A geração de resíduos sólidos por curtumes e alternativas de tratamento e reuso

Abstract

Industrial activities produce several kind of waste that may present high pollution degree and are mostly forwarded to industrial landfill. Leather industry is a potent waste producer, presenting a high amount of cattle skin waste generated from tannery and effluent treatment process. Landfill of waste tannery demands industrial costs and promotes the loss of potentially useful materials, in addition to therisks of environmental contaminations. There isan urgency for alternatives screening for organic and chromium wastes removal out of effluent and sludge produced along the tannery process, in order to avoid the waste disposal on landfill. Chemical, physical and biological techniques are known and useful to remove the chromium and organic waste out, in order to reuse the tannery wastes. The aim of this study was to screen solid and recent informations about the methods applied in tannery waste treatment. It is observed a tendency for suitable methods to remove the chromium out of effluent and sludge toward to a best tannery waste useful.