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1.
Modeliranje ogljičnega odtisa metilirane melaminske smole
Borut Solina, 2021, diplomsko delo

Opis: Podnebne spremembe in globalno segrevanje sodita med glavne probleme na svetu, zato države in podjetja stremijo k temu, da bi preprečila ali vsaj zmanjšala vzroke teh pojavov. Eden izmed načinov za dosego tega cilja je zmanjšanje emisij toplogrednih plinov v industriji, zato smo v diplomskem delu v sodelovanju s podjetjem Melamin iz Kočevja razvili model za ocenjevanje ogljičnega odtisa za produkt metilirano melaminsko smolo heksametoksimetilol melamin. Za osnovo smo uporabili metodologijo ISCC+ in v izračun vključili emisije toplogrednih plinov, ki nastajajo pri transportu kemikalij in proizvodnji produkta in ne za celotni življenjski cikel izdelka. Za to metodologijo smo se odločili zaradi pobude podjetja Melamin. Za transport smo ugotovili, da je iz vidika ogljičnega odtisa najbolj ugodno, da se na kopnem kemikalije prevažajo z železniškim transportom namesto s cestnim in preko morij z ladijskim prevozom namesto letalskim. Pri proizvodnji produkta smo ugotovili, da je za zmanjšanje ogljičnega odtisa potrebno kemikalije, pridobljene iz fosilnih virov, zamenjati s kemikalijami, pridobljenimi iz bioosnovanih virov. Primerjali smo metanol na osnovi fosilnih virov z biometanolom iz podjetij BioMCN in Sodra. Količina nastalih emisij v proizvodnji z uporabo metanola na osnovi fosilnih virov je bila 3,88 tCO2eq/tprod. Če smo uporabili biometanol iz podjetja BioMCN, se je ogljični odtis zmanjša na 3,40 tCO2eq/tprod, medtem ko so z biometanolom podjetja Sodra bile emisije še nižje in sicer 3,05 tCO2eq/tprod. Pomembno je tudi, da se vsaj del porabljene elektrike proizvaja iz nefosilnih virov, kot je denimo lesna biomasa, saj se s tem zelo zmanjša ogljični odtis. Podjetje pridobiva 25 % električne energije iz lesne biomase in s tem zmanjša ogljični odtis zaradi porabe elektrike za 22,14 % v primerjavi s celotnim odjemom iz omrežja.
Ključne besede: ogljični odtis, ogljikov dioksid, transport, proizvodnja, emisija, metilirana melaminska smola
Objavljeno: 22.09.2021; Ogledov: 38; Prenosov: 12
.pdf Celotno besedilo (2,26 MB)

2.
Trajnostno usmerjen pristop k merljivim in nenehnim izboljšavam v predelovalnih dejavnostih
Damjan Krajnc, 2011, izvirni znanstveni članek

Opis: Trajnostni razvoj temelji na tridimenzijskem konceptu, ki vključuje okoljsko delovanje, družbeno odgovornost in ekonomski prispevek. V članku je predlagana metodologija za merjeno doseganje trajnostnega razvoja podjetij, ki temelji na devetih stopnjah. Prednost in posebnost metodologije je v vključitvi matematičnega modela za izračun sestavljenega indeksa trajnostnega razvoja podjetja, ki predstavlja združeno informacijo o delovanju podjetja na vseh treh dimenzijah trajnosti. Uporabnost modela je predstavljena v študiji primera. Predlagana metodologija vključuje tudi stopnjo za ocenitev delovanja podjetja glede na standarde najboljših razpoložljivih tehnik, definiranih v skladu s smernico o celovitem preprečevanju in obvladovanju onesnaževanja. V ta namen je bil razvit model za primerjanje delovanja podjetij z najvišjimi standardi v sektorju, kot jih definirajo referenčni dokumenti o najboljših razpoložljivih tehnikah. Učinkovitost modela je bila preizkušena v študiji primera, v kateri smo primerjalno ocenili vzorčno podjetje.
Ključne besede: trajnostni razvoj, razvoj, merjenje, kazalniki, indeksi, primerjave, ocenjevanje, smernice, tehnologija
Objavljeno: 10.07.2015; Ogledov: 490; Prenosov: 32
URL Povezava na celotno besedilo

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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: 2009; Prenosov: 79
URL Povezava na celotno besedilo

6.
A model for integrated assessment of sustainable development
Damjan Krajnc, Peter Glavič, 2005, izvirni znanstveni članek

Opis: The focus of the paper is on consideration of how to use indicators to monitor sustainable development in a relevant and useful manner. Integrated information on sustainable development of a company is very essential for decision-making since it is very difficult to evaluate the performance of the company on the ground of too many indicators. The objective of the work was to design a model for obtaining a composite sustainable development index (ICSD) in order to track integrated information on economic, environmental, and social performance of the company with time. Normalized indicators were associated into three sustainability sub-indices and finally composed into an overall indicator of a company performance. This was applied by determining the impact of individual indicator to the overall sustainability of a company using the concept of analytic hierarchy process. The demonstration of the model used data for a case study company, Henkel, and a set of sustainable development indicators that were classified using the currently most widely accepted approach of the Global Reporting Initiative (GRI). Case study was used to measure ICSD and sustainability sub-indices of the company over the time interval of 6 years. Interpretation of results is given and the utility of ICSD with its relevance for decision-making is pointed out. Using a case study, the paper demonstrates that the model can be applied to deliver composite indicators of sustainability performance of companies.
Ključne besede: clean technologies, environmental protection, sustainable development, sustainability indicators, composite index, sustainability assessment, multiattribute decision-making
Objavljeno: 01.06.2012; Ogledov: 2182; Prenosov: 74
URL Povezava na celotno besedilo

7.
How to compare companies on relevant dimensions of sustainability
Damjan Krajnc, Peter Glavič, 2005, izvirni znanstveni članek

Opis: Dozens of frameworks of sustainability assessment that focus on the performance of companies have been suggested by now. They propose using numerous sustainability indicators, which are generally measured in very different units. While it is important to assess sustainability with several indicators, it may sometimes be difficult to make comparisons among companies based on a large number of performance measurements. This paper presents a model for designing a composite sustainable development index that depicts performance of companies along all the three dimensions of sustainability-economic, environmental, and societal. In the first part of thepaper, the procedure of calculating the index that would enable comparisonsof companies in specific sector regarding sustainability performance is presented. However, the emphasis of the paper is on the second part, where the effectiveness of the proposed model is illustrated with a casestudy in which two companies from specific sector are compared regarding their sustainability performance.
Ključne besede: chemical industries, sustainable development, sustainability indicators, composed index, sustainability assessment
Objavljeno: 01.06.2012; Ogledov: 1717; Prenosov: 91
URL Povezava na celotno besedilo

8.
Practices and trends of sustainability reporting in Slovenian companies
Peter Glavič, Damjan Krajnc, Rebeka Kovačič Lukman, 2008, objavljeni povzetek strokovnega prispevka na konferenci

Objavljeno: 31.05.2012; Ogledov: 1168; Prenosov: 6
URL Povezava na celotno besedilo

9.
Energy and liguid-fuels problems
Peter Glavič, Damjan Krajnc, 2008, objavljeni povzetek strokovnega prispevka na konferenci

Objavljeno: 31.05.2012; Ogledov: 961; Prenosov: 22
URL Povezava na celotno besedilo

10.
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