removal of acid red 18 dye from aqueous solutions using nanoscale zero-valent iron

Authors

ahmad reza yari research center for environmental pollutants and department of environmental health engineering, school of public health qom university of medical sciences, qom, iran

shahram nazari department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran

ayoob rastegar department of environmental health engineering, school of public health, sabzevar university of medical sciences, sabzevar, iran

soudabeh alizadeh-matboo department of environmental health engineering, school of public health, ardabil university of medical sciences, ardabil, iran

abstract

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.

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Journal title:
iranian journal of health sciences

جلد ۳، شماره ۳، صفحات ۶۳-۶۹

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