What Actually Happens After We Put Something in the Recycling Bin?

October 24, 2026

My visit to Reclaim recycling centre opened my eyes to the science, economics and hidden complexities behind something many of us do every day.

I recently had the opportunity to visit Reclaim, a recycling business in Aotearoa New Zealand, for a tour of its recycling facility. Unlike a previous visit I'd made to a council run recycling facility, this time we were able to go inside the factory and see more of what happens behind the scenes.

I went along thinking I already knew quite a bit about waste and recycling. After all, I've spent a lot of time researching sustainability, educating others and thinking about how we can reduce the amount of waste we produce. But there's something different about seeing a process in action and hearing from the people who work with it every day.

I came away with more questions than answers, a new appreciation for the complexity of recycling, and a reminder that there is so much more to waste education than teaching people which bin to use.

Recycling is much more complicated than we think

When we put something in the recycling bin, it's easy to assume that we've done our part and someone else will take care of the rest. But what actually happens next?

The material needs to be collected, transported, sorted and processed. It may need to be cleaned or separated from other materials. There needs to be suitable equipment to process it, and there needs to be a use for the material that comes out the other end. Every stage presents its own challenges.

One of the things that stood out to me during the tour was just how many different materials and waste streams need to be considered. We often talk about recycling as though it is one straightforward process, but paper, cardboard, plastics, metals and other materials all have different properties and processing requirements. Even within a single category, there can be significant differences.

Plastic is a good example. We often see the numbers on plastic packaging and assume they tell us whether something can be recycled. In reality, these numbers identify the type of plastic resin. They don't guarantee that an item is accepted by our local recycling system or that it can be economically processed into another product.

Different plastics have different chemical structures and properties. Colour, additives, labels, contamination and combinations of materials can also affect how an item is sorted and processed. Something can be technically recyclable without there being a practical system available to recycle it. And that distinction matters.

Why isn't everything recyclable actually recycled?

This was one of the biggest things I found myself thinking about after the tour. We tend to talk about recycling as an environmental solution, and of course recovering materials can help reduce the need for virgin resources. But recycling also has to work within an economic system.

Businesses have operating costs. They need people, machinery, transport, energy, maintenance and somewhere to send the materials they recover. They also need buyers for those materials. If processing a material costs more than the revenue it generates, recycling it may not be commercially viable under current conditions.

I can understand this from a business perspective. A recycling company cannot continue operating indefinitely if its costs consistently exceed its income. But it also leaves us with an uncomfortable question: what happens when something has environmental value but isn't financially worthwhile to recover?

This is where recycling becomes more than a conversation about individual choices. It becomes a conversation about infrastructure, markets, government policy, product design and who should bear the cost of managing waste.

The fact that a material isn't commercially viable to recycle doesn't mean it has no environmental value. It means that the system we currently have may not make recovering it financially practical. And that is an important distinction.

It also makes me question how much responsibility we place on individual consumers when the options available to us are shaped by decisions made much further upstream.

The role of manufacturers and consumers

Another idea that stayed with me was the relationship between the products manufacturers create and the materials consumers are willing to buy. We often focus on what happens at the end of a product's life. We ask whether it can be recycled, whether it belongs in the recycling bin, or whether we can find another use for it. But many of the challenges are influenced much earlier.

What materials were chosen? Could the product have been designed differently? Does it contain several materials that are difficult to separate? Will there be a market for it once it has been used?

Manufacturers have a significant influence over these decisions. At the same time, consumer preferences can influence what manufacturers produce. We may prefer packaging that is transparent, brightly coloured, lightweight or visually appealing. Those preferences can sometimes conflict with the requirements of material recovery.

This doesn't mean consumers are to blame for the recycling challenges we face. It means that waste is part of a much bigger system, and the decisions made at different stages are connected.

If we want to reduce waste, we need to think about more than what happens when we throw something away. We need to consider how products are designed, what materials they use, how long they last and what happens when they are no longer needed.

