Development of Kaolin Clay as a Cost-Effective Technology for Defluoridation of Groundwater

Table 1

Summary of BET surface area results of different particle sizes of adsorbents.

Particle size (mm)	Surface area of activated clay (m^2/g)	Surface area of raw clay (m^2/g)
<0.075	10.598	5.258
0.075–0.15	7.498	3.312
0.15–0.30	7.396	2.504