3.1.4. Industrial Symbiosis

Industrial Symbiosis: Waste streams from one project become resource inputs for another (e.g., using reclaimed aggregates in new concrete).

Industrial symbiosis is a concept where the waste produced by one industrial process is used as a resource for another process. This creates a circular flow of materials, reducing waste and promoting sustainability. For example, if a construction project has excess concrete, that concrete can be crushed and reused as aggregate in a new construction project, instead of being disposed of in a landfill.

Think about an artist who creates sculptures from scrap metal. Instead of throwing away leftover pieces from their earlier works, they incorporate those scraps into new projects. Similarly, in industrial symbiosis, one person’s waste becomes another person’s art.

Benefits include resource efficiency, cost savings, lower carbon footprint, and innovation.

Industrial symbiosis offers multiple benefits: It promotes resource efficiency, which means using materials more wisely and decreasing the need for new resources. This often leads to cost savings, as manufacturers can reduce their disposal and material costs. Furthermore, by reusing materials, it also lowers the carbon footprint associated with transporting resources. Lastly, it can foster innovation, creating new business models and job opportunities in areas like refurbishment and materials trading.

Consider a group of neighbors who decide to share tools instead of each buying their own. By sharing, they save money, reduce clutter, and foster a collaborative community spirit. In the same way, companies can share materials and resources to mutually benefit from what would otherwise be waste.

Examples of circular approach applications include modular building systems, cradle-to-cradle certification, and urban mining.

The principle of industrial symbiosis has practical applications in various areas, such as modular building systems, where prefabricated units can be repurposed in different projects. Cradle-to-cradle certification emphasizes the design of products that can be fully reused or recycled without losing value. Urban mining refers to the process of reclaiming metals and materials from old buildings rather than extracting new resources. These examples highlight how materials can continuously circulate in the economy.

Imagine a library where books are borrowed, read, and then returned for others to enjoy. Instead of buying every book new, the library system allows everyone to access a wide range of materials through sharing. Similarly, in industrial symbiosis, materials are circulated and reused, maximizing their value while minimizing waste.

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