Circularity: Keeping Materials Useful for Longer

Imagine using a new object once and immediately throwing it away.

Now imagine using the same material many times.

The second system usually keeps material value in use for longer.

This is the basic idea behind circularity.

Linear systems

A simplified linear pattern looks like:

Take → Make → Use → Throw Away.

Raw materials are extracted.

Products are manufactured.

They are used.

Then they are discarded.

Circular thinking

A more circular system asks whether the material can remain useful.

Possible steps include reduce, reuse, repair, refill, remanufacture, recycle and recover.

Not every product can use every step.

Reuse

Reusing an object can avoid making a new one.

Examples include refillable bottles, reusable containers, second-hand furniture and reusable equipment.

Repair

Repair extends product life.

A broken object does not always need to become waste.

Recycling

Recycling changes discarded material into material suitable for another production cycle.

Recycling still requires energy, collection, sorting and processing.

It is therefore useful, but it is not free of environmental burden.

Recovery

Some material can no longer be reused or recycled effectively.

Other forms of recovery may then be considered.

But recovering energy by burning a material is different from keeping the material itself in circulation.

Circular carbon

Carbon-containing materials create another distinction.

If plastic becomes another plastic product, material carbon remains in use.

If it is burned for energy, energy may be recovered but the original material is no longer circulating in the same way.

Ask what happens next

Circularity is not established by placing an arrow in a diagram.

Ask:

Was the material actually reused? Was the recycled product useful? Did it replace new material? What happened afterwards?

The governing lesson

Circularity means preserving useful value.

The best pathway depends on the material.