As a manufacturer that specializes in carbon's unique absorption capacity and slow-release technology, we build soil enhancer properties on a Bio-Carbon foundation.  The properties and characteristics of storage and release of Bio-Carbon hinges on the porosity or surface area resulting from a process of pyrolysis. 
Bio-Carbon is the result of heating alien plants/ invaders (or similar biomass) at extremely high temperatures in an oxygen-free environment.  This reaction, known as pyrolysis, combusts the lignin, carbohydrates, proteins, lipids, etc, leaving behind a porous carbon structure.  
The Bio-Carbon product range is, therefore, able to capitalize on this storage capacity for the retention and subsequent slow release of water, macro and micro-nutrient complexes to your crops in an 'on-demand' manner.
Due to the high surface area of Bio-Carbon (around one gram of Bio-Carbon - one teaspoon - contains the surface area of a sports field), the adsorption capacities are massive, to say the least (cation exchange capacity). Carbon’s adsorption capacity allows it to bond and holds onto molecules (liquid, solids, and gasses).  It is then possible for the carbon to release the stored molecules through either heat or agitation.
Bio-Carbon may look like charcoal but it isn’t made the same way, so don’t think that by dumping your fireplace ashes into your garden you'll receive the same results. The manufacturing process of Bio-Carbon creates its extremely high carbon level, it creates a high carbon level (80+% of Carbon Solutions Bio-Carbon is carbon and certified) and is therefore incredibly porous in nature.
Those pores are then able to retain water and provide micro-organisms an environment in which to grow and survive off of the existing nutrients in the soil. These natural biological interactions are essential for nitrogen to reach plant roots. As the bacteria thrive in the porous structure of the carbon so does natural soil health improve. Studies have also shown that a further benefit of Bio-Carbon includes a reduction of disease in the soil.