Oral
Abstract
Research summary supplied by the authors
The use of conventional lime/alkali system in beamhouse involves a series of complex operation units, which bring a lot of sulfide, suspended solids and ammonia nitrogen pollution. In this work, dispase was used for unhairing/opening collagen fiber-bundles/bating after alkali pre-swelling to replace lime/alkali process to simplify the unit operations in beamhouse. As a result, dispase one-bath beamhouse using alkali pre-swelling process has good effects of unhairing and fiber opening. Especially, NaOH pre-swelling dispase process, rapidly hydrolyzes the proteoglycans in bovine hides, while the collagen hydrolysis is very little. Besides, collagen fibers dispersion, grain smoothness and the fluffy effect of collagen fibers of tanned leather from dispase one beamhouse using NaOH pre-swelling process are the best. This work might provide a reference for simplifying the unit operations in beamhouse, reducing the environmental pollution and the development of high-quality leather.