Optimization condition of fluoride adsorption using activated clay. Issue 1 (April 2020)

• Record Type: Journal Article
• Authors: Mustakim, Z; Purwaningtyas, F Y; Leksono, E B; Sarto, ; Prasetya, A
• Is Part Of: IOP conference series. Volume 821:Issue 1(2020)
• Publication Date: 2020-04
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/821/1/012009
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: Drinking water which contain high concentration of fluoride can be harmful to teeth and bones. Clay was cleaned from its impurities then treated for 30 minutes at 700 o C and dissolved in HCl solution for 60 minutes. This research focused on the search for process conditions for absorbing fluoride dissolved in water bodies using local material-based adsorption methods using activated clay. The batch sorption experiment was carried out in 50 ml stirred glass contained 12.17 mg/L fluoride solution at operation temperature 25 o C, 35 o C and 45 o C, pH of 4, with 0.75 gr, 1 gr, and 1.25 gr of adsorbent weight. The solution samples were analysed by using visible spectrophotometer at 570 nm of the wavelength. From this research, the equilibrium reached in 60 minutes with 1.25 gr of adsorbent weight at operation temperature 45 o C with maximum 78% fluoride adsorbed. The isotherm models of fluoride removal mechanism fitted well of the Langmuir and Freundlich isotherm models and followed the pseudo second-order kinetics model.