Multicriteria decision making applied to waste recycling: comparison between THOR and THOR 2 methods

Abstract

Paper aims

This paper aims to compare the results of the THOR2 Method, in comparison to the original THOR method, and to analyse possible rank changes between the methods, to support decision-making in the evolutionary process of waste recycling in Brazil.

Originality

; Proposes a revision of the model for analysis of Waste Recycling, highlighting the vision of three decision makers individually, and later the integrated vision.

Research method

State of the art of the THOR and THOR2 methods, through an investigation in four databases and comparison using THORWeb.

Main findings

As a result of the disposal of plastic waste, reuse, mechanical recycling, chemical and incineration remained in the positions with the consumer as a decision maker. With the other decision makers there was only one significant change, where the landfill went from last to first position.

Implications for theory and practice

There was only one significant change when comparing methods.

Keywords
Waste; Multicriteria; Sustainability; THOR method