What goes around comes around: how the circular economy can reduce waste and address climate change

This week, the crucial COP26 summit gets under way in Glasgow. The meeting will bring together government leaders, climate experts and campaigners with the aim of agreeing coordinated action to tackle global climate change.

The discussions will be wide-ranging, covering major themes such as deforestation, renewable power generation, and electrification of transport. But although it might not hit the headlines, there’s another issue that could play a critical role in meeting climate change goals: the circular economy.

Producing, consuming and disposing of the products we use in our everyday lives accounts for nearly half of all greenhouse gas emissions. Cutting those emissions means upending the conventional “take-make-consume-dispose” model of growth, and designing waste out of our economy altogether.

In advance of the COP26 meeting, The Economist magazine hosted a webinar which focused on the potential of the circular economy for emissions reduction.

The challenges of going circular

Introducing the event, Vijay Vaitheeswaran, The Economist’s global energy and climate innovation editor, explained that the essence of the circular economy is about keeping materials in circulation and maintaining their utility. But how much of a Utopian dream is this, and what are the practical challenges that need to be overcome if this elegant theory is to become a reality?

In response, Federico Merlo, managing director of member relations and circular economy for the World Business Council for Sustainable Development, explained that, while changing business models to extend the life cycle of products would not be easy, the economic benefits of using and wasting fewer materials should drive business in the direction of the circular economy.

Jim McLelland, Sustainable Futurist at SustMeme, was concerned about possible resistance from consumers in changing their behaviour. Because many people equate consumption with ‘shopping’, they don’t consider the emissions generated during the journey of materials from design to finished product. This could result in friction in the transition to the circular economy.

But Kai Karolin Hüppe, sustainability & circular economy lead for Arthur D. Little management consultants, suggested consumers were becoming more curious about how the materials that made their products came to be in them. And once they know the impact of consumption, people can make informed buying decisions. 

She went on to explain how this is getting easier, thanks to new tools from the Greenhouse Gas Protocol and the Science Based Targets  initiatives, which can help to identify, measure and manage emissions throughout material life cycles. When the Kraft food company mapped out the sources of its own emissions, it discovered that over 90% were not directly generated by the business, but by indirect sources, such as suppliers and distributors.

Making plastic circular

In recent years, there has been much greater awareness about the environmental damage caused by plastic. One of the world’s biggest plastics manufacturers is Dow, and the company’s commercial vice president for packaging and specialist plastics took part in the webinar to outline how it’s addressing the issue.

Marco ten Bruggencate explained that, while Dow is taking sustainability seriously, the company needs to go much faster. Doing this means making sure the whole production process is addressed, from the way factories are powered to the use of renewable feedstocks to make bio based plastics. And now, Dow is looking at how to make plastics part of the circular economy by making sure that valuable waste is looped back into new packaging structures.

Raising awareness

Education has a vital role to play in the circular economy, and Jim McLelland highlighted an initiative that is providing the construction industry with greater understanding of sustainability issues.  The Supply Chain Sustainability School is funded by major construction contractors, and provides free access to training for suppliers and subcontractors in a range of disciplines, including common standards for sustainability. Jim noted that construction is responsible for 38% of global emissions, and a typical supply chain involves large numbers of materials and many microbusinesses in different countries and regions. The collective approach offered by The Supply Chain Sustainability School is an important contribution to a sustainable built environment.

Reversing the trend

Jim is one of the authors of the Circularity Gap Report, an annual progress report on the journey to a global circular economy. The first report, published in 2018, established that the world was only 9.1% circular. But the most recent report put the figure at 8.6% circularity.

It appears that the world is going in the wrong direction, but there are now signs that businesses are moving forward with their own ideas.

The packaging sector, for example, is exploring digital technologies that could drive a truly circular economy – such as blockchain to help with tracking material flows, and digital watermarking to enable better sorting of packaging waste.

And achieving circularity doesn’t mean a company has to completely rethink its business model. Global sportswear giant Nike was able to reduce the waste generated by one of its running shoes by 80% simply by talking to their supply chain.

Final thoughts

COP26 has been described as world’s last best chance to get runaway climate change under control. For all of us, the stakes could hardly be higher. Failure to limit global temperature increases to well below 2 degrees Celsius risks greater pressures on water and food supplies, increased hunger and poverty and more frequent flooding, storms and heatwaves that threaten plant, animal, and human life.

