Why are circular economies promoted as sustainable models?

Circular economies are promoted as sustainable models because they minimise waste and make efficient use of resources.

In a circular economy, the aim is to keep resources in use for as long as possible, extract the maximum value from them whilst in use, and then recover and regenerate products and materials at the end of their service life. This is in stark contrast to the traditional linear economy, which follows a 'take-make-dispose' model of production.

The circular economy model is sustainable for several reasons. Firstly, it reduces the need for raw materials. By reusing and recycling materials, we can significantly cut down on the amount of new resources that need to be extracted from the earth. This not only conserves natural resources, but also reduces the environmental impact of extraction processes, which often involve significant energy use and pollution.

Secondly, a circular economy minimises waste. In a linear economy, products are often designed to be used once and then thrown away. This results in a huge amount of waste, much of which ends up in landfill or in the oceans. In a circular economy, however, waste is seen as a resource to be used again. Products are designed to be durable, repairable and recyclable, and waste is minimised at every stage of the production process.

Thirdly, a circular economy promotes energy efficiency. By reusing and recycling materials, we can save the energy that would otherwise be used in the extraction and processing of new materials. Moreover, many circular economy strategies involve the use of renewable energy sources, further reducing the model's carbon footprint.

Finally, a circular economy can also have social benefits. It can create new jobs in recycling and remanufacturing industries, and can help to reduce poverty by making products and materials more affordable and accessible.

In conclusion, a circular economy is a sustainable model because it minimises waste, makes efficient use of resources, promotes energy efficiency and can have social benefits. It represents a viable alternative to the unsustainable linear economy, and is increasingly being promoted as a key strategy for achieving sustainable development.