Search results for "Circular economy"
showing 9 items of 179 documents
Designing Dynamic Sustainable Business Models to Assess the Feasibility of an Industrial Symbiosis: The Case of the Retro-Port Area of Trieste
2023
This study evaluates the managerial sustainability of implementing a decision support system for industrial symbiosis through a recent business modeling methodology. The decision support system is intended to facilitate the identification of implementable industrial symbiosis good practices in a pilot project located in the industrial retro-port area of Trieste. To evaluate the feasibility of this project, a qualitative “Dynamic business model canvas for sustainability” was designed and supported by a system dynamics approach using causal loop diagrams. The study analyzed various governance scenarios for managing the decision support system (public, private, or public–private partnership) a…
Анализ проблем развития лесопромышленного комплекса при формировании модели экономики замкнутого цикла на примере Томской области
2019
The main objective of the paper is the conduction of the timber industry complex problems analysis from the circular economy and sustainable development point of view. The problem of waste is considered in conjunction with other environmental, economic and social problems. A modeling of the value chain process and the formation of threats along the whole chain «nature (forest) – economy – society (consumer)» is being conducted. A classification of the development problems in the timber industry complex on the basis of «created values» and «production factors» has been developed. Planned growth in logging volume and wood processing, expansion of unused waste require the development of a spec…
Institutional arrangements for sustainable development: Cases from the Navarra Province (Spain).
2015
After more than 20 years of the Earth Summit, Sustainable development is still recognized as one of the main challenges of the XXIst century. World leaders are putting new emphasis on the need to resolve urgent environmental challenges underlining their link with the wellbeing of humankind and the very conditions that made life possible on the planet. We are immersed in complex socio-ecological systems where sectoral or simplified responses are not adequate. A more systemic vision is imperative to effectively address the challenges faced. New approaches are being developed to integrate social, environmental and economic concerns in all human activities. Particular attention is given to deco…
Basic assumptions for introducing circular solutions in the buildings sector
2016
Tradycyjne, linearne modele biznesowe są jedną z głównych przyczyn braku zrównoważonego rozwoju, nadmiernego wykorzystywania zasobów nieodnawialnych i energii, a także nadmiernego wytwarzania odpadów. Odpowiedź na te problemy stanowi koncepcja gospodarki o obiegu zamkniętym, której celem jest poprawa wydajności w gospodarowaniu zasobami i energią w każdej fazie cyklu życia produktu (usługi). Głównym celem niniejszego artykułu jest określenie, co może być uznawane w sektorze budownictwa za produkt w ramach gospodarki o obiegu zamkniętym, a także, jakie rodzaje takich produktów i / lub usług mogłyby być potencjalnie wykorzystane przez firmy doradcze funkcjonujące między innymi w sektorze budo…
Preliminary Evaluation of Plasmix Compound from Plastics Packaging Waste for Reuse in Bituminous Pavements
2021
Finding an appropriate technical solution for reusing waste plastics is crucial for creating a circular plastic economy. Although mechanical recycling is the best option for recycling post-consumer plastics, some heterogeneous mixed plastics cannot be recycled to produce secondary material due to their very low properties. In this case, alternative routes should be considered in order to limit their disposal as much as possible. Therefore, in order to solve the environmental problems in the landfills of plastic waste recycling, and to improve the mechanical performance of bitumen for road pavement, the reuse of these post-consumer plastic wastes are preliminarily evaluated for the modificat…
Use of Fe and Al containing electrocoagulation sludge as an adsorbent and a catalyst in water treatment
2023
In this study, three different electrocoagulation (EC) sludges were studied as an adsorbent (removal of humic acids) and as a catalyst [catalytic wet peroxide oxidation (CWPO) of bisphenol A (BPA)]. The sludges originated from electrocoagulation process in which aluminum (Al) and iron (Fe) electrodes were used for the treatment of mining industry wastewater. All the materials were used as dried sludge and calcined material. The stability of these materials was studied in neutral and alkaline conditions with analysis of the leached iron content in solution. Based on the EC sludge characterization with X-ray fluorescence (XRF), X-ray diffractometer (XRD), and diffuse-reflectance infrared Four…
A different role of taxation. Using fiscal leverage as an incentive to foster regeneration of common goods and improve the performance of public gove…
2019
The paper analysis the possibility of using fiscal leverage as an incentive to foster policy of regeneration of common goods. Regeneration of urban goods and spaces not only shows some points in common with the so-called circular economy, but – trough the role played by private citizens who, by substituting or collaborating with public administrations, participate in reuse of goods and urban spaces – may also be considered as an efficient example of public and private cooperation, aiming to improve the level of well-being of the community. Thus, it may be argued that regeneration and taxation have an, at least partially, coinciding aim. Both pursue a general interest: regeneration in a most…
Value-added bioproducts or renewable energy derived from lignin? : comparative regional economic and environmental impact assessment : case Metsä Gro…
2016
Metsä Group’s next-generation bioproduct mill in Äänekoski will be operational within Q3/2017 and it will have significant regional economic impact on Central Finland. The mill will operate applying principles of circular economy, and thus utilize all possible side streams from pulp production. Lignin is one of the side streams that has huge potential to be refined, as sustainable products and by creating new value added. Conventionally, lignin is combusted with black liquor to generate energy in pulp mills. This thesis compares this conventional situation to refining lignin into biocomposite products made from 100% renewable resources with regard to regional economic and environmental impa…
Biopolymer Recovery from Aerobic Granular Sludge and Conventional Flocculent Sludge in Treating Industrial Wastewater: Preliminary Analysis of Differ…
2022
The recovery of biopolymers from sewage sludge could be a crucial step in implementing circular economy principles in wastewater treatment plants (WWTP). In this frame, the present study was aimed at evaluating the simultaneous production of polyhydroxyalkanoates (PHA) and extracellular polymeric substances (EPS) obtainable from the treatment of agro-industrial wastewater. Two biological enrichment systems, aerobic granular sludge (AGS) and a conventional activated sludge operating as a sequencing batch reactor (SBR), were monitored for 204 and 186 days, respectively. The maximum biopolymers accumulation capacity was close to 0.60 mgPHA-EPS gVSS−1 in the AGS when operating at 3 kgCODm…