Yet if we were able to double the current 8.6% global circularity figure to achieve 17% circularity, that move alone would achieve the targets on global warming set out by the Paris COP meeting in 2015.

Whatever the outcome of the talks in Glasgow, it should now be clear that the circular economy is a vital element in fostering low-carbon growth. And it might even tip the balance in the battle against global warming.


Further reading on waste management from The Knowledge Exchange blog

Image: The Scottish Events Campus in Glasgow: location for COP26. Photo by Stephen O’Donnell on Unsplash

Recycling: is it worth it?

Discarding bag habits: England joins Scotland, Wales and Northern Ireland in charging for carrier bags

By James Carson

Plastic carrier bags have been part of Britain’s retail landscape since their introduction by supermarkets in the 1970s. Dispensed freely and liberally, the bags were originally made of polythene before evolving to the high density polyethylene (HDPE) bags most commonly in use today.

For decades, the plastics industry has been fighting off environmental campaigners’ claims that single-use bags are damaging to the environment and create a significant litter problem. But there have been increasing signs that the carrier bag’s days are numbered.

  • In 2002, the Republic of Ireland became the first country in Europe to introduce a tax on single-use carrier bags
  • In 2007, Italy banned the distribution of non-biodegradable plastic bags
  • In 2014, California became the first US state to prohibit stores from providing single-use plastic bags – subject to a 2016 referendum.

Next month, charges for carrier bags are being introduced in England. The 5p charge will come into force on 5 October, bringing England into line with the rest of the United Kingdom.

Wales

Wales was the first part of the UK to introduce charges for carrier bags, in 2011. The charge is part of the Welsh Government’s strategy to minimise the proportion of waste going to landfill to 5% by 2025, and eliminating it altogether by 2050.

An evaluation of the impacts of the charge on behaviour and attitudes of consumers found that it had helped to increase own bag use in Wales (from 61% to 82%) and was supported by a majority of the Welsh population. However, no evidence was found that the carrier bag charge led to behavioural spill-over to other waste-related behaviours.

Northern Ireland

The levy on single-use carrier bags was introduced in Northern Ireland in 2013. The charge has been a success story, with a 42.6% annual reduction in 2014 following a previous drop of 71%, after the carrier bag charge was introduced.

In 2013/14, £3.4m of the proceeds from the levy were spent on more than 250 projects delivered by the Northern Ireland Environment Link (NIEL) Challenge Fund, Natural Heritage grants, Sustainability Innovation Fund and Local Clean-Up Support projects.

Scotland

The Single Use Carrier Bags Charge (Scotland) Regulations came into force in October 2014. Before that, Scotland used more than 800 million new single-use carrier bags every year – the highest usage in the UK. Figures published this summer, however, showed that the number of plastic bags provided by supermarkets in Scotland fell by 147 million last year, despite the charge only being in place for the last 11 weeks of 2014.

Scotland’s environment minister, Richard Lochhead, hailed the results as “astounding”, and said the charge was driving behaviour change to tackle litter and reduce waste. Time will tell whether this impressive start can be maintained. After an initial fall in carrier bag usage during the first year of charging in 2011-12, Wales saw a 5.2% increase in usage during 2014.

England

From October, large shops in England will be required to charge 5p for all single-use plastic carrier bags. In 2013, the number of single-use bags from English supermarkets rose from 7.4 billion to just over 7.6 billion. It’s hoped that the forthcoming charge will be instrumental in cutting carbon emissions, and reducing litter.

However, the House of Commons Environmental Audit Committee (EAC) has described the English regulations as “a complete mess”  The MPs are especially unhappy at the exemptions for smaller retailers, and exclusion of biodegradable bags.

Only retailers with 250 or more full-time employees will have to levy the 5p charge for carrier bags, but trade bodies for smaller retailers say their members want to participate and claim that the exemption will distort competition and cause confusion.

The EAC believes that leaving biodegradable bags out of the scheme could harm the environment by causing litter and damage to wildlife.


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Further reading*

The single use carrier bag charge (House of Commons Library briefing paper no CBP7241)

Anatomy of a plastic bag

Consumer behavioural study on the use and re-use of carrier bags 2012: final report (Scotland)

The goods, the bag and the ugly (waste control)

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