Yapılan bir diğer çalışmada, içme suyunda mevcut floritin giderilmesinde ekonomik ve etkili çözümler üzerinde çalışmalar yapılmıştır. Çalışmada kaolin, kömür tozu, linyit, nirmali çekirdeği, bentonit materyalleri kullanılmış ve analizler neticesinde,

Florit giderimleri sırasıyla nirmali çekirdeğinde 6%, linyitte 8%,, kaolinde 18.2%, kömür tozunda 38%, bentonitte 46% olarak tespit edilmiştir. Bu neticeye göre florit giderimi açısından ekonomik olarak uygun öngörülen bentonit materyali, giderim kabiliyeti açısından da en iyi performansı göstermiştir.

A Study On Removal Of Fluorides From Drinking Water By Adsorption Onto Low-cost Materials
M. Srimurali, A. Pragathi, J. Karthikeyan
Department of Civil Engineering, College of Engineering, Sri Venkateswara University, Tirupati, A.P., India
Elsevier, Volume 99, Issue 2, 1998, Pages 285–289 Abstract: Various low-cost materials like kaolinite, bentonite, charfines, lignite and nirmali seeds were investigated to assess their capacity for removal of fluorides from water by batch adsorption studies. Studies were also conducted to determine optimum operating-system parameters; such as contact time, pH, dose and size of the adsorbent. Present study has indicated that materials like nirmali seeds and lignite are not effective (removal 6 to 8%); whereas removal by kaolinite clay was slightly higher (18.2%). Charfines and bentonite exhibited highest removal capacity of 38 and 46%, respectively, at optimum system conditions. Chemical pre-treatment of charfines did not result in enhanced removal of fluoride from water.