Process of recycling of solid waste of leather tanned with chromium powder, bran / rebaixadeira / chrome shavings, sawdust, between media through the separation of proteins and chrome via systems of semi permeable membranes resonant

摘要

Process of recycling of solid waste of leather tanned with chromium powder, bran / rebaixadeira / chrome shavings, sawdust, between media through the separation of proteins and chrome via systems of semi permeable membranes resonant.The present invention patent of process, is characterized by the removal of chromium III present in the powder / bran aixadeira REL), also called chrome shavings and sawdust, patchwork leather tanned with chromium, resulting from the process of lowering suffered by leather, by hydrolysis u00e1cid The alkaline enzymes (proteases, or,Collagenases) (1) using membrane filtration system semipermeu00e0veis resonant 2 resistant to clogging ("fouling"). With the extraction of the card (3) is obtained (L) ermeado (4) and subsequent drying, collagen dessalinizado powder free from chromium and can be used in the food industry, coke or as fertilizer.The concentrate consisting essentially of chromium III, otherwise highly pollutant, it is thus recycled and reused in the process, not being released into the environment as it is today.The innovative aspect of this process for the separation of chromium (3) and (4) consists of the protein hydrolysis (1) acidic, alkaline, or enzymes (proteases and collagenases) followed by filtration system via semi permeable membranes with (2) (v.s.e.p. - vibratomy shear enhanced processing) created p Her company new Logie research.