The 4Rs: Reduce, Reuse, Recycle, Recover, Eliminate
Reading time: 6 minutes – Sources: ADEME, Institut de l’économie circulaire, Recyc-Québec, Global E-Waste Monitor 2024
Five words in the right order—and we almost always start with the wrong one
Reduce. Reuse. Recycle. Recover. Eliminate.
These five words form a hierarchy, not a list. The order isn’t arbitrary: it reflects a physical and economic reality. The earlier you intervene in an item’s life cycle, the greater the impact. The longer you wait, the more you lose—in value, in resources, in carbon already emitted.
Yet in practice, we almost always start from the bottom. We recycle, or we throw away, because that’s the end-of-life gesture—the one that comes once every other decision has already been made. The most effective actions, by contrast, happen much earlier: at the point of purchase, at the point of replacement, at the point of deciding what to do with a device that still works.
Reduce: the first step, the most effective, the least practised
Reducing means not creating the problem in the first place. In the digital sector, that comes down to a single question: do I really need a new device?
A computer that’s slowing down isn’t necessarily a computer that needs replacing. A missing software update, a full hard drive, insufficient RAM—these are solvable technical problems, not signs of end of life. The device isn’t old. It’s under-maintained.
Reducing also means choosing equipment designed to last. A repairable device, with available parts and accessible technical documentation, has a far longer life expectancy than one assembled with glue or solder. The repairability index, gradually being introduced in several countries, is starting to make this information visible at the point of purchase.
What reducing actually avoids: the manufacturing of a new device, with everything that entails in terms of mineral extraction, energy, and CO₂ emissions—80% of a digital device’s total footprint, concentrated before it’s even turned on for the first time.
Reuse: the second life most devices never get
Reusing means extending the life of a device that still works, either by keeping it longer, passing it on to someone who can still use it, or handing it to a refurbisher who will upgrade it before redistributing it.
In the tech sector, reuse takes several concrete forms: donating to an organization, reselling on a secondary market, or professional refurbishment. The latter involves diagnosing the device, replacing faulty components, securely wiping the data, and redistributing it at a fair price to individuals or organizations.
According to ADEME, buying refurbished equipment instead of new avoids a substantial share of environmental impacts, because it doesn’t require manufacturing an additional device. This is where the circular economy has its most direct and measurable effect.
Recycle: useful, but not where we often place it
Recycling is often presented as the default responsible action. It deserves to be put back in its rightful place in the hierarchy: it’s the third option, not the first.
Recycling means dismantling a device to recover its materials: metals, plastics, electronic components. It’s clearly better than landfilling. But the process is costly, technically complex, and recovers only a fraction of the energy and resources invested in the original manufacturing.
In 2022, only 22.3% of the world’s electronic waste was formally collected and recycled (Global E-Waste Monitor, UN, 2024). The rest—nearly 78%—was landfilled, incinerated, or processed through informal channels. Recycling is a necessary but insufficient solution. No digital equipment management strategy built on recycling alone can be called circular.
Recover: when material can no longer be reused or properly recycled
When a piece of equipment or a component can no longer be reused, nor recycled in an economically or technically viable way, a fourth step comes into play: recovery.
In the electronics sector, recovery mainly takes the form of extracting valuable materials through hydrometallurgical or pyrometallurgical processes. Gold, copper, palladium, silver, and other metals found in circuit boards can be extracted and reintroduced into manufacturing chains. This is what’s known as “urban mining”: the idea that our end-of-life devices are deposits of secondary raw materials.
The numbers give a sense of the stakes: in 2022, the value of metals embedded in the world’s electronic waste was estimated at US$91 billion. Only $28 billion was recovered. A tonne of electronic waste can contain up to 100 times more gold than a tonne of ore extracted from a traditional mine—an exceptional concentration that current recovery systems aren’t yet able to fully exploit.
Energy recovery (recovering energy through controlled incineration) is another, less desirable form, reserved for materials that can’t be recycled or recovered in any other way.
Despite its potential, recovery is still a loss. It doesn’t recover the energy invested in manufacturing the device, nor its functional value. It’s proof that circularity failed somewhere upstream—in design, in maintenance, or in reuse. That’s why it belongs near the bottom of the hierarchy, not in the middle.
Eliminate: the failure of the chain
Elimination (landfilling or incineration without energy recovery) is the worst outcome. It represents the outright destruction of resources that cost water, energy, rare materials, and CO₂ emissions to produce. It creates risks of soil and groundwater contamination from the toxic substances found in electronic equipment: lead, mercury, cadmium, flame retardants.
In 2022, about 14 million tonnes of the world’s electronic waste were landfilled or eliminated without adequate treatment. That figure is a collective failure, not an inevitability.
The full hierarchy, from most to least desirable
Reduce → Don't create unnecessary equipment. Don't replace prematurely.
Reuse → Extend the device's life. Pass it on. Have it refurbished.
Recycle → Recover the materials. Third option, not first.
Recover → Extract what can still be extracted. Urban mining, precious metals.
Eliminate → Last resort. Always a failure of the chain.The goal of a circular strategy is to keep equipment as high as possible in this hierarchy, and to avoid the last two steps through everything done upstream.
Why we do things backwards
The reality is as structural as it is behavioural. Reducing and reusing require effort at the point of purchase or replacement. Recycling and recovery happen at end of life, when the decision has already been made and the effort is handed off to an outside system.
There’s also an economic dimension. The tech sector’s dominant model is built on frequent equipment turnover. Reducing and reusing structurally go against the grain of that model. Recycling, on the other hand, fits into it without friction—and it offers peace of mind without ever challenging the logic of replacement.
Changing the order, then, means changing the logic—not just individual behaviour.
What this means for an organization in Quebec
For an individual, applying this hierarchy means asking the right questions in the right order before replacing any piece of equipment.
For an organization (business, non-profit, public institution), the levers are broader and more powerful: a purchasing policy that favours refurbished equipment, a maintenance policy that extends the lifespan of equipment fleets, and secure transfer channels to certified refurbishers before recycling is even considered.
