carbon Footprint (CFP) and especially the cost. This presentation analyses the significance of the factors in this trade-off introducing a new indicator - the Waste Energy Potential Utilisation (WPU). The results indicate that the impact of the logistics and energy distribution can be significant, and distributed WTE architectures can be good candidates for waste processing, subject to further economical and environmental conditions.
Ključne besede: waste-to-energy, waste energy potential utilisation, optimisation processing distribution
Objavljeno: 10.07.2015; Ogledov: 571; Prenosov: 34
URL Povezava na celotno besedilo

Best available techniques for developing countries
Peter Glavič, 2003, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: environmental protection, cleaner technologies, waste oil treatment, Slovenia
Objavljeno: 01.06.2012; Ogledov: 1497; Prenosov: 14
URL Povezava na celotno besedilo

Improving the economic and environmental performances of the beet sugar industry in Slovenia: increasing fuel efficiency and using by-products for ethanol
Damjan Krajnc, Miro Mele, Peter Glavič, 2007, izvirni znanstveni članek

Opis: This paper investigates the possibilities of attaining zero-waste emissions inthe case of sugar production. The case-studied sugar plant located in Slovenia reflected a typical plant, using traditional sugar production from beet. An investigation of the possible use of waste and by-products from sugarprocessing was carried out, in order to approach zero-waste from beet sugar processing. The sugar production process was simulated and optimization was carried out concerning energy utilization. Consumption of energy in the chosen sugar plant was lowered by simultaneous optimization of the evaporationand crystallization process. Changing the fuel type used in the case-studied sugar plant (replacement of heavy fuel oil with natural gas) produced a significant decrease in air emission. Opportunities in the sugar industry have been discovered for adapting to new market conditions through the optimization of combined sugar-ethanol production. The two proposed options have been economically and environmentally evaluated and compared.
Ključne besede: kemična industrija, trajnostni razvoj, proizvodnja sladkorja, minimiranje porabe energije, evaporacija, etanol, chemical industries, sustainable development, sugar production, energy minimization, evaporation, ethanol, zero waste
Objavljeno: 01.06.2012; Ogledov: 1930; Prenosov: 78
URL Povezava na celotno besedilo

Utilization of bottom ash from the incineration of separated wastes as a cement substitute
Filip Kokalj, Niko Samec, Bernardka Jurič, 2005, izvirni znanstveni članek

Opis: Waste incineration is still an essential technology in the concept of integrated waste management. Most of the combustion residues are incinerator bottom ash. It has been discovered that incinerator bottom ash from the incineration of separated waste in the primary chamber of the modular two-stage incinerator mainly consists of metal oxides, especially SiO2 and CaO, in proportions that are quite similar to those in cement and so the feasibility of its application as a substitute for cement in concrete was investigated. It was found that after 28 days, the flexural and compressive strengths of the binder using bottom ash were practically comparable with those of a pure cement mixture. The results show that it is reasonable to use a binder containing incinerator bottom ash for applications in which an early-stage lower strength of concrete element is acceptable.
Ključne besede: waste management, solid municipal waste, separated wastes incineration, bottom ash, cement, concrete
Objavljeno: 01.06.2012; Ogledov: 1508; Prenosov: 102
URL Povezava na celotno besedilo

Laundry wastewater treatment using coagulation and membrane filtration
Sonja Šostar-Turk, Irena Petrinić, Marjana Simonič, 2005, izvirni znanstveni članek

Opis: This paper presents the results obtained from laundry wastewater treatment using conventional methods namely precipitation/coagulation and the flocculation process with adsorption on granular-activated carbon (GAC) and an alternative method, membrane filtrations, namely ultrafiltration (UF) and reverse osmosis (RO). Chemical analyses showed that parameter values of untreated wastewater like temperature, pH, sediment substances, total nitrogen and phosphorous, COD, BOD5, and the amount of anion surfactants had been exceeded in regard to Slovenian regulation. These regulations can be used as requirements for wastewater reuse and make treated wastewater an available source for the existing water supply. The study of conventional treatment was based on a flocculation with Al2(SO4)3 18H2O and adsorption on GAC. Membrane filtrations were studied on a pilot wastewater treatment plant: ultrafiltration (UF) and reverse osmosis (RO) units. The membranes used in this experiment were ceramic UF membrane and spiral wounded - polyethersulfone- RO membranes. The quality of the wastewater was improved by both methods and the specifications of a concentration limit for emission into water were confirmed. The disadvantage of GAC is that there is no possibility of any kind of selection, which is essential for recycling and re-use, while permeate coming from RO met the required regulation as well as requirements for reusing in washing process. However, the economical analyses showed that the membrane filtrations are more expensive compared to the GAC treatment process.
Ključne besede: laundries, washing of textiles, waste waters, advanced oxidation processes, membrane technology, membrane filtration, coagulation
Objavljeno: 01.06.2012; Ogledov: 1860; Prenosov: 100
URL Povezava na celotno besedilo

Application of cyclodextrins in textile dyeing
Bojana Vončina, 2011, samostojni znanstveni sestavek ali poglavje v monografski publikaciji

Ključne besede: textile dyeing, cyclodextrins, dyeing auxiliaries, polyfunctionalization, textile waste water
Objavljeno: 01.06.2012; Ogledov: 1109; Prenosov: 71
URL Povezava na celotno besedilo

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