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Carbon Utilisation

Material Use

The element carbon is a key component for life as well as for our society. Organisms, even if they take on completely different forms from the smallest bacterium to the mighty blue whale, are almost without exception composed of 45-50% carbon in terms of dry biomass. Carbon is also the basic element for many facets of life as we know it today. We constantly use a variety of carbon-based substances in our daily lives. We clothe ourselves in carbon-based materials and run our cars on carbon-based liquid fuels. Due to the very special properties of carbon, industrial societies will continue to be dependent on the use of carbon-based raw materials and energy sources in the future. A long-term secure and climate-neutral supply of raw materials and energy sources requires a switch to regenerative carbon sources as well as the increasing closure of anthropogenic carbon cycles (Figure). The term “Closed Carbon Cycle Economy” was coined at the Ruhr University Bochum (RUB).

Utilisation

Currently, the use of fossil raw materials is associated with enormous anthropogenic greenhouse gas emissions. Only if the economic system is converted to closed carbon cycles, many of the associated problems can be solved. Above all, the atmosphere must not be further polluted by carbon dioxide and other greenhouse gases. This is where the EU's commitment, binding under international law, to reduce emissions of greenhouse gases, above all carbon dioxide (CO2), by 40% by 2030 compared to the reference year 1990, comes into play. The former coal state of North Rhine-Westphalia is particularly affected by this structural change. The climate protection roadmap aims to reduce CO2 emissions from lignite by 40 to 50% by 2030. The necessary reduction in the proportion of lignite used for electricity generation could compensate for new uses and at the same time contribute to increased value creation. The focus here is on the developing new value chains that are in line with the overarching goals of the energy transition. In a comparative evaluation of the different options, all available carbon sources must be considered so that the course can be set optimally. The energy turnaround, the transition from the use of fossil fuels to the increased use of renewable energy sources and sustainable economic activity, is still not self-sustaining per se.