Adsorption of Congo Red Dye from Aqueous Solutions by Montmorillonite as a Low-cost Adsorbent

被引：28
|
作者：
Khaniabadi, Yusef Omidi [1 ]
Basiri, Hassan [2 ]
Nourmoradi, Heshmatollah [3 ,4 ]
Mohammadi, Mohammad Javad [5 ]
Yari, Ahmad Reza [6 ]
Sadeghi, Shahram [7 ]
Amrane, Abdeltif [8 ]
机构：
[1] Ahvaz Jundishapur Univ Med Sci, Hlth Care Syst Karoon, Ahvaz, Iran
[2] Rural Water & Wastewater Co, Semnan, Iran
[3] Ilam Univ Med Sci, Biotechnol & Med Plants Res Ctr, Ilam, Iran
[4] Ilam Univ Med Sci, Sch Hlth, Dept Environm Hlth, Ilam, Iran
[5] Abadan Sch Med Sci, Abadan, Iran
[6] Qom Univ Med Sci, Res Ctr Environm Pollutants, Qom, Iran
[7] Kurdistan Univ Med Sci, Environm Hlth Res Ctr, Sanandaj, Iran
[8] Ecole Natl Super Chim Rennes, CNRS, UMR 6226, 11 Allee Beaulieu,CS 50837, F-35708 Rennes 7, France
来源：
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING | 2018年 / 16卷 / 01期
关键词：
adsorption; montmorillonite; Congo red; kinetic; isotherm; ACTIVATED CARBON; EQUILIBRIUM ISOTHERM; REMOVAL; WATER; KINETICS; BATCH; AHVAZ;
D O I：
10.1515/ijcre-2016-0203
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this study, the sorption of Congo red (CR), as a toxic dye, from aqueous media was investigated using montmorillonite (MMT) as a low-cost adsorbent. The influence of several factors such as contact time, pH, adsorbent dosage, dye content, and ionic strength was investigated on the dye removal. MMT was characterized by Fourier transformed infrared (FTIR) spectroscopy and X-ray diffractometer (XRD). Different kinetic and isotherm models including pseudo-first and pseudo-second order kinetic and Langmuir and Freundlich were applied to analyze experimental data, respectively. The results showed that the data were well fitted by pseudo-second-order kinetic and Freundlich isotherm models. The optimum conditions for the sorption of CR were achieved over 40 min and at pH=2. According to the results of the present study, MMT can be used as a low-cost, eco-friendly and effective option for the adsorption of CR from aqueous solutions.
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页数：11
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