Potential Biosorbent Derived from Calligonum polygonoides for Removal of Methylene Blue Dye from Aqueous Solution

Table 2

Surface properties of C. polygonoides ash.

Surface properties	Values
BET surface area	4.3810 m^2⋅g^−1
Average pores volume	0.016691 cm^3⋅g^−1
Average pore diameter	152.56 Å