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The influence of quality for tinplate recycling. While separate collection results in average scrap grades, the scrap from MSWI plants (without subsequent processing) is of a low quality. This has a major impact on electricity consumption in the recycling sector.

Source:

Melanie Haupt, ETH Zürich (basierend auf Haupt et al. (2017))

On the one hand, the industrial sector should be required to use a minimum share of recycled materials in certain products. On the other, the secondary materials must also meet clearly defined, market-compliant quality standards.

The secondary production of materials from waste through recycling often requires much less energy than production from primary raw materials. To enable high-quality secondary materials to be produced, however, everyone involved is called upon to contribute. Waste needs to be collected as cleanly as possible and the collected materials must be processed into marketable secondary materials at the sorting and recycling centres, taking account of the respective quality requirements.

But this is not the end of the chain. To allow recycling to exploit fully its indirect energy-saving potential, it must also be ensured that the secondary materials in manufacturing industry replace raw materials of the highest possible quality. In order to facilitate this, recycling companies should create common quality standards for their secondary products which make marketability easier and transform the image of recycled products. In addition, however, political assistance is also required to promote the use of secondary materials. One example here is the EU regulation under which the content of new plastic packaging must comprise at least 25 % recycled material by 2025.

The following measures can help to increase the use of high-quality secondary raw materials:

  • “Green” procurement in the public sector
  • Targeted guidelines aimed at ensuring green procurement in individual industries
  • Specification of a minimum share of secondary materials in certain products and construction materials

All information provided on these pages corresponds to the status of knowledge as of 27.12.2019.

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  Source: Maja Wiprächtiger, ETH Zürich

Summary Waste offers great additional energy potential

The joint project “Waste management to support the energy turnaround” investigated how and to what extent waste management can support the transformation of the Swiss energy system. This synthesis integrates the findings on municipal solid waste management in eight thematic areas and derives seven core statements as well as nine recommendations for action for the relevant stakeholders.

Introduction Energy has only played a secondary role until now

This Swiss waste management system is characterised by large per capita volumes, high collection rates and its extremely federal organisational structure. A problematic issue, from an energy-policy perspective, is the minor importance of energy and secondary product sales for the business success of waste incineration plants.

Challenges – cross-project findings Analysis of waste flows and relationships reveals potential

Challenges – core messages Optimise the worthwhile elements and the system as a whole

Plastic, paper and cardboard as well as the energy efficiency of MSWI plants are among those elements of the Swiss waste management system that offer the greatest potential for improvement. It is important to always consider the entire life cycle and the system as a whole when assessing improvement potentials and proposing future developments.

All information provided on these pages corresponds to the status of knowledge as of 27.12.2019. Publication details