Economic and environmental analysis of animal fats acidity reduction by enzymatic esterification

• Type: Article in International Scientific Journal
• Date: 2018-02-24

Authors

Teresa M. Mata (Author) FEUP; Fábio Pinto (Author) Other; Nídia Caetano (Author) FEUP; António A. Martins (Author) FEUP

Journal

Title: Journal of Cleaner Production

Vol. 184

Pages: 481-489

ISSN: 0959-6526

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 3 Citations

ISI Web of Science

Scopus - 3 Citations

INSPEC

Associated Projects

PP-IJUP2014-SojadePortugal-1 - Estudo do potencial de redução de acidez de gorduras animais provenientes da transformação de subprodutos

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Other information

Authenticus ID: P-00N-TX5

DOI: 10.1016/j.jclepro.2018.02.253

Abstract (EN): mammalian fats) by enzymatic esterification, when applied at industrial scale in a Portuguese company, and determines its carbon and water footprints as a measure of its potential environmental impact. Cost and revenue data were obtained from real industrial and commercial sources, complemented with literature and life cycle inventory data for the environmental impact calculations. Based on esterification experiments, for optimizing operating conditions and enzymes selection, two scenarios are analyzed in this work, using ethanol 96% (v/v) as reagent, and the following enzymes commercialized by Novozymes as catalyst: (1) Lipozyme® CALB L for fish oil and mammalian fat and Novozym® 435 for poultry fat; (2) Lipozyme® TL 100L for fish oil and Lecitase® Ultra for mammalian fat. Results show that under current conditions the new process for the fats acidity reduction is not economically viable. To be feasible the cost of enzymes should decrease to at least 9.75 V/kg and 1 V/kg for treating, respectively, the fish oil and the mammalian fat. Alternatively, the sale price of fish oil alone and of fish oil and mammalian fat together, should increase at least 3 and 4% respectively, to ensure that the process is cost effective. For the process operating conditions defined in this work, it is estimated a carbon and water footprints of, respectively, 1.3 t CO2 eq/t fat and 574 m3 water/t fat for the new esterification process, corresponding to minor increases in the footprints of the current company processes.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9