Fluoride Removal from Aqueous Solutions by Cupricoxide Nanoparticles
نویسندگان
چکیده
ABSTRACT: Excess fluoride ion (F) in drinking water causes harmful effects such as dental and skeletal fluorosis. Hence, its concentration in drinking water must not exceed a certain range. This study investigated the removal of F from aqueous solutions with CuO nanoparticles using a range of experimental approaches, including pH, adsorbent dose, contact times, and initial F concentration. The equilibrium adsorption data were analyzed using the Langmuir and Freundlich adsorption models. The maximum uptake value of F was 3152 mg/g at pH 5 during 40 min with 0.005 g/L nanoparticles of CuO and an initial F concentration of 5 mg/L. The fluoride adsorption equilibrium over the adsorbent was well described by the Freundlich model. The findings of this study showed that CuO nanoparticles are quite effective for F removal from aqueous environments. Thermodynamic analyses showed that the adsorption of F onto CuO nanoparticles was endothermic and spontaneous.
منابع مشابه
Fluoride Removal from Aqueous Solutions by NaOH-Modified Eucalyptus Leaves
Introduction: Fluoride (F) and its compounds are widely used in industries in which fluoride overdose leads to various detrimental diseases. In this study the effect of NaOH-modified Eucalyptus leaves on fluoride removal from aqueous solutions as a natural adsorbent was investigated. Materials and Methods: The focus of this study was on the effects of parameters such as pH (2-12), initial conc...
متن کاملDefluoridation of Aqueous Solution by Graphene and Graphene Oxide Nanoparticles: Thermodynamic and Isotherm Studies
Fluoride, a non-essential element, can enter water resources through several natural processes and human activities. The benefits and risks of fluoride depend on the concentration of this anion on drinking waters. In the present study, the performances of graphene and graphene oxide nanoparticles were investigated for the removal of fluoride from aqueous solution. In the present resea...
متن کاملPhotocatalytic process using magnesium oxide nanoparticles for amoxicillin removal from aqueous solution
Background & Aim: Excessive consumption of antibiotics and their incomplete metabolization in human and animals, as well as inadequate removal by conventional waste water system leads to the release of these chemicals into the environment. Antibiotics have adverse effects including bacterial resistance, digestive disorders and genotoxic. Therefore the aim of this study was to survey amoxicillin...
متن کاملSynthesis of Magnesium Oxide Nanoparticles and Their Application in Removal of Tetracycline Antibiotic from Aqueous Solutions
Background: Magnesium oxide is one of the alkaline earth metal oxides which due to its catalytic properties has been widely used in the analysis of hazardous chemicals. The main purpose of this study was to remove tetracycline antibiotics using magnesium nano oxide. Methods: In this study, magnesium oxide nanoparticles were synthesized in the presence of cetyl trimethyl ammonium bromide. Synth...
متن کاملPhotocatalytic Activity of ZnO Nanoparticles (Bare, Doped and Co-doped with Mg and La) in the Removal of Rhodamine B from Aqueous Solutions by UVC Irradiation
Background & objectives: The organic dyes are environmental pollutants that pour into water sources by industrial wastewater. It is necessary to develop effective methods for removing pollutants. The aim of this study was to evaluate photocatalytic efficiency of bare ZnO nanoparticles doped with Mg and La (1 to 6% by weight) and Mg 5% -La 5% / ZnO and Mg6%-La4% / ZnO nanoparticles in the remova...
متن کامل