Pub Date : 2018-11-01DOI: 10.18690/978-961-286-211-4.6
Zorka Novak Pintarič, Fakulteta za kemijo in kemijsko tehnologijo Univerza v Mariboru, Lidija Fras Zemljič, Olivija Plohl, Riko Šafarič, Božidar Bratina, Slavko Dvoršak, Fakulteta za strojništvo Univerza v Mariboru, Fakulteta za elektrotehniko računalništvo in informatiko Univerza v Mariboru, Maribor Slovenija Gorenje Surovina d.o.o.
This contribution presents a preliminary development of a conceptual circular business model based on processing waste streams into secondary raw materials, new products and energy sources. The main goal is to identify new alternatives for generating revenues and profits. This includes the selection of appropriate technologies for waste processing, new products and services derived from wastes, supply networks for products and services, thus creating new circular value chains. A portfolio of optimal technologies, products and services should be selected by using multiobjective optimization while taking into account the economic, environmental and social aspects of possible alternatives. The methodology for developing circular business models is illustrated on a case study of collecting, sorting and treating non-hazardous wastes. The focus was on i) producing high quality solid recovery fuel from non-recyclable packaging waste, and ii) converting sludge from waste-water treatment plants into valuable products. A schematic concept of circular business model was developed in which alternative technologies and products from wastes were added to the existing ones in order to increase value added in a sustainable manner. Preliminary economic analyses were performed for proposed alternatives. In subsequent work, environmental and social aspects will be evaluated following by multi-objective selection of optimal technologies.
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Pub Date : 2018-09-19DOI: 10.18690/978-961-286-211-4.14
Robert Bedoić, L. Čuček, D. Krajnc, B. Ćosić, Z. Kravanja, Tomislav Pukšec, N. Duić
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