Short-term Preservation of Hide and Skins Using Peracetic Acid

Abstract

Treatment with a mixture of sodium hydroxide, hydrogen peroxide and acetic anhydride at 15 20oC during 2 h allows preservation of hide during 20 days at temperature 22±1oC. Prolongation of the treatment duration more than 2 h and increase of the treatment temperature higher than 20oC do not markedly increase the preservation effect but affects hide structure at these higher level. The application of short term preservation methods leads to substantial decrease of materials consumption. Preserved by oxidative method hide is more sensitive to chemicals during technological processes than ones cured by sodium chloride, and its derma structure is opened in higher level. It binds more chromium compounds during chroming. The crust leather produced from hide preserved by oxidative method characterized by satisfactory strength properties. The use of proposed short term preservation of hide allows reduction of Cl–concentration in wastewater more than 11 times.