METHOD FOR REMOVAL OF FLUORIDE FROM WATER THROUGH ADSORPTION

Abstract The present disclosure relates to a method to prepare an aluminium impregnated palm kernel shell (AIPKS) enriched with calcium for removal of fluoride from water through adsorption. The method comprises, collecting the palm kernel shell and removing unwanted soluble components by washing several times with hot water; drying the palm kernel shell for removing moisture to keep it in a muffle furnace for 45 minutes at 573K; washing the ash from the muffle furnace in distilled water and drying it at 323k for 24 hours in an oven and then sieving the ash through a mesh of size 150mm; combining 50 g of the palm kernel shell ash with 0.3 M of 250 ml aluminium sulphate solution in a stirred reactor tank until thoroughly stirred; adding 1 M sodium hydroxide solution to the mixture and stirring at 200-300 rpm in the stirred reactor tank, wherein 1 M sodium hydroxide solution is added until pH is between 4 to 6; filtering the entire slurry and drying it at 380 K to obtain the desired adsorbent or aluminium impregnated palm kernel shell (AIPKS); washing AIPKS thoroughly in double distilled water to extract all sodium sulphate before being dried in the oven for future use. N * W O oN Q ) o ot MI r-p a C : 71 'A S Ii ;e ~ '2m' gr y - '¶- 'bS % I -v 2 ri SF P r 4rF = A2 1 F F ', r- e I FtR 2 r O * 2 .2 --s .h ~r~ r