TY - JOUR T1 - Removal of Acid Red 18 dye from Aqueous Solutions Using Nanoscale Zero-Valent Iron TT - JF - Iran-J-Health-Sci JO - Iran-J-Health-Sci VL - 3 IS - 3 UR - http://jhs.mazums.ac.ir/article-1-306-en.html Y1 - 2015 SP - 63 EP - 69 KW - Acid Red 18 (AR18) KW - Dye Removal KW - NanoscaleZero-Valent Iron N2 - Background 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 nanoscalezero-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 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. M3 10.7508/ijhs.2015.03.008 ER -