| نویسندگان | محسن مرادیان-مرضیه مرادیان-زهره برومند |
|---|
| تاریخ انتشار | 2013-9-01 |
|---|
| رتبه نشریه | علمی - پژوهشی |
|---|
| نمایه نشریه | ISC ,SID |
|---|
چکیده مقاله
Widespread arsenic contamination of mining wastewater of Zarshouran (West Azerbaijan province) has
led to a massive epidemic of arsenic poisoning in the whole of surrounding areas. It is estimated that
approximately all agriculture fields are being irrigated with the water that its arsenic concentrations
elevated above the World Health Organization’s standard of 10 parts per billion. A novel advanced
magnetic matter adsorbent using magnetite embedded within nanosized Fe3
O4
was prepared and applied
for separation of arsenic metal ion from aqueous solution. This adsorbent combines the advantages of
magnetic nanoparticles with magnetic separability and high affinity toward arsenic metal ions, which
provides distinctive merits including easy preparation, high adsorption capacity, and easy isolation from
sample solutions by the application of an external magnetic field. The adsorption behaviors of arsenic
from an aqueous medium, using iron magnetite nanoparticles were studied by using equilibrium batch
and column flow techniques. The effects of pH, contents of loaded magnetic matter nanoparticles, ionic
strength, adsorbent dose, contact time, and temperature on adsorption capacity of the magnetic beads were
investigated. All the results suggested that the mentioned nanoparticles could be excellent adsorbents for
As(II) and As(III) contaminated water treatment.
