Value-added Products from Slaughterhouse and Tannery by products
Value addition Technologies ( Weaith from wastes)
Parchment like material
The product is essentially a thin, flexible as well as transparent sheet resembling a parchment and is prepared from materials like chrome shavings, trimmings from skin/hide, which are subjected to alkali hydrolysis under controlled conditions. The paste is treated with plasticiser/ crosslinker and is finally cast into sheet, which is dried to get parchment like material. The sheet finds application in the products industry for fabrication of several decorative/fancy items like puppets, lamp shades, chandeliers, wall hangers, table tops etc. The unique feature of the process is that the acidified chrome solution, generated as a byproduct, can be reused in leather processing, thereby suggesting a viable method for chrome recovery/reuse in leather processing industry. Moreover, the material is not prone to insect damage or putrefaction. Thus the process essentially suggests an eco-friendly as well as economical method of utilization of the chrome shavings, which would otherwise add to disposal problem, to make value added products, thereby creating wealth out of waste.
It is essentially an animal protein meal which can be incorporated in feed formulations of poultry and piggery by substituting fish meal, meat meal. The process for preparation of fleshing meal involves washing of limed fleshings available abundantly in the beam-house of a tannery, followed by deliming, degreasing and subsequent drying as well as pulverising to get the product in powder form. The unique feature is that the process provides an eco-friendly as well as economical option to convert limed fleshings, which would otherwise add to pollution and disposal problem, into an animal feed, thereby creating value addition and utility to a byproduct of tannery. The technology has already been transferred.
Glue/gelatin from tannery wastes
Glue/gelatin can be produced from the collagenous component of the connective tissues present in skin, bone and sinews. While the chemical constituents of both glue and gelatin are same, they are essentially differentiated by purity, colour, processing conditions. The raw stock of glue is less refined and the extraction process involves drastic conditions, whereas gelatin processing requires clean edible raw materials, stringent processing conditions, control and purification. Glue/technical gelatin is not sterilized during manufacture. But edible gelatin undergoes sterilization prior to drying. Gelatin is used for the preparation of capsules, jellies, adhesives etc and it is also extensively used in pharmaceutical, photographic and abrasive industries. The technology is ready for transfer.
Fallen Carcass Utilisation Technology (FCUT)
Different body parts of an animal, either slaughtered or fallen carcass, can be utilised economically for producing different value added products. FCU technology is an eco-friendly and sustainable technology developed by CLRI for total utilisation of fallen animals (cattle and buffalo). It enables the production of economically useful products from waste. The process includes lifting of fallen animals, flaying techniques, preservation of hides and skins, rendering (cooking) the bones and flesh, preparation of meat meal, bone meal, tallow, besides treatment of effluent waste water and conversion of rumen contents into composite. The technology package includes installation and commissioning of machinery and equipment and demonstration of the process apart from preliminary survey and preparation of project feasibility report .