Accelerated Liming Process Using Phase Transfer Catalyst

Abstract

In the present work, effect of using phase transfer catalysts (PTC) was studied in liming and re-liming processes of goat skin, for decrease in the processing time, thereby increasing productivity. Three different Phase Transfer Catalysts; Tetramethylammonium Hydroxide (TMAH), Tetraethylammonium Hydroxide (TEAH) and Tetrabutylammonium Hydroxide (TBAH) were chosen and experiments were conducted on liming and re-liming of goat skin to select suitable catalyst in comparison with the conventional liming process. The monitoring parameters were ease of hair removal and increase in pelt weight to find the maximum swelling and plumping. After determining the optimal PTC amount, studies were also carried out on reuse of liquor containing PTC with replenishment. Use of TMAH in liming process was found to bring about significant time reduction and could bring improved swelling in liming and re-liming processes.