Surface characteristics have investigated using N2 adsorption
isotherms. As observed in Table 4, the BET surface areas are low
(11–33 m2 g1) and macro and mesopores are mainly formed at
400 C, and microporosity is created in the material as pyrolysis
temperature is raised. Indeed, the surface area depends on the carbon
mass removed during the pyrolysis, creating pores in the
material whose size increases as temperature is increased [69].
Hence, upgrading this waste by-product into activated carbon will
improve BET surface areas, and therefore a valuable material will
be obtained with good adsorption properties for water and wastewater
treatment