According to the World Business Council for Sustainable Development (WBCSD), water is the first material used in the world. This liquid gold is an essential resource for the ecosystem, the biodiversity which humans and more generally the earth. Unfortunately, in many part of the world polluted water is a sad reality. That’s why it’s already the challenge of yesterday.
One of most used method to clean up water is activated carbon. “It is a form of carbon processed to have small, low-volume pores that increase the surface area available for adsorption or chemical reactions.”
Usually, activated carbon is derived from charcoal and increasingly biochar based on biomass, wood and crushed wood which are more benefic for environment. Nevertheless, pyrolysis is an energy-guzzling process. Consequently, the choice of the source of energy is a major stake.
So the concept is to use our wood chips to transform them in activated carbon via pyrolysis feed by renewable energy.
One choice of renewable energy:
Solar energy is a new approach proposed in recent studies to assist fast pyrolysis. Combined or not with other sources, the main goal is to limit the pollution by a reduction of emissions as presented in the link. Beyond the pyrolysis and charcoal, every part of the “reaction” can be optimized and used. The third photo resumes an example of process.
Environmental asset and example:
Water is everywhere and in connections with each part of our environment. So how can evaluate or illustrate all the range of possibilities? Nonetheless, for example today it is used for drinking water, waste water. There are also experimentations to clean water in contact with nuclear materials.
In spite of a strong consumption of energy, with a good process, low emissions can be obtained. If this process is not necessary the most economic, there are no doubt that it is a big improvement for the environment and the ecosystem.