Adsorption of Arsenic from Aqueous Solutions by Iron Filings and the Effect of Magnetic Field
Publish place: International Archives of Health Sciences، Vol: 3، Issue: 2
Publish Year: 1395
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IAHS-3-2_002
تاریخ نمایه سازی: 3 اسفند 1398
Abstract:
Aims Arsenic contamination of natural water resources has become an importantenvironmental problem in the world. The adsorption method by iron filings adsorbent orzero-valent iron was used. The study aimed to evaluate the efficiency of iron filings in arseniteremoval from polluted water and to investigate the effect of magnetic field on the process.Materials & Methods This interventional study was conducted in synthetically pollutedwater samples with certain arsenic concentrations. With regard to the initial arsenicconcentration (0.5 and 2mg/l), iron filings dosages (0, 2.5 and 5g/l), contact times (5, 10 and15min) and considering the samples before and after magnetic column, 108 samples wereprepared. Data was analyzed by paired sample T and one-way ANOVA tests.Findings The highest mean of removal efficiency at the initial arsenic concentration of0.5mg/l was seen at the iron filings of 5g/l and 10min contact time (87.7±10.0) and at theinitial arsenic concentration of 2mg/l was seen at the iron filings of 5g/l and 15min contacttime (86.3±8.4). At the initial arsenic concentration of 0.5mg/l, magnetic field increased theremoval efficiency of arsenite at the iron filings dosage of 0g/l and decreased it at the ironfilings dosage of 5g/l. The same happened at the initial arsenic concentration of 2mg/l.Conclusion Arsenic is reduced from the water samples with the iron filings dosage of 5g/l atnatural pH. Magnetic field increases the arsenic removal efficiency in the absence of the ironfilings and decreases the arsenic removal efficiency in the presence of the iron filings.
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Authors
M.B Miranzadeh
PhD, ۱Environmental Health Engineering Department, Health Faculty, Kashan University of Medical Sciences,Kashan, Iran
M Naderi
MSc, Environmental Health Engineering Department, Health Faculty, Kashan University of Medical Sciences,Kashan, Iran
H Akbari
PhD, Biostatistics & Public Health Department, Health Faculty, Kashan University of Medical Sciences, Kashan, Iran
A Mahvi
PhD, Environmental Health Engineering Department, Health Faculty, Tehran University of Medical Sciences, Tehran, Iran
V Past
MSc, Environmental Health Engineering Department, Health Faculty, Tehran University of Medical Sciences, Tehran, Iran