Chemistry

Glycolate – also known as glycolic acid – is a basic chemical and serves as a starting material for the production of preservatives, polymers and medicines. Until now, the substance has been obtained from fossil raw materials, some of which are toxic. Researchers at the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology (FEP) in Dresden, Chemnitz University of Technology and Leipzig University are currently developing a sustainable process for glycolate production as part of the PhotoKon project.

Plastics are an integral part of everyday life – from packaging to technical components. Until now, however, they could only be produced using petroleum, which is not only a finite resource but also causes considerable environmental pollution during extraction and processing. As part of his doctoral thesis at Ruhr University Bochum, which was funded by the German Federal Environmental Foundation, Daniel Eggerichs therefore developed a process that enables genetically modified bacteria to produce plastic precursors from waste from the paper industry.

Whether in smartphones or computers, printed circuit boards are found in almost all electronic devices. They are made from non-renewable raw materials such as glass fibres and epoxy resin and are difficult to recycle. The figures speak for themselves: around 60% of the 62 million tonnes of electronic waste generated each year is circuit boards. 

Corn has been the dominant energy crop in Germany to date. However, its cultivation is problematic and is associated with soil erosion, nutrient leaching and, in particular, nitrate contamination of groundwater. An alternative could be the cultivation of the cup plant. Researchers at the University of Bayreuth have conducted a study showing the advantages of cultivating this plant for both energy production and the environment.

Industrial hemp is one of the few renewable raw materials that grows all year round. The plant also binds more CO₂ than trees and can replace wood as a source of raw material, thereby helping to protect forests. The Cologne-based start-up PAPACKS is also capitalising on these advantages. Since 2013, the company has been developing sustainable packaging based on fresh and recycled fibres – including industrial hemp. The range extends from egg boxes and cream jars to inlays and cardboard packaging for industry.

Manufacturers of conventional insulation materials mostly rely on synthetic or mineral substances, the production of which consumes a lot of energy and causes CO₂ emissions. At the Institute for Circular Economy of Bio:Polymers (ibp) at Hof University of Applied Sciences, researchers are working on a sustainable alternative in the ‘Mycobuild’ project: they want to put thermal insulation materials based on fungal mycelium into use and establish an industrial manufacturing process that is both ecological and energy-efficient.

Methanol is a valuable synthetic raw material in the chemical industry that is also used as a solvent and fuel. In future, methanol produced from plant-based raw materials and residues could replace some of the methanol currently based on fossil raw materials. However, this requires new processes that are less complex and energy-intensive than those used to date. Researchers at Friedrich-Alexander University Erlangen-Nuremberg (FAU) are now presenting a new method for sustainable methanol production from biomass.

Amsilk GmbH, based in Neuried, is considered a pioneer in industrial biotechnology. The team has developed a method in which microorganisms produce modified silk proteins. These can be further processed into powders, hydrogels, fibres and coatings. The biomaterials produced from these consist of 100% silk proteins and are completely biodegradable.

For years, researchers have been working on using bacteria to convert the greenhouse gas carbon dioxide into a raw material for the chemical industry. As part of the Unifying Systems in Catalysis (UniSysCat) Cluster of Excellence, researchers in Berlin have now succeeded in elucidating the molecular mechanism by which bacteria efficiently convert carbon dioxide (CO₂) into carbon monoxide (CO) for the first time. According to Christian Lorent's team at TU Berlin, this represents a breakthrough in catalysis research.

The majority of textile fibers are still made from petroleum-based raw materials. However, the production of biogenic fibers such as cotton also has a significant environmental impact. The textile industry is therefore increasingly turning to so-called regenerated cellulose fibers such as Lyocell, which are much more environmentally friendly to produce.