Paper and board manufacturers need large amounts of wood. But they also need oxygen. This gas plays an important role in the paper production process, where it is used to bleach wood pulp, the main ingredient in paper. In its natural state, cooked and compressed wood pulp is much too dark to write on. The lignin in the wood pulp would also soon cause the paper to lose its strength. It therefore has to be removed in a complex production step that requires large amounts of oxygen. Pressure swing adsorption plants from Linde Engineering are an energy-efficient way to generate this oxygen on demand at the point of use.