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Online marketplaces enable cooperation between potential stakeholders by supporting offer and demand identification at the secondary raw material markets. The use of marketplaces facilitates communication between supply chain actors operating within the same or different industry sectors and enables detection of ways to close the loop of their products. This research investigated which criteria to use for the circular cooperation matching of companies in the context of a marketplace. These criteria were used for the development of a circular economy (CE) matchmaking framework based on a multi-level approach and relevance scoring between the users. The multi-level approach is based on the following criteria: (i) the compliance with circular economy principles, (ii) the material flows analysis, (iii) the greenhouse gas (GHG) emissions from transport. Based on those aspects a Total Relevance Score (TRS) between the stakeholders is calculated. The Total Relevance Score indicates the possibility for successful circular cooperation between two partners who are willing to close their loops with the best possible match. The logic behind the proposed circular economy matchmaking framework is illustrated by four cases using data collected from companies. Recommendations for further deployment are proposed. The developed framework, by incorporating circular economy principles for the first time within the matching algorithm, provides the opportunity for interested stakeholders for more tailored matching and increases their possibilities of finding a perfect match on the secondary raw materials market in terms of circularity. A similar approach has not yet been reported in the literature. The circular economy matchmaking framework constitutes a theoretical basis of an online marketplace to be developed.
Lucyna Łȩkawska-Andrinopoulou; Georgios Tsimiklis; Sarah Leick; Manuel Moreno Nicolás; Angelos Amditis. Circular Economy Matchmaking Framework for Future Marketplace Deployment. Sustainability 2021, 13, 5668 .
AMA StyleLucyna Łȩkawska-Andrinopoulou, Georgios Tsimiklis, Sarah Leick, Manuel Moreno Nicolás, Angelos Amditis. Circular Economy Matchmaking Framework for Future Marketplace Deployment. Sustainability. 2021; 13 (10):5668.
Chicago/Turabian StyleLucyna Łȩkawska-Andrinopoulou; Georgios Tsimiklis; Sarah Leick; Manuel Moreno Nicolás; Angelos Amditis. 2021. "Circular Economy Matchmaking Framework for Future Marketplace Deployment." Sustainability 13, no. 10: 5668.
Pectin is a natural polysaccharide used in food and pharma industries. Pectin degree of methylation is an important parameter having significant influence on pectin applications. A rapid, fully automated, kinetic flow method for determination of pectin methyl esters has been developed. The method is based on a lab-made analyzer using the reverse flow-injection/stopped flow principle. Methanol is released from pectin by pectin methylesterase in the first mixing coil. Enzyme working solution is injected further downstream and it is mixed with pectin/pectin methylesterase stream in the second mixing coil. Methanol is oxidized by alcohol oxidase releasing formaldehyde and hydrogen peroxide. This reaction is coupled to horse radish peroxidase catalyzed reaction, which gives the colored product 4-N-(p-benzoquinoneimine)-antipyrine. Reaction rate is proportional to methanol concentration and it is followed using Ocean Optics USB 2000+ spectrophotometer. The analyzer is fully regulated by a lab written LabVIEW program. The detection limit was 1.47 mM with an analysis rate of 7 samples h−1. A pairedt-test with results from manual method showed that the automated method results are equivalent to the manual method at the 95% confidence interval. The developed method is rapid and sustainable and it is the first application of flow analysis in pectin analysis.
Lucyna Łękawska-Andrinopoulou; Efstathios G. Vasiliou; Dimitrios G. Georgakopoulos; Constantinos P. Yialouris; Constantinos Georgiou. Rapid Enzymatic Method for Pectin Methyl Esters Determination. Journal of Analytical Methods in Chemistry 2013, 2013, 1 -7.
AMA StyleLucyna Łękawska-Andrinopoulou, Efstathios G. Vasiliou, Dimitrios G. Georgakopoulos, Constantinos P. Yialouris, Constantinos Georgiou. Rapid Enzymatic Method for Pectin Methyl Esters Determination. Journal of Analytical Methods in Chemistry. 2013; 2013 ():1-7.
Chicago/Turabian StyleLucyna Łękawska-Andrinopoulou; Efstathios G. Vasiliou; Dimitrios G. Georgakopoulos; Constantinos P. Yialouris; Constantinos Georgiou. 2013. "Rapid Enzymatic Method for Pectin Methyl Esters Determination." Journal of Analytical Methods in Chemistry 2013, no. : 1-7.