3 April 2020

Time to prioritise the glass recycling process

As FEVE’s ‘Close the Glass Loop’ recycling scheme is finalised, now is the time to prioritise all aspects of the recycling process, writes UK glass recycling company Recresco’s director Timothy Gent.


OPINION: The European glass container federation FEVE has announced a major programme targeting a 90% glass collection for recycling rate in the EU by 2030. The ‘Close the Glass Loop’ programme is set to be launched in June of this year and is the industry’s proactive response to increased recycling targets for glass and packaging to 75% by 2030.

The European market currently collects around 76% “bottle to bottle” recycling; however, the UK falls short with a glass recycling rate reported as just 67.6% in 2017, lower than the rates for cardboard, paper and metal.

Timothy Gent is director of UK glass recycling company Recresco

When recycled in a closed-loop recycling system, glass bottles which have been used by consumers are re-melted in a furnace and used to produce new bottles quickly and effectively.

This process greatly reduces the need to use virgin raw materials and can be repeated again and again without any degradation to the product.

Glass is 100% recyclable and its green credentials make it a particularly attractive packaging material at a time when environmental impact is at the forefront of all our minds.

With less energy required to recycle glass than to manufacture it from raw materials, high quality glass recycling can have an extremely positive impact in reducing emissions.

Confusion

However, consumer confusion around recycling coupled with challenges in the recycling process means despite the sustainable nature of glass, much still finds its way into general household waste and onto landfill.

Much glass still finds its way into general household waste and onto landfill

Glass is infinitely recyclable but once in landfill, it takes up valuable space and never decomposes, making it crucial that it is disposed of correctly in recycling containers.

The Waste and Resource Action Programme (WRAP) research conducted in 2019 found that just one in five councils in England provides a complete recycling service with the government accepting it will not meet the targets set for 2020.

The industry framework for greater consistency in household recycling in England was published in September 2016 and included a vision that by 2025 recyclable packaging would be clearly labelled and there would be a common set of materials for recycling for all homes in England including paper, card, plastic bottles, plastic pots, tubs and trays, glass and metal packaging, cartons and food waste.

Despite these efforts, consumers still find recycling guidelines confusing with inconsistent and complex rules often leading to mistakes in which items can and cannot be placed in kerbside collections and deposit facilities.

Understanding

A lack of understanding of the complicated process which follows glass collection is another issue with the challenges of glass recycling not often highlighted.

For glass to be recycled effectively, a lengthy and complicated process must be followed

When glass containers are mixed with other dry recyclables including plastic, paper and cardboard, they become contaminated, rendering them unsuitable for recycling into a high-quality product.

For glass to be recycled effectively, a lengthy and complicated process must be followed whereby collected glass is processed into cullet for use in new products.

Once glass is collected and sent to a glass treatment plant, it must be cleaned and sorted, ready for remelt.

This ‘middle-man’ process of separating, cleaning, colour sorting and extracting ‘foreign items’ to prepare glass for the manufacturing industry, is one that is often overlooked.

Closed loop processes recycle glass into the same high-quality product, offering the highest financial and environmental returns, and UK the market has surplus capacity to do so.

Technology

Although challenging, there is now innovative, advanced technology available that allows collected glass to be treated and recycled to the highest standard, without the need for manual labour.

Advanced equipment enables improved recovery rates from poorer quality MRF glass

State of the art colour sorting machinery and PLC controlled sorting systems are available but this technology currently remains underutilised in the UK today.

A major issue in glass recycling lies in maintaining quality of glass collected through co-mingled systems but new advanced equipment enables improved recovery rates from poorer quality MRF glass.

The machinery eases the burden of reprocessing mixed glass and removing contamination from kerbside and bottle banks making the 90% recycling target easily achievable.

If local authorities and the government hope to reach the ambitious targets currently being set, it is critical that investment and a real commitment is made into these enhanced technologies.

Recyclability

In terms of recyclability, glass has the ability to deliver a truly circular economy, turning waste glass into new bottles minimising the use of virgin raw materials and benefiting the environment.

Recycling glass is one of the many ways we can help reduce pollution and waste.

The economic and environmental benefits are obvious but it is imperative that businesses and government make a firm commitment by educating consumers and investing in the processes and technology that make this possible.

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