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ISSN: 2333-9721
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-  2017 

Elimination of hazardous fluoride from drinking water using Tha??Mn nanoadsorbent

Keywords: Fluoride, adsorption, nanoadsorbent, efficiency Influence of the pH (a) and contact time (b) on fluoride adsorption capacity. Influence of the adsorbent dose (a) and initial fluoride concentration (b) on fluoride adsorption capacity FTIR spectrum of Th-Mn nanoadsorbent before fluoride adsorption. FTIR spectrum of Th-Mn nanoadsorbent after fluoride adsorption XRD pattern of Th-Mn nanoadsorbent before (a) and after (b) fluoride adsorption. Average particle size of nanoadsorbent before and after fluoride adsorption TEM images of nanoadsorbent before (a) and after (b) fluoride adsorption. Raman spectrum of Th-Mn nanoadsorbent before fluoride adsorption. Raman spectrum of Th-Mn nanoadsorbent after fluoride adsorption. Surface area and Da??A pore size of nanoadsorbent BET surface area plots where, pink line presents before fluoride adsorption, blue line presents after fluoride adsorption. Linear model of Langmuir isotherm. Linear model of Freundlich isotherm

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Abstract:

Herein, we have developed Tha??Mn nanoadsorbent for the removal of fluoride from aqueous systems. The adsorbent presented high surface area (156.864 m2 /g) and small pore size (13.3 ??) demonstrating the high porosity of the nanoadsorbent. The adsorbent surface morphology has been characterized by XRD, TEM, BET, and Raman techniques. The fluoride adsorption mechanism was confirmed by FTIR studies. The fluoride uptake conditions were optimized using batch studies. The batch results demonstrated maximum adsorption efficiency (85%) at pH 6 within 85 min. The adsorption isotherms were well fitted by the Freundlich isotherm model (R2 > 0.870). The nanoadsorbent presented excellent regeneratability (up to 95%) with an alkali solution. The property of regeneration and reusability makes it a smart sustainable material for fluoride removal

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