NDLI: Application of response surface methodology (RSM) for the removal of methylene blue dye from water by nano zero-valent iron (NZVI).

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Khosravi, Morteza Arabi, Simin
Description	Country affiliation: Iran Author Affiliation: Khosravi M ( Department of Chemistry, North Tehran Branch, Islamic Azad University, P.O. Box 1913674711, Tehran, Iran.); Arabi S ( Department of Chemistry, Safadasht Branch, Islamic Azad University, Safadasht, Iran E-mail: siminarabi1354@yahoo.com.)
Abstract	In this study, iron zero-valent nanoparticles were synthesized, characterized and studied for removal of methylene blue dye in water solution. The reactions were mathematically described as the function of parameters such as nano zero-valent iron (NZVI) dose, pH, contact time and initial dye concentration, and were modeled by the use of response surface methodology. These experiments were carried out as a central composite design consisting of 30 experiments determined by the 2(4) full factorial designs with eight axial points and six center points. The results revealed that the optimal conditions for dye removal were NZVI dose 0.1-0.9 g/L, pH 3-11, contact time 20-100 s, and initial dye concentration 10-50 mg/L, respectively. Under these optimal values of process parameters, the dye removal efficiency of 92.87% was observed, which very close to the experimental value (92.21%) in batch experiment. In the optimization, R(2) and R(2)adj correlation coefficients for the model were evaluated as 0.96 and 0.93, respectively.
File Format	HTM / HTML
ISSN	02731223
Issue Number	2
Journal	Water Science & Technology
Volume Number	74
e-ISSN	19969732
Language	English
Publisher	IWA Publishing
Publisher Date	2016-01-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Water Science and Technology

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