[Retracted] Investigation on Efficient Removal of Fluoride from Ground Water Using Activated Carbon Adsorbents

Table 2

Removal efficiency comparison between stock solution and groundwater.

Adsorbent	Removal efficiency (%)
	Stock solution	Groundwater
Neem powder	46.50	44.18
Rice husk powder	66.00	64.53
Coconut husk	85.00	82.55
Coconut shell charcoal	69.50	68.02
Neem stem charcoal	94.00	91.27