Original scientific paper

https://doi.org/10.5772/52799

Efficiency in Brazilian Refineries Under Different DEA Technologies

Claudia Aparecida Cavalheiro Francisco ; Petroleum Science and Engineering Post Graduation Programme, UFRN, Brazil
Mariana Rodrigues de Almeida ; Production Engineering Post Graduation Programme, UFRN, Brazil
Djalma Ribeiro da Silva ; Petroleum Science and Engineering Post Graduation Programme, UFRN, Brazil

Abstract

This paper aims to assess the environmental efficiency of refineries in the public sector with emphasis on generated effluents and water consumption in the production process. In order to conduct this research, the addressed method was quantitative with a qualitative approach to the environmental aspects of controllable and uncontrollable variables implemented in two classical models of Data Envelopment Analysis (DEA), considering only desirable outputs and two DEA models which include undesirable outputs. The sample consists of ten refineries considering the following as input variables: idleness percentage of the operating plant, the amount of water consumed; and the following as outputs: refinery production volume and generated effluents, desirable and undesirable, respectively, besides the uncontrollable variable, the refinery age. With the comparison result between the models, we observed the clear importance of the environmental variable for a more realistic analysis of the production process.

Keywords

environmental efficiency; data envelopment analysis; undesirable output; oil refinery

Hrčak ID:

160555

URI

https://hrcak.srce.hr/160555

Publication date:

1.1.2012.

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