As the center of leather industry in the world, China produced over 700.000 metric tons of chromium-containing leather wastes every year, which not only heavily polluted the environment, but also wasted large amount of useful collagen protein and chromium resources because of the wastes not being properly utilized.
The thesis focused on recycling of chrome leather wastes and transforming them into value-added products. Based on applying three steps hydrolysis and proper modification met...