Mn-Fe Layered Double Hydroxide Intercalated with Ethylene-Diaminetetraacetate Anion: Synthesis and Removal of As(III) from Aqueous Solution around pH 2–11

Liu, Guifeng; Zhu, Zongqiang; Zhao, Ningning; Fang, Yali; Gao, Yingying; Zhu, Yinian; Zhang, Lihao

doi:10.3390/ijerph17249341

Open AccessArticle

Mn-Fe Layered Double Hydroxide Intercalated with Ethylene-Diaminetetraacetate Anion: Synthesis and Removal of As(III) from Aqueous Solution around pH 2–11

by

Guifeng Liu

¹,

Zongqiang Zhu

^1,2,*

,

Ningning Zhao

¹,

Yali Fang

¹,

Yingying Gao

¹,

Yinian Zhu

^1,*

and

Lihao Zhang

¹

Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China

²

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China

^*

Authors to whom correspondence should be addressed.

Int. J. Environ. Res. Public Health 2020, 17(24), 9341; https://doi.org/10.3390/ijerph17249341

Submission received: 28 October 2020 / Revised: 8 December 2020 / Accepted: 10 December 2020 / Published: 14 December 2020

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Abstract

A novel adsorbent Mn-Fe layered double hydroxides intercalated with ethylenediaminete-traacetic (EDTA@MF-LDHs) was synthesized by a low saturation coprecipitation method. The behavior and mechanism of As(III) removed by EDTA@MF-LDHs were investigated in detail in comparison with the carbonate intercalated Mn-Fe layered double hydroxides (CO₃@MF-LDHs). The results showed that EDTA@MF-LDHs had a higher removal efficiency for As(III) than As(V) with a broader pH range than CO₃@MF-LDH. The large adsorption capacity of EDTA@MF-LDHs is related to its large interlayer spacing and the high affinity of its surface hydroxyl groups. The maximum adsorption capacity for As(III) is 66.76 mg/g at pH 7. The FT-IR and XPS characterization indicated that the removal mechanism of the As(III) on EDTA@MF-LDHs include surface complexation, redox, and ion exchange.

Keywords: LDHs; EDTA; As; redox reaction; ion exchange

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MDPI and ACS Style

Liu, G.; Zhu, Z.; Zhao, N.; Fang, Y.; Gao, Y.; Zhu, Y.; Zhang, L. Mn-Fe Layered Double Hydroxide Intercalated with Ethylene-Diaminetetraacetate Anion: Synthesis and Removal of As(III) from Aqueous Solution around pH 2–11. Int. J. Environ. Res. Public Health 2020, 17, 9341. https://doi.org/10.3390/ijerph17249341

AMA Style

Liu G, Zhu Z, Zhao N, Fang Y, Gao Y, Zhu Y, Zhang L. Mn-Fe Layered Double Hydroxide Intercalated with Ethylene-Diaminetetraacetate Anion: Synthesis and Removal of As(III) from Aqueous Solution around pH 2–11. International Journal of Environmental Research and Public Health. 2020; 17(24):9341. https://doi.org/10.3390/ijerph17249341

Chicago/Turabian Style

Liu, Guifeng, Zongqiang Zhu, Ningning Zhao, Yali Fang, Yingying Gao, Yinian Zhu, and Lihao Zhang. 2020. "Mn-Fe Layered Double Hydroxide Intercalated with Ethylene-Diaminetetraacetate Anion: Synthesis and Removal of As(III) from Aqueous Solution around pH 2–11" International Journal of Environmental Research and Public Health 17, no. 24: 9341. https://doi.org/10.3390/ijerph17249341

APA Style

Liu, G., Zhu, Z., Zhao, N., Fang, Y., Gao, Y., Zhu, Y., & Zhang, L. (2020). Mn-Fe Layered Double Hydroxide Intercalated with Ethylene-Diaminetetraacetate Anion: Synthesis and Removal of As(III) from Aqueous Solution around pH 2–11. International Journal of Environmental Research and Public Health, 17(24), 9341. https://doi.org/10.3390/ijerph17249341

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Mn-Fe Layered Double Hydroxide Intercalated with Ethylene-Diaminetetraacetate Anion: Synthesis and Removal of As(III) from Aqueous Solution around pH 2–11

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