Application of supercritical carbon dioxide for leather processing

Abstract

Supercritical fluids have attracted considerable interest as reaction media over the last decade. Supercritical carbon dioxide is a clean and versatile solvent for various processes and synthesis. In this review, supercritical carbon dioxide properties and its industrial applications related to leather technology were summarized. Application of supercritical carbon dioxide on leather making was reviewed in-depth according to individual process to avoid the corresponding pollutions and reduce environmental burden. Due to high investment cost, supercritical carbon dioxide was widely believed to be restricted only to high value-added products. To position this technology in leather industrial production, the economic evaluation was estimated based on published resources. Supercritical carbon dioxide could deliver its potential values in the forthcoming years for greener and cleaner leather production. The aim of this review is to highlight the available opportunities with supercritical carbon dioxide as a potential alternative solution for leather cleaner production.