DBPapers
DOI: 10.5593/sgem2017/42/S17.013

BIOGAS PRODUCTION – FUTURE SOLUTION IN MANAGEMENT OF TANNERIES WASTES

G. LAZAROIU, E. M. MAVRODIN, A. D. BONDREA, L. Mihaescu, R. MOCANU
Tuesday 12 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7408-07-2 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 42, 97-102 pp, DOI: 10.5593/sgem2017/42/S17.013

ABSTRACT

Different operations, such as fleshing, trimmings, cuttings and chips from hides, causes leather industry in being one of the most environmental ‘unfriendly’ sectors. Moreover, the treatment of sewage waters brings up also the problem of mud which is related with the appearance of biodegradation process of organic waste, followed by the emission of greenhouse gases, especially methane and nitrous oxide. All these wastes also imply a terrible smell and a strong land contamination. The large quantity of wastes, but also their variety led to a continuous process of developing new ways to treat and solve these problems by their recovery technically, economically and environmentally.

In order to follow the general trend of energy recovery and the possibility of using in the system, there are distinguished two options: animal fat and biogas resulted from wastewater treatment and sludge discharged. One of the most favorable technological solution is the anaerobic digestion that decomposes a part of the organic matter contained in the tannery sludge and solid waste, by biogas production.

Keywords: leather industry, tannery, biogas, digester, anaerobic digestion,