Pairing
When coupled use the use is of a by-product in addition to a main raw material or -produkts designated. In this way, sustainable and effective use of raw materials should be achieved. It is differentiated from cascade use , which refers to the use of a raw material over several stages.
The term joint use is mainly used for the use of agricultural raw materials. This can include uses in the food and feed industry as well as the use of renewable raw materials for material and energetic uses. Today, joint use is often understood to mean the parallel generation of products and / or energy from biomass.
Classic combined uses are the use of grain straw as a by-product of the grain harvest or of shives in the fiber production of flax and hemp , especially as animal bedding . The combined use of glycerine as a by-product of biodiesel production or of bagasse in the production of bioethanol has established itself as a combined use, particularly through the production of biofuels . The generation of process energy from the process waste during the conversion of biomass into products is also a combined use (combustion of lignin in paper production , biogas production from residues). The concept of the biorefinery tries to achieve a system that is as integrated as possible for the full use of biomass and all by-products for material and energetic use - this also represents a combined use.
As with cascade use, combined use can achieve both ecological and economic advantages such as lower pollution of the environment, saving of greenhouse gases , lower costs and higher added value.
Web links
- Announcement on the funding of applied research in the field of renewable raw materials within the framework of the federal government's funding program "Renewable Raw Materials" with a focus on "Innovative multiple use of renewable raw materials, biorefineries" from April 24, 2008 (PDF; 91 kB) with a short definition of combined use