Mitigating Tannery Pollution in Sub-Saharan Africa and South Asia

Abstract

The global leather market is worth more than $270 billion annually, and provides an important and accessible source of manufacturing exports for countries in the South. Leather is the source for a range of apparel items, including handbags, belts, shoes, wallets, gloves, and various other products, such as furniture, car seats, and luggage. Behind all leather goods is the tannery industry, with much of the raw materials processing located in the Global South (Lund-Thomsen, 2009, Journal of Business Ethics, vol. 90, p. 57). Unlike most synthetic fibers, which are derived from plastics and associated with the petrochemical industry, leather has the potential for a comparatively lighter footprint because it is based on natural and renewable materials not associated with the carbon emissions of fossil fuels. However, leather has suffered from various concerns, including animal rights and toxic effluents. It is ranked as the fourth most dangerous global industry to human health, with many tanneries in the South lacking basic protection for the workers and leaching toxic chromium into rivers (Green Cross and Pure Earth, 2016, World’s worst pollution problems: The toxics beneath our feet). This article explores the prospects for reducing the environmental footprint of tanneries in the Global South, focusing on the Sustainable Manufacturing and Environmental Pollution (SMEP) program, a series of projects in South Asia (SA) and Sub-Saharan Africa (SSA) that explore ways to reduce manufacturing pollution. The article lays out a series of technical and managerial interventions that would vastly reduce the negative impacts on human health and the natural environment.

Enhanced chromium removal from tannery wastewater through electrocoagulation with iron electrodes: Leveraging the Box-Behnken design for optimization

“…The negative environmental impact of tanning has been widely studied and evidenced and therefore this industry is considered one of the most polluting [ [5] , [6] , [7] , [8] ]. The pollutant load of their effluents is characterized by high levels of DOC, BOD, sulfides, TSS, chromium, ammonia nitrogen among others [ 5 , 9 ].…”