Pollutants and use of waste in lion tanning, producing biogas and biodiesel

Abstract

Slaughterhouses and leather tanners cause great environmental contamination, mainly by trivalent chromium and sometimes hexavalent, blood, fats and organic waste that decompose. In León, slaughterhouses and tanneries do not follow the guidelines for waste treatment and pollution reduction. With this work we seek to make a study of environmental contaminants in slaughterhouses and tanning industries, making physical-chemical environmental measurements to verify the environmental impact. A biodigester and a mini reactor were built to obtain biogas and biodiesel, using both organic and fatty waste as raw material, as a source of use and reduction of pollution. was divided into 4 zones for analysis, the physicochemical parameters measured were: pH, CO2 (ppm), dissolved O2 (mg / L), Conductivity (μs / cm), BOD5, COD, color, smell, appearance, temperature, humidity relative. According to the BOD5 / COD ratio, the 4 zones are above 8, this indicates that the water is more biodegradable and can be treated biologically for cleaning, CO2 levels indicate that they are suitable for river, lake, lagoon and river areas. seas, especially where there is flora that can use CO2. All organic waste can be used to obtain biogas (methane).