Recycling has an environmental footprint too

Something else I hadn't fully considered was the number of resources required to keep a recycling operation running. The facility itself needs machinery, forklifts, collection containers and vehicles. All of these things require materials, energy, maintenance and eventually replacement.

During the tour, we heard about efforts to extend the useful life of equipment, refurbish components and recover materials when items reach the end of their working lives. These are important considerations because the environmental impact of recycling doesn't begin and end with the material in the bin.

For example, when evaluating different recycling systems, researchers may consider energy consumption, transport, greenhouse gas emissions and the environmental impacts of producing new materials. This is one reason life cycle assessment is so useful. Rather than looking at just one part of a process, it provides a framework for assessing environmental impacts across defined stages of a product or system. It also reminds us to be careful with blanket statements.

Recycling can provide environmental benefits, but the extent of those benefits depends on the material, the process, the alternative being compared and the wider system involved. There is still a great deal of value in recycling. But understanding its limitations helps us make better decisions about how to manage resources in the first place.

Why recycling in New Zealand presents its own challenges

Living in Aotearoa New Zealand also adds another layer to this conversation. We're a relatively small country, geographically separated from many international markets. The amount and type of material we recover, the infrastructure available to process it, transport distances and the availability of buyers can all influence what happens to our waste.

A material may be technically recyclable, but establishing a facility to process it requires sufficient supply, investment, expertise and demand for the resulting product.

During the tour, we discussed the challenges of establishing domestic processing capacity for some materials. It made me think about the relationship between the waste we produce and the industrial systems required to recover it. Collecting material is only one part of the process. We also need somewhere for it to go.

This is why it's important to understand our local recycling systems rather than assuming that what works in another country will work in exactly the same way here. The details matter, and they can change as infrastructure, policies and markets change.

What does this mean for waste education?

This is probably the part of the tour that has stayed with me the most. As someone who educates others about waste and sustainability, I keep coming back to the questions we ask children.

We often teach children to sort waste, identify recyclable materials and put things in the correct bin. These are useful practical skills, but are we giving them opportunities to understand what happens beyond that point?

What if we explored why different materials behave differently? What if children investigated how organic matter decomposes, why some materials can be processed more easily than others, or how a product travels through a system before becoming waste? What if we asked them to think about why something might be technically recyclable but not accepted by their local recycling programme?

These questions connect waste education with science, engineering, economics and systems thinking. They also help children understand that environmental challenges rarely have one simple solution.

In early childhood, this might begin with exploring materials, noticing changes, asking questions and developing theories about where things come from and where they go.

In primary school, children can investigate material properties, explore decomposition, map the journey of a product and consider how decisions in one part of a system affect another.

The aim isn't to overwhelm children with the complexity of the adult world. It's to give them opportunities to develop curiosity, build understanding and ask increasingly thoughtful questions. And I think there's enormous potential here for educators.

There's still so much to learn

One of the things I love about sustainability education is that the more I learn, the more I realise how much there is to understand. Even after spending considerable time researching waste, I came away from this tour with questions I hadn't thought to ask before.

I want to learn more about the chemistry of different plastics, the processes used to recover materials, the economics of recycling and the science behind environmental impact assessments.

I also want to explore how we can translate this knowledge into meaningful learning experiences for children and practical support for educators. Because I don't think waste education needs to stop at teaching people to recycle. I think we can go further.

We can explore the materials around us, investigate what happens when they are discarded, examine the systems that manage them and ask why those systems work the way they do. We can acknowledge the value of recycling while also recognising that reducing waste, reusing products and designing things differently are important parts of the bigger picture. And we can help children understand that the world is full of interconnected systems, where the choices we make have consequences that aren't always immediately visible.

This tour has inspired me to dig deeper into the science and research behind waste, and to share what I learn along the way. I'll be exploring these questions through a new series for Eco Kids Collective, looking beyond the recycling bin to investigate the science, systems and stories behind waste in Aotearoa New Zealand.

Because sometimes, the most important learning begins when we stop and ask a simple question: What actually happens next?