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  • Dear Readers!

    There are some things in life that are unavoidable simply because it is impossible to foresee them. Other things though could have been prevented if those involved had been perhaps a little more mindful and taken that all important look ahead. Would the Titanic have hit the iceberg at full speed, if Captain Smith and his crew had seen the ice before it was too late? Very unlikely. They had received ice warnings but the ocean was calm and everyone was fine on board the ship. The majority of the passengers were in good spirits – right up until the collision happened. We humans are in a pretty similar position in the 21st Century. We have received warnings about the impending effects of climate change and we have been told that supplies of natural resources are already running low – and yet we are still sailing at full speed towards a head-on collision. Despite the fact that the UN recently officially confirmed that the world’s population will have reached 10 billion people by 2050. 10 billion who will all want to live as comfortably as we Europeans already do today with our 22-tonne consumption of raw materials per capita per year. China, for example, currently only consumes 11 tonnes per person per year. We continue, for the most part, to turn a blind eye to the fact that our planet simply does not have enough raw materials for such a scenario and – even if there are sufficient supplies of some materials – it would not be particularly smart to continue to mine and consume them in such large quantities if the problems of climate change are to be overcome. 

    Maybe human nature lies at the root of the problem. Our lives run in a straight line – from when they begin, to when they end. Linear thinking is in our genes so to speak. And this is precisely how we have always developed and made our products since we used the very first axe. From the idea at the beginning, to using the product, all the way through to the final moment when the product is broken and can no longer be used. There is no afterwards. If a sustainable economy is to be created, however, it is high time that this line is transformed into a circle.

    Practicable solutions to solving our supply problems have been around for a long while now. All around the world, people have been carrying out research work to find new technologies and better systems to enable raw materials to be recovered so that they can be reused. Recycling must finally do what its name implies, i.e. create loops so that all raw materials can be returned to production cycles. Economic growth and the consumption of raw materials must become separate from one another. A few major steps must be taken before that is possible though. Firstly, an ecodesign directive needs to be introduced across Europe that not only places importance on energy efficiency (as is the case at the moment) but also on raw material efficiency and the recyclability of products. Secondly, far more money needs to be invested in researching, developing and setting up more and better sorting and recycling facilities to ensure the recovered raw materials are of the highest possible quality. And thirdly, politicians need to create incentives to encourage industrial businesses to use more recycled raw materials in their production processes. Digitalisation and e-mobility, in particular, need huge volumes of raw materials. The most environmentally friendly source – one that also allows us to remain independent – is recycled raw materials.

    Our steamship is still more or less intact but it continues to sail towards a head-on collision with Mother Nature. It is not too late to change course, though, if we reach the right conclusions and take some mindful and far-sighted steps towards more and better recycling. There are plenty of reasons to be optimistic – quite a few of which can be found in this issue. 


    Ludger Rethmann

The limitations of materials recycling

No matter how extensive the know-how and how modern the technology, there are still some substances that cannot be recycled for reuse. These also include substances and raw materials which were not designed to be recycled. These materials can be treated in a different way: namely to generate energy. The electricity, heat and process steam produced from non-recyclable waste are available 365 days a year, no matter what the weather – and such operations also make good environmental sense.

Waste as an RDF

    • Demand for energy is growing all around the world. Our planet’s supplies of fossil fuels will not, however, last forever. Generating energy from waste reduces our consumption of natural gas, crude oil and coal. Indeed, waste to energy is considered to be just as important as materials recycling when it comes to some types of hazardous industrial waste. The by-products of all thermal treatment operations contain components that can be recycled and reused. Metals can be recovered from the ash and gypsum from the filter dust; the slag can be used as substitute aggregate – all of which help conserve our supplies of primary raw materials.

    Recycling sewage sludge to produce energy is a further way of combating climate change and conserving natural re-sources. Dried sludge is a good substitute for fossil fuels such as brown coal or natural gas. What’s more, sewage sludge ash contains high levels of phosphorus which REMONDIS is able to recover with its patented processes.

International challenges

Looking around the globe, though, there are still many regions that do not have suitable plants for transforming waste into energy. In fact, there are some that do not even have an infrastructure in place for handling hazardous waste safely. International cooperation work is needed here to keep the people and their environment safe – for example by removing hazardous materials from illegal dumping sites so they can be properly disposed of using state-of-the-art technology. Or by transporting the materials to facilities which have the technological know-how, set-up and experience to deal with them. At the end of the day, we all share the same biosphere and hazardous situations and events should not be tolerated no matter how far away they may be from us.

Helping to secure energy supplies

  • REMONDIS has a share in a number of municipal waste incineration plants across Germany  which provide their respective regions with energy. The company transforms industrial waste  which is unsuitable for materials recycling into alternative fuels with a defined calorific value. What’s more, it operates waste-to-energy incineration plants for treating hazardous materials – such as SAVA in Brunsbüttel. This plant is one of the most modern and most environmentally friendly of its kind in Europe. The REMONDIS Group is also helping to drive forward waste-to-energy operations abroad, e.g. in Singapore.

Waste to energy – what needs to be done?

  • The following measures would enable more raw materials to be recovered:

    • Ensuring that non-recyclable waste is used to generate energy
    • Providing financial & operational support to set up waste-to-energy plants
    • Driving forward innovations to further improve efficiency levels & energy efficiency
    • Extending viable pre-treatment methods
    • Campaigning for a global landfill ban
    • Getting the most efficient plants to provide international help & protect our global environment
    • Accepting hazardous substances from abroad if the countries, in which they are produced, do not have environmentally compatible systems to dispose of them

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