10 research outputs found
Denitrification of brackish water by electrodialysis: Effect of process parameters and water characteristics
Concentration effect and operational parameters on electrodialysis reversal efficiency applied for fluoride removal in groundwater
Surface modification of an anion exchange membrane to improve the selectivity for monovalent anions in electrodialysis – experimental verification of theoretical predictions
Efficient adsorption, removal and recovery of phosphate and nitrate from water by a novel lanthanum( iii
Comparison of different electrode materials for the nitrate electrocatalytic reduction in a dual-chamber cell
A Review on Adsorption of Fluoride from Aqueous Solution
Fluoride is one of the anionic contaminants which is found in excess in surface or groundwater because of geochemical reactions or anthropogenic activities such as the disposal of industrial wastewaters. Among various methods used for defluoridation of water such as coagulation, precipitation, membrane processes, electrolytic treatment, ion-exchange, the adsorption process is widely used. It offers satisfactory results and seems to be a more attractive method for the removal of fluoride in terms of cost, simplicity of design and operation. Various conventional and non-conventional adsorbents have been assessed for the removal of fluoride from water. In this review, a list of various adsorbents (oxides and hydroxides, biosorbents, geomaterials, carbonaceous materials and industrial products and by-products) and its modifications from literature are surveyed and their adsorption capacities under various conditions are compared. The effect of other impurities on fluoride removal has also been discussed. This survey showed that various adsorbents, especially binary and trimetal oxides and hydroxides, have good potential for the fluoride removal from aquatic environments