Significant improvement on selectivity and capacity of glycine-modified FeCo-layered double hydroxides in the removal of As (V) from polluted water

Xiaofeng Shi; Junmao Hong; Le Kang; Gang Song; Jing Lin; Xianmin Mai; Nithesh Naik; Zhanhu Guo

doi:10.1016/j.chemosphere.2021.130943

Significant improvement on selectivity and capacity of glycine-modified FeCo-layered double hydroxides in the removal of As (V) from polluted water

Xiaofeng Shi, Junmao Hong, Le Kang, Gang Song, Jing Lin, Xianmin Mai, Nithesh Naik, Zhanhu Guo

Department of Mechanical & Industrial Engineering Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

A series of novel Fe/Co layered double hydroxides modified with glycine (named as FeCo-LDH@G) were prepared and served as high-performance adsorbents for As (V). With a Fe/Co mole ratio of 1:1, the Fe_0·02Co_0.02-LDH@G adsorbents achieved significant improvements on the adsorption selectivity and capacity for As (V). The As (V) adsorption by Fe_0·02Co_0.02-LDH@G follows Langmuir isotherm model and pseudo-second-order kinetics model. The maximum adsorption capacity is 820 mg g⁻¹ and the equilibrium reaches in 120 min. Under the assistance of electrochemical devices, the Fe_0·02Co_0.02-LDH@G adsorbent was regenerated and the adsorption capacity for As (V) was dropped only about 13.41% in 5 cycles. These excellent performances make Fe_0·02Co_0.02-LDH@G as promising As (V) adsorbents for commercial wastewater treatments.

Original language	English
Article number	130943
Journal	Chemosphere
Volume	281
DOIs	https://doi.org/10.1016/j.chemosphere.2021.130943
Publication status	Published - 10-2021

All Science Journal Classification (ASJC) codes

Environmental Engineering
Chemistry(all)
Environmental Chemistry
Pollution
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.chemosphere.2021.130943

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title = "Significant improvement on selectivity and capacity of glycine-modified FeCo-layered double hydroxides in the removal of As (V) from polluted water",

abstract = "A series of novel Fe/Co layered double hydroxides modified with glycine (named as FeCo-LDH@G) were prepared and served as high-performance adsorbents for As (V). With a Fe/Co mole ratio of 1:1, the Fe0·02Co0.02-LDH@G adsorbents achieved significant improvements on the adsorption selectivity and capacity for As (V). The As (V) adsorption by Fe0·02Co0.02-LDH@G follows Langmuir isotherm model and pseudo-second-order kinetics model. The maximum adsorption capacity is 820 mg g−1 and the equilibrium reaches in 120 min. Under the assistance of electrochemical devices, the Fe0·02Co0.02-LDH@G adsorbent was regenerated and the adsorption capacity for As (V) was dropped only about 13.41% in 5 cycles. These excellent performances make Fe0·02Co0.02-LDH@G as promising As (V) adsorbents for commercial wastewater treatments.",

author = "Xiaofeng Shi and Junmao Hong and Le Kang and Gang Song and Jing Lin and Xianmin Mai and Nithesh Naik and Zhanhu Guo",

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doi = "10.1016/j.chemosphere.2021.130943",

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T1 - Significant improvement on selectivity and capacity of glycine-modified FeCo-layered double hydroxides in the removal of As (V) from polluted water

AU - Shi, Xiaofeng

AU - Hong, Junmao

AU - Kang, Le

AU - Song, Gang

AU - Lin, Jing

AU - Mai, Xianmin

AU - Naik, Nithesh

AU - Guo, Zhanhu

PY - 2021/10

Y1 - 2021/10

N2 - A series of novel Fe/Co layered double hydroxides modified with glycine (named as FeCo-LDH@G) were prepared and served as high-performance adsorbents for As (V). With a Fe/Co mole ratio of 1:1, the Fe0·02Co0.02-LDH@G adsorbents achieved significant improvements on the adsorption selectivity and capacity for As (V). The As (V) adsorption by Fe0·02Co0.02-LDH@G follows Langmuir isotherm model and pseudo-second-order kinetics model. The maximum adsorption capacity is 820 mg g−1 and the equilibrium reaches in 120 min. Under the assistance of electrochemical devices, the Fe0·02Co0.02-LDH@G adsorbent was regenerated and the adsorption capacity for As (V) was dropped only about 13.41% in 5 cycles. These excellent performances make Fe0·02Co0.02-LDH@G as promising As (V) adsorbents for commercial wastewater treatments.

AB - A series of novel Fe/Co layered double hydroxides modified with glycine (named as FeCo-LDH@G) were prepared and served as high-performance adsorbents for As (V). With a Fe/Co mole ratio of 1:1, the Fe0·02Co0.02-LDH@G adsorbents achieved significant improvements on the adsorption selectivity and capacity for As (V). The As (V) adsorption by Fe0·02Co0.02-LDH@G follows Langmuir isotherm model and pseudo-second-order kinetics model. The maximum adsorption capacity is 820 mg g−1 and the equilibrium reaches in 120 min. Under the assistance of electrochemical devices, the Fe0·02Co0.02-LDH@G adsorbent was regenerated and the adsorption capacity for As (V) was dropped only about 13.41% in 5 cycles. These excellent performances make Fe0·02Co0.02-LDH@G as promising As (V) adsorbents for commercial wastewater treatments.

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VL - 281

JO - Chemosphere

JF - Chemosphere

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ER -

Significant improvement on selectivity and capacity of glycine-modified FeCo-layered double hydroxides in the removal of As (V) from polluted water

Abstract

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UN SDGs

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