Reciclaje y reutilización del baño de piquelado a diferentes porcentajes en la curtición de pieles ovinas

Abstract

In the fur tanning laboratory of the animal science faculty at ESPOCH, was assessed the use of three different percentages of reuse pickling bath (60, 80 and 100%), compared with a control treatment (0%), with 4 repetitions in 2 consecutive trials under a completely random design, in accordance bifactorial. The results inferred that best percentage was 100%, because it represents a higher surface masking skin, improves flexural resistance (22,74 cycles), tensile strength (251,64/cm2), and stretching percent (75,79%). The sensory evaluation provides the best results when applying the 100% of pickling bath reused, specifically of fullness (4.75 points), softness (4.50 points), and roundness (4.75 points). When it starts a new bath (control treatment), in the process of pickling shaped a poor masking structure of the leather flower, so this preclude a good tanning product distribution, causing a leather with less physical resistance and lower sensorial scores. The economic evaluation records the best results of the recycling with the 100% of the pickling bath, as the cost benefit was 1.37, it means that for each dollar invested it expects a gain of 37% which is higher than the other similar industrial activities. It is recommended to recycle the pickling baths in order to reduce the environmental impact caused by the presence of acids ang salts, which do not enter in the interwoven fibrilar.