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

Abstract

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

Adsorption on activated carbon derived from tannery fleshing waste: Adsorption isotherms, thermodynamics, and kinetics

“…The % solid waste generated is as follows: green fleshings 10%, limed fleshing 35%; trimmings 7-12% on the weight of raw hide; chrome trimmings 5.5-6% on the weight of hide; chrome shaving 10% on the weight of raw hide; chrome splits account for 4%-6%; buffing dust 0.2-0.4%; skin trimming 1-1.2%; and hair 10-12% on the weight of animal [17,18]. In this work, an attempt has been made to convert tannery biomass waste into bio-adsorbent and to use the same for chromium(VI) removal.…”

Hazardous and industrial waste composition and associated management activities in Caspian industrial park, Iran

“…This industrial development has resulted in generating high amount of complex and hazardous industrial wastes (Fathima et al, 2012;Salihoglu, 2010). The term industrial waste refers to all wastes produced by industrial activities and manufacturing processes (Lei et al, 2015;Thai, 2009).…”

Influence of some mechanical finishing processes on manufactured leather properties

“…It also exists as an independent industry due to the unique properties of the leather and its wide usages such as footwear, upholstery, gloves, garments, cases, and other purposes (Fathima et al, 2012).…”