سال انتشار: ۱۳۹۰

محل انتشار: اولین همایش ملی نانومواد و نانو تکنولوژی

تعداد صفحات: ۸

نویسنده(ها):

Faezeh Shams – Department of Chemistry, SavehBranch , Islamic Azad university, Saveh, Iran
Hasan Bagheri – Department of Chemistry, Takestan Branch, Islamic Azad University, Takestan, Iran
Abbas Afkhami – Faculty of Chemistry, Bu-Ali SinaUniversity, Hamedan , Iran
Azam Ghorbanii – Department of Chemistry, SavehBranch , Islamic Azad university, Saveh, Iran

چکیده:

EDTA modified maghemite nanoparticles (EMMNPs) were prepared and characterized by SEM and XRD, measurements. The modified nanoparticles used to the removal of Co2+ from water samples.Theinfluences of different parameters including initial pH, dosage of adsorbent, amount of surfactant and contact time were, investigated in order to find the optimum conditions. Co2+ became adsorbed at pH 6. The adsorbed Co2+was then desorbed and determined by flame atomic absorption spectrometry. The experimental data were analyzed by the Langmuir and Freundlichadsorption models.It was shown that the sorbent can remove 97.9 % of the Co2+ within the first 30 min of contact time.