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International Journal of Environmental Analytical Chemistry Volume 102, 2022 - Issue 5
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Original Articles

Highly efficient removal of congo red and methyl orange by using petal-like Fe-Mg layered double hydroxide

Rida Shabbira Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, ChinaORCID Iconhttps://orcid.org/0000-0002-8685-8985View further author information
ORCID Icon,
Aotian Gua Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, ChinaView further author information
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Jiuyu Chena Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, ChinaView further author information
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Muhammad Musaa Khana Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, ChinaView further author information
,
Peng Wanga Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, ChinaView further author information
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Yan Jiaob Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Nanjing University of Information Science & Technology, Nanjing, ChinaView further author information
,
Zongxiang Zhangc Jiangsu Environmental Protection Key Laboratory of Monitoring for Organic Pollutants in Soil, Taizhou Environmental Monitoring Center, Taizhou, ChinaView further author information
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Ying Liua Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, China;b Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Nanjing University of Information Science & Technology, Nanjing, ChinaView further author information
&
Yi Yanga Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, China;b Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Nanjing University of Information Science & Technology, Nanjing, ChinaCorrespondence[email protected]
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Pages 1060-1077 | Received 16 Jan 2020, Accepted 06 Feb 2020, Published online: 18 Feb 2020
 
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ABSTRACT

In this work, petal-like Fe-Mg layered double hydroxide (LDH) was fabricated by a simple solvothermal method. A well-defined petal-like shape was observed in SEM and TEM characterisations. The ability of petal-like Fe-Mg LDH for the removal of congo red (CR) and methyl orange (MO) in aqueous solution was investigated. The prepared LDH was characterised with XRD, FTIR, TGA and BET surface area analysis. Various parameters such as initial dye concentration, pH, temperature, and contact time were examined. Moreover, the reusability of adsorbent was investigated and promising results were obtained. The maximum adsorption capacity of Fe-Mg LDH was found to 894.71 mg/g and 370.36 mg/g for CR and MO, respectively. The experimental results showed the adsorption data on optimal conditions were found to follow the pseudo-second-order model with a high degree of correlation coefficient. These results demonstrate that the surface of LDH is homogeneous with the adsorption mechanism of monolayer uptake. The Fe-Mg LDH can be regenerated by calcination and can be efficiently reused up to 6 times after the adsorption of CR and MO.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [11205089]; Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials [KFK1504].

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