Results and Discussion The composition of chrome shavings, a by-product of leather production, will vary from batch to batch since there is variation in both the hides and the tanning processes employed. Analysis of s...Results and Discussion The composition of chrome shavings, a by-product of leather production, will vary from batch to batch since there is variation in both the hides and the tanning processes employed. Analysis of shavings from several commercial sources yielded the following relatively narrow ranges of values for pH (3 to 4), moisture (50% to 54%), ash (8% to 14%), TKN (14% to 16%), fat (0.1% to 1.8%) and chromium (3% to 4% as chromic oxide). If the pH is outside of this range, it would have to be adjusted to assure the success of the process; other values used to characterize the shavings are not critical.展开更多
文摘Results and Discussion The composition of chrome shavings, a by-product of leather production, will vary from batch to batch since there is variation in both the hides and the tanning processes employed. Analysis of shavings from several commercial sources yielded the following relatively narrow ranges of values for pH (3 to 4), moisture (50% to 54%), ash (8% to 14%), TKN (14% to 16%), fat (0.1% to 1.8%) and chromium (3% to 4% as chromic oxide). If the pH is outside of this range, it would have to be adjusted to assure the success of the process; other values used to characterize the shavings are not critical.
