As the world’s population grows, the demand for food is growing as well. Therefore we need to handle our agricultural grounds with all love and care it needs. Fertilizers are essential in the optimization of the soils. In this project the effect of particle size in fertilizers was researched, especially in dried organic compounds like hay. Firstly the concentration of soluble content out of dead organic material in various particle sizes was looked at. After the first experiment the influence of particle size on water absorption and retainment was researched. In this manner water can be used as efficiently as possible, which leads to less water needs and higher yields. This shows why size matters.

Biomimicry is an art that uses processes that are found in nature to solve human problems. Biomimicry can be used to clean water. During this research, the problem-driven approach is used. This approach starts with the essence of a problem and follows various research steps to find a solution. The filtration processes that were put in practice were filtration through sedimentation, soil and plants. These processes showed the most potential from processes that were researched. The filtered water was then tested on various components.
The conclusion was that the design for a water filtration system that is broadly applicable and provides safe drinking water needs to be based on the filtration processes in the kidneys, soil and plants.

It is reasonably certain that microplastics are the most dangerous pollutants of plastic for aquatic organisms and humans. Thus far, there is not yet a large-scale system in place to eliminate microplastics from major bodies of water. In this report we describe different developmental phases of one such design and suggest possible applications. It is named ‘The Banana’, and takes its name from its distinctive shape.

The Blue Battery is an alternative storage medium in which electrical energy can be stored and extracted by reactions from a redox couple. When a Blue Battery is charged, energy, in the form of electrical energy, is added to energy-poor substances. The acid-base-salt fuel stack can serve as a sustainable alternative. The principle of this fuel stack is based on the properties of ion-selective membranes in combination with acidic, basic and saline solutions, whereby water can be split and formed without the formation of gas. The substances can be re-used and the battery could form an new alternative to store solar or wind energy on household level. In this way people can sustainable produce and store energy by using water.