Evaluating the effectiveness of a hybrid sorbent resin in removing fluoride from water

Abstract

AB STRACT:In some regions of the world, the concentration of fluoride in groundwater is high. To reduce the amount of fluoride to acceptable drinking water standard, it is highly recommended to treat the water. Fluoride adsorption in aqueous solution by a hybrid resin was studied in this research because of its functional groups likeness with goethite. Kinetic data showed that F adsorption was rapid in the beginning and maximum uptake occurred in within 10 min and equilibrium reached within 100 min. The experimental results showed that fluoride adsorption was influenced by pH of solution and optimum operating pH was in the range of 3 to 5.5. Langmuir model was applicable to the present study and F ions were exchanged with hydroxide ions in nano-scaled structure on the surface of sorbent. This adsorbent with 61 % efficiency is suitable for the regions where F concentration is less than 4 mg/L.

Fluoride in Drinking Water in 31 Provinces of Iran

“…was found to be positive in groundwater of Dashtestan (Dobaradaran et al 2009b). Fluoride adsorption in aqueous solution by a hybrid resin was studied by Boldaji et al (2009), where this adsorbent had 61 percent efficiency for water with fluoride less than 4 mg/L (Boldaji et al 2009). Iran's drinking water standard is based on the guidelines recommended by the World Health Organization (WHO) on drinking water that contains less than 1.5 mg/L of fluoride.…”

Correlation between drinking water fluoride and TSH hormone by ANNs and ANFIS

“…There are ways to get fluoride, but water is the most important [11][12][13][14]. There are methods to remove fluoride from water that have been reported by researchers [15][16][17][18]. Peckham (2014a;2015b) stated that fluoride intake of more than 0.01 mg/kg body weight/day impacts thyroid gland function because it has adverse effects on iodine.…”

Lead removal from wastewater using fluted pumpkin seed shell activated carbon: Adsorption modeling and kinetics

“…Also, it can be produced from cheap and locally available materials (Ochonogor and Ejikeme, 2005;Ejikeme and Ochonogor, 2008;Mahvi, 2008;Okpareke et al, 2009). Ion exchange resins have also been used to remove heavy metals from wastewater (Boldaji et al, 2009;Rafati et al, 2010). The potentials of activated carbon from the seed shell of fluted pumpkin (Telfairia Occidentalis) in accomplishing this pollution abatement is investigated in this work in laboratory.…”