Mathematical optimization of a supply chain for the production of fuel pellets from residual biomass

2016 ◽  
Vol 19 (3) ◽  
pp. 721-734 ◽  
Author(s):  
Manuel Alejandro Méndez-Vázquez ◽  
Fernando Israel Gómez-Castro ◽  
José María Ponce-Ortega ◽  
Alma Hortensia Serafín-Muñoz ◽  
José Ezequiel Santibañez-Aguilar ◽  
...  
Author(s):  
M.A. Méndez-Vázquez ◽  
F.I. Gómez-Castro ◽  
J.M. Ponce-Ortega ◽  
A.H. Serafín-Muñoz ◽  
J.E. Santibañez-Aguilar ◽  
...  

Complexity ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-25 ◽  
Author(s):  
Daniel Arturo Olivares Vera ◽  
Elias Olivares-Benitez ◽  
Eleazar Puente Rivera ◽  
Mónica López-Campos ◽  
Pablo A. Miranda

This paper develops a location-allocation model to optimize a four-echelon supply chain network, addressing manufacturing and distribution centers location, supplier selection and flow allocation for raw materials from suppliers to manufacturers, and finished products for end customers, while searching for system profit maximization. A fractional-factorial design of experiments is performed to analyze the effects of capacity, quality, delivery time, and interest rate on profit and system performance. The model is formulated as a mixed-integer linear programming problem and solved by using well-known commercial software. The usage of factorial experiments combined with mathematical optimization is a novel approach to address supply chain network design problems. The application of the proposed model to a case study shows that this combination of techniques yields satisfying results in terms of both its behavior and the obtained managerial insights. An ANOVA analysis is executed to quantify the effects of each factor and their interactions. In the analyzed case study, the transportation cost is the most relevant cost component, and the most relevant opportunity for profit improvement is found in the factor of quality. The proposed combination of methods can be adapted to different problems and industries.


2017 ◽  
Vol 2 (3) ◽  
pp. 119-130
Author(s):  
János Szendrei ◽  
Balázs Kocsi ◽  
István Budai ◽  
Gábor Grasselli ◽  
Edit Szűcs

Business organisations constantly strive to improve their processes, both internal and external. Within the supply chain of a product, different strategies can be applied. This paper aims to answer the basic questions like what is the core of lean and agile SCM strategies, what are the differences of the two models, and how can they be combined. This paper examines further, which of these SCM models and what elements of them can be applied for wood pellet supply chains, also examining the possibility of their combination. The result of these examinations is, that even though fuel pellets can be considered as simple commodity and not a very innovative product, diversity in input characteristics, optimization of fuel pellet technology process variables and changes in output market qualities and quantities need sometimes agile, flexible answer from pellet fuel SCM. The basically lean character of pellet fuel technologies and SCM can further enhanced by implementing agile SCM model elements, as is the increased integration of suppliers into the supply chain.


Author(s):  
Eduardo dos Santos Teixeira ◽  
Socorro Rangel ◽  
Helenice de O. Florentino ◽  
Silvio Alexandre de Araujo

2020 ◽  
Author(s):  
Philip Tominac ◽  
Horacio Aguirre-Villegas ◽  
Joseph Sanford ◽  
Rebecca A. Larson ◽  
Victor Zavala

<p>We apply systems engineering principals and life cycle analysis (LCA) to municipal waste supply chains to elucidate sustainability incentives. Environmental impacts are quantified using LCA for waste management technologies available in the supply chain, and included as products. The supply chain is modeled as a coordinated market and resolved using mathematical optimization techniques. Incorporating impacts as products allows us to analyze the influence of tax policy on optimal waste management strategies.</p>


2020 ◽  
Vol 12 (12) ◽  
pp. 4936 ◽  
Author(s):  
Alessandro Suardi ◽  
Walter Stefanoni ◽  
Simone Bergonzoli ◽  
Francesco Latterini ◽  
Nils Jonsson ◽  
...  

The growing population worldwide will create the demand for higher cereal production, in order to meet the food need of both humans and animals in the future. Consequently, the quantity of crop by-products produced by cereal cropping will increase accordingly, providing a good opportunity for fostering the development of the sustainable supply chain of renewable solid fuels and natural feedstock for animal farming. The conventional machineries used in wheat harvesting do not guarantee the possibility to collect the chaff as additional residue to the straw. The present study investigated the possibility to equip a conventional combine with a specific device, already available on the market, in order to collect the chaff either separately (onto a trailer), or together with the straw (baled). The total residual biomass increased by 0.84 t·ha−1 and 0.80 t·ha−1 respectively, without negatively affecting the performance of the combine when the chaff was discharged on the swath. Farmers can benefit economically from the extra biomass collected, although a proper sizing of the machine chain is fundamental to avoid by-product losses and lower revenue.


Energies ◽  
2016 ◽  
Vol 9 (7) ◽  
pp. 526 ◽  
Author(s):  
Ilaria Zambon ◽  
Fabrizio Colosimo ◽  
Danilo Monarca ◽  
Massimo Cecchini ◽  
Francesco Gallucci ◽  
...  

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