Synthesis of magnetite nanoparticles and evaluation of its efficiency for arsenic removal from simulated industrial waste water
Iranian Journal of Environmental Health Science and Engineering. 2011; 8 (3): 189-200
in English
| IMEMR
| ID: emr-137342
ABSTRACT
In this study the efficiency of magnetic nanoparticles for removal of trivalent arsenic from synthetic industrial wastewater was evaluated. The nanoparticles was prepared by sol-gel method and characterized by X-ray methods including XRD, XRF, and SEM, and vibrating sample magnetometer [VSM]. The results showed that synthesized nanoparticles were in the size range of 40-300 nm, purity of about 90%, and magnetization of nanoparticles was 36.5emu/g. In initial conditions including pH=7, As[III] concentration of 10 mg/L, nanomagnetite concentration of Ig/L, shaking speed of 250 rpm and 20 minute retention time, 82% of As [III] was removed. Competition from common coexisting ions such as Na[+], Ni[2+], Cu[2+], SO[4][2-], and Cl[-] was ignorable but for NO[3-] was significant. The adsorption data of magnetite nanoparticles fit well with Freundlich isotherm equations. The adsorption capacity of the Fe[3]O[4] for As [III] at pH=7 was obtained as 23.8 mg/g. It was concluded that magnetite nanoparticles have considerable potential in removal of As [III] from synthetic industrial wastewaters
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Index:
IMEMR (Eastern Mediterranean)
Main subject:
Arsenic
/
Water Pollutants, Chemical
/
Water Purification
/
Adsorption
/
Efficiency
/
Ferrosoferric Oxide
/
Industrial Waste
Language:
English
Journal:
Iran. J. Environ. Health Sci. Eng.
Year:
2011
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