Abstract

This paper looks at a number of cutting-edge methods for turning tannery byproducts into goods with additional value. To produce high-quality leather items, leather tanning uses meat industry leftovers, which generates a significant amount of tannery waste. These wastes must be disposed of properly to protect the environment and to prevent significant financial damage. Considering the issues, initiatives have been launched lately to decrease waste contamination and promote the conversion of tannery waste into profitable co-products. At numerous points in the leather-making process, wastes such as buffing dust, keratin hair, fleshings, chrome shavings and raw trimmings are produced. The following primary locations have been thoroughly researched in order to investigate their alternate uses: processing collagen or its hydrolysate for a variety of uses, creation of bio-based materials, adsorbent materials, bio-energy application, agricultural fertiliser, animal dietary and fermentation feedstock. We have talked about the difficulties we must overcome and thoroughly examined the prospects and technology now available for the value-adding of tannery trash. The objective of this review is to give readers a comprehensive understanding of the possibilities of employing tannery waste as an inexpensive raw material to produce value-added goods that could solve environmental issues and make money.