Removal of Acid Red 18 dye from Aqueous Solutions Using Nanoscale Zero-Valent Iron

A Yari, Nazari Sh, A Rastegar, S Alizadeh-Matboo, Majidi Gh, M Tanhaye-Reshvanloo
2015 Iranian Journal of Health Sciences   unpublished
and Purpose: Organic dyes with a complex structure are often toxic, carcinogenic, mutagenic, non-biodegradation and stable in the environment and if released to the environment without treatment can endanger the environment and human health. The aim was to evaluate the performance nanoscale zero-valent iron (NZVI) in the removal of dye acid red 18 (AR18) from aqueous solutions. Materials and Methods: This study was conducted at the laboratory scale. In this study, the removal efficiency of AR18
more » ... efficiency of AR18 from a synthetic solution by NZVI was investigated. As well as the effect of solution pH, dye concentration, the concentration of NZVI and contact time in decolorization efficiency was investigated. Results: The results show that in pH = 3, contact time of 80 minutes, dye concentration of 25 mg/l and concentration of NZVI of 2 g/l, the removal efficiency was about 94%. Conclusion: According to the results of experiments, NZVI has high efficiency in removal of AR18 from aqueous solution.
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