Simultaneous Removal of Pb2+ and Cu2+ by SBA-15/di-Urea as a Nano Adsorbent

被引:0
|
作者
Mardvar, Arash [1 ]
Hajiaghababaei, Leila [1 ]
Ghasri, Allahgholi [1 ]
Reza, Mohammad [1 ]
Abkenar, Dehghan Shiva [2 ]
Badiei, Alireza [3 ]
Ganjali, Mohammad Reza [4 ,6 ]
Ziarani, Mohammadi Ghodsi [5 ]
机构
[1] Islamic Azad Univ, Dept Chem, Yadegar E Imam Khomeini RAH Shahre Rey Branch, Tehran, Iran
[2] Islamic Azad Univ, Dept Chem, Savadkooh Branch, Savadkooh, Iran
[3] Univ Tehran, Coll Sci, Sch Chem, Tehran, Iran
[4] Univ Tehran, Coll Sci, Ctr Excellence Electrochem, Sch Chem, Tehran, Iran
[5] Alzahra Univ, Dept Chem, Tehran, Iran
[6] Univ Tehran Med Sci, Biosensor Res Ctr, Endocrinol & Metab Mol Cellular Sci Inst, Tehran, Iran
来源
IRANIAN JOURNAL OF CHEMISTRY & CHEMICAL ENGINEERING-INTERNATIONAL ENGLISH EDITION | 2022年 / 41卷 / 01期
关键词
SBA-15/di-urea; Simultaneous removal; Pb2+; Cu2+; Wastewater; FUNCTIONALIZED-MESOPOROUS SILICA; HEAVY-METALS; FOOD SAMPLES; WASTE-WATER; EFFICIENT REMOVAL; AQUEOUS-SOLUTION; MODIFIED SBA-15; ADSORPTION; PRECONCENTRATION; LEAD;
D O I
暂无
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this study, the potential of SBA-15/di-urea nanoporous silica compound for the removal of Pb2+ and Cu2+ ions was investigated. The presence of organic groups in the silica framework of SBA-15/di-urea was demonstrated by the FT-IR spectrum. The functionalized product showed the BET surface area 518 m(2)/g and pore diameter 6.5 nm, based on adsorption-desorption of N-2 at 77 K. SEM revealed a rod-shaped morphology, and the TEM image showed an ordered array of 2D hexagonal mesoporous SBA-15. The ions in the samples were identified by flame atomic absorption spectrometry. The effect of adsorbent amount, contact time, metal concentration, pH, and presence of other metals on removal efficiency has been studied. Simultaneous removal of Pb2+ and Cu2+ ions from 20 mL of the sample solution containing 60 mu g of each ion were completely done at pH greater than 5.0 after stirring for 15 minutes. Langmuir, Freundlich, and Temkin adsorption isotherms were evaluated for both adsorbates and it was determined that the data fitted well with the Langmuir model (R-2> 0.98). The maximum capacity of the adsorbent was found to be 147.0 +/- 0.6 mg and 77.0 +/- 0.5 mg of Pb2+ and Cu2+ ions/g SBA-15/di-urea, respectively. The lowest amount of 3M nitric acid for stripping the target species from adsorbent was determined as 20 mL. The application of this methodology for the real sample was tested by an Industrial wastewater sample.
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收藏
页码:163 / 173
页数:11
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