How does internal recycling work in manufacturing industries?

Internal recycling in manufacturing refers to the reuse of waste materials generated directly within a specific production process. Instead of discarding these by-products, industries recover and reprocess them for immediate use, which serves as a cost-effective alternative to sourcing new raw materials.1

How It Works

The process typically involves capturing waste generated during production and reintegrating it into the manufacturing cycle:

• Remelting and Recasting: In the metals industry, for example, scrap such as tube ends, trimmings, metal cuttings, or imperfect products are collected, remelted, and recast entirely within the facility.12
• By-product Processing: Some industries transform waste into secondary products. For instance, in the distilling industry, spent grain mash is dried and processed into animal feed. Similarly, steel manufacturers may capture and purify by-products from coke ovens, such as organic compounds or ammonia, to be sold for other industrial or agricultural uses.12

By keeping these materials within the production loop, manufacturers reduce waste disposal costs and minimize the environmental impact associated with extracting and processing virgin resources.12