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

• Main Authors: Mohammad Hossein Salmani, Mohammad Abedi, Seyed Ahmad Mozaffari
• Format: Article
• Language: English
• Published: Shahid Sadoughi University of Medical Sciences 2016-06-01
• Series: Journal of Community Health Research
• Subjects: Adsorption; Iron Modified Carbon; Pomegranate peel; Pb removal; Equilibrium Isotherm
• Online Access: http://jhr.ssu.ac.ir/browse.php?a_code=A-10-1117-6&slc_lang=en&sid=1

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 Fe2+ and Fe3+ 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 FeCl3 and FeCl2 solutions for 24 h. Then, the granules were carbonized at 400 ºC for 3 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 90 min, initial concentration 50 mg/l, and adsorbent dose, 1.00 g/100 ml solution. Maximum removal efficiency was calculated as 84% and 89% for Fe3+ and Fe2+ 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.