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THE COMBINED USE OF VALUE-FOCUSED THINKING AND THOR 2 TO CHOOSE A BIODIGESTER IN A BRAZILIAN PUBLIC UNIVERSITY

2023; Sociedade Brasileira de Pesquisa Operacional; Volume: 43; Linguagem: Inglês

10.1590/0101-7438.2023.043.00268084

1678-5142

Letícia de Oliveira Gago Ramos de Souza, Marcos dos Santos, Carlos Francısco Sımões Gomes, Osvaldo Luíz Gonçalves Quelhas, Naia Augusto Barud,

Sustainable Supply Chain Management

There are liabilities for society because of the increase in the amount of waste. This work will choose a biodigester to treat organic waste at Universidade Federal Fluminense. For this, the VFT approach was used to structure the problem and the multicriteria decision support method THOR 2 was used to choose the option that has the most excellent preference considering three scenarios. The experts say that six criteria can be used to choose a biodigester, namely Capacity, Input of organic matter, Input of water, Average expected production of biogas and average output of biofertilizer. The research showed that biodigester 7 had the best performance as a result. The relevance of the study refers to the contribution to the reduction of organic solid waste in the environment. This research applies THOR 2 method in a new context.