I need to the procedure/way for calculation pH, particle size, density, bulk density, Water Holding Capacity (kg/kg) specific surface area (m2/m3) and Void fraction (%) for these agriculture by product.
Rice husk, ground bagasse and maize stubble, peanut shells
The most important is Water Holding Capacity (kg/kg) specific surface area (m2/m3) and Void fraction (%)