Tannery Solid Waste to Treat Toxic Liquid Wastes: A New Holistic Paradigm

摘要

Leather processing involves conversion of putrescible hide/skin into nonputrescible leather. This results inngeneration of both solid and liquid wastes. Solid waste disposal is increasingly becoming a huge challenge tontanners due to paucity of landfill sites and strict environmental legislations worldwide. Hence, finding a holisticnsolution to the tannery solid waste disposal problem is a challenge for researchers. In this context, use of solidnwaste for treatment of toxic pollutants in liquid waste is emerging as a new paradigm for solid waste generatednfrom tanneries. Tannery solid wastes such as fleshings, trimmings, and shavings are proteinous wastes. Hence,nthey contain functional groups that can complex with many metals and organic molecules such as dyes. Thisnarticle presents an overview of the solid wastes emanating from tanneries and the various disposal methodsnpracticed with special emphasis on the utilization of these wastes to treat toxic liquid pollutants