Dicarboxylic acid cross-linked metal ion decorated bentonite clay and chitosan for fluoride removal studies
Ammavasi Nagaraj, Kriveshini Pillay, Kishor Kumar Sadasivuni, Mariappan Rajan
Abstract
. Batch adsorption studies were conducted to establish the effect of various parameters such as contact time, pH, initial concentration, and competitor ions. The adsorption isotherms of Freundlich, Dubinin-Radushkevich, and Langmuir were studied and the Freundlich isotherm fitted the data well. Kinetic studies showed that the adsorption process follows pseudo second order kinetics. Thermodynamic studies revealed that the fluoride adsorption process is spontaneous and endothermic. Reuse and regeneration studies were executed for effective application of the nanocomposite. The synthesized adsorbent also has potential for real water treatment applications.
Topics & Concepts
BentoniteFluorideChitosanMetalChemistryMetal ions in aqueous solutionClay mineralsIonInorganic chemistryNuclear chemistryChemical engineeringMaterials scienceMineralogyOrganic chemistryEngineeringFluoride Effects and RemovalEsophageal and GI PathologyDental Health and Care Utilization