Curtición de pieles de conejo con diferentes niveles de sulfato de aluminio (4, 5 y 6%) en conbinación con granofin F 90

Abstract

In the On-site Hide Tanning laboratory at the Faculty of Animal Sciences, ESPOCH, an evaluation was carried out on the tanning of rabbit hides with different levels of aluminum sulfate (4, 5, and 6%), in combination with granofin F 90, three treatments were carried out and six repetitions. The experimental units were modeled under a simple and completely randomized design. The results indicated that the most aproppiate level of aluminum sulfate is 6%, as it produces a very strong and soft material without raising the danger of contaminants in the wastewater. The use of the 6% aluminum sulfate (T3), can raise the tensile strength (1121.25 N cm2), elongation percentage (51.50%), and shrinkage temperature (81.83°C), surpassing leather regulations. The evaluation of sensory grading reported the highest responses for softness (5 points), using 6% of aluminum sulfate, as well as the best touch (5 points), and hair fineness was registered with the application of 4% mineral tanning. In carrying out the economic analysis, it was determined that the profitability achieved in treatment T3; was the highest as the cost-benefit ratio was 1.33, meaning that for every dollar invested there was a profit of 33%, which would increase with higher hide quantities. Furthermore, by using hides that are not contaminants, the qualities of these raw materials are strengthened, without damaging the environment