DBPapers
DOI: 10.5593/sgem2017/52/S20.026

COMPARATIVE BIODEGRADATION STUDY OF VARIOUS TYPES OF MATERIALS USED IN THE LEATHER AND FOOTWEAR INDUSTRY

M. Pantazi, A.M. Vasilescu, G. Macovescu
Wednesday 13 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7408-09-6 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 52, 195-200 pp, DOI: 10.5593/sgem2017/52/S20.026

ABSTRACT

In a market where footwear quality involves both health improvement and a better environmental protection, “environmentally-friendly footwear” that minimizes environmental and health impact, guaranteeing a certain level of quality, may fulfill the requirements of today’s consumer. Throughout their life cycle, from leather processing to the finished footwear, resulting waste and chemicals contained in some of the products may be harmful for health and the environment. In accordance to European law, waste from the leather and footwear industry must be recovered by reuse, recycling, energy recovery, exploitation by chemical and biochemical degradation, by recovering useful organic compounds. One of the possibilities to recover solid waste with low costs is biodegradation. The purpose of this paper is to comparatively study biodegradation under aerobic conditions in liquid medium of three types of materials used in the leather and footwear industry, namely: chrome tanned leather, leather tanned with vegetable compounds, and leather substitute. The biodegradability study was conducted in accordance with SR EN 13432/02 in a waste biodegradation plant in liquid medium under aerobic conditions (SR EN ISO 14852-05). To characterize the biodegradation process, the following were monitored for 100 days: conductivity, total organic carbon (TOC) content, total organic nitrogen (TON) content, and waste biodegradation degree.

Keywords: biodegradation, chrome-tanned leather, vegetable-tanned leather, synthetic leather