Adsorption Efficiency of Iron Modified Carbons for Removal of Pb(II) Ions from Aqueous Solution

سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 232

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شناسه ملی سند علمی:

JR_JCHR-5-2_008

تاریخ نمایه سازی: 11 مهر 1400

چکیده مقاله:

Abstract Introduction: The Lead causes severe damage to several systems of the body, especially to bony tissues. Until now, several low-cost biosorbents have been studied for removal of heavy metal ions from aqueous solutions. In the present study, carbonized pomegranate peels modified with Fe۲+ and Fe۳+ ions and then it was investigated for removal of Pb(II) ions from aqueous solution. Materials and methods: the washed granola of pomegranate peel was separately socked with FeCl۳ and FeCl۲ solutions for ۲۴ h. Then, the granules were carbonized at ۴۰۰ ºC for ۳ h in a programmable furnace in the atmosphere of nitrogen. The adsorption experiments were carried out for two types of iron-modified carbons by batch adsorption using one variable at a time procedures. Results: The optimum conditions were found as contact time ۹۰ min, initial concentration ۵۰ mg/l, and adsorbent dose, ۱.۰۰ g/۱۰۰ ml solution. Maximum removal efficiency was calculated as ۸۴% and ۸۹% for Fe۳+ and Fe۲+ impregnated pomegranate peel carbons respectively. Conclusion: The iron treatment pomegranate peel carbons modified their surfaces for adsorption of heavy metals. The results showed that chemical modification of the low-cost adsorbents originating from agricultural waste has stood out for metal removal capabilities.

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