Details

Autor(en) / Beteiligte

• Igwegbe, Chinenye Adaobi
• Rahdar, Somayeh
• Rahdar, Abbas
• Mahvi, Amir Hossein
• Ahmadi, Shahin
• Banache, Artur Marek

Titel

REMOVAL OF FLUORIDE FROM AQUEOUS SOLUTION BY NICKEL OXIDE NANOPARTICLES: EQUILIBRIUM AND KINETIC STUDIES

Ist Teil von

• Fluoride, 2019-10, Vol.52 (4), p.569-579

Ort / Verlag

Dunedin: International Society for Fluoride Research, Inc

Erscheinungsjahr

2019

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• Fluoride (F) in high concentration is very hazardous to human health. The efficacy of nickel oxide nanoparticles (NiO NPs) was investigated in this research as an adsorbent for the elimination of fluoride from aqueous solutions. The effects of pH, contact time, initial concentration of F, and adsorbent dosage on the performance of NiO NPs in the removal of fluoride from aqueous solutions were investigated at room temperature. Langmuir, Freundlich, Temkin, Koble-Corrigan, and Redlich-Peterson adsorption isotherms were employed for the analysis of the adsorption process. Maximum adsorption was achieved at 60 min at pH 5, an adsorbent dosage of 0.02 g/L, and an initial fluoride concentration of 20 mg/L. The results also showed that fluoride adsorption by NiO NPs was more compatible with the Freundlich isotherm (R2 = 0.999). and that the process followed the pseudo-second-order kinetic, Ho (type I) (R2 = 0.9999 and R2 = 0.9997 at 20 and 25 mg/L fluoride concentrations, respectively). From the results obtained, it can be concluded that NiO NPs can be used with high efficiency for fluoride removal.