Synthesis of magnetite/non-oxidative graphene composites and their application for arsenic removal

Yeojoon Yoon; Mengliang Zheng; Yong Tae Ahn; Won Kyu Park; Woo Seok Yang; Joon Wun Kang

doi:10.1016/j.seppur.2017.01.025

Synthesis of magnetite/non-oxidative graphene composites and their application for arsenic removal

Yeojoon Yoon, Mengliang Zheng, Yong Tae Ahn, Won Kyu Park, Woo Seok Yang, Joon Wun Kang

Division of Environmental Engineering

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

64 Citations (Scopus)

Abstract

Since graphene-based materials have been investigated to adsorb many kinds of contaminants such as heavy metals especially arsenic, the fabrication costs of them are critically important for their application to the practical adsorption process. Here, we fabricate a non-oxidative graphene with mass production and synthesis magnetite/non-oxidative graphene (M-nOG) composites for arsenic removal. The M-nOG showed great capacity for adsorption of arsenic against its low material cost. We found that the arsenite was more influenced by surface complexation and the arsenate was favorable for intraparticle diffusion in the adsorption process using M-nOG. To confirm the feasibility of M-nOG as adsorbents for arsenic removal, the effect of various conditions such as pH, temperature, competing anions, and humic acid on the arsenic removal were evaluated. Moreover, the repetitive reuse and regeneration of M-nOG were performed. In conclusion, the M-nOG was cost-effective and feasible to use practically as adsorbents for arsenic removal.

Original language	English
Pages (from-to)	40-48
Number of pages	9
Journal	Separation and Purification Technology
Volume	178
DOIs	https://doi.org/10.1016/j.seppur.2017.01.025
Publication status	Published - 2017

Bibliographical note

Funding Information:
This work is supported by the National Research Foundation of South Korea (NRF) grant funded by the Korea Government (MSIP) (2016R1A2B4015598) and Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the South Korea Government Ministry of Knowledge Economy (20142010102690).

Publisher Copyright:
© 2017 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Filtration and Separation

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10.1016/j.seppur.2017.01.025

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title = "Synthesis of magnetite/non-oxidative graphene composites and their application for arsenic removal",

abstract = "Since graphene-based materials have been investigated to adsorb many kinds of contaminants such as heavy metals especially arsenic, the fabrication costs of them are critically important for their application to the practical adsorption process. Here, we fabricate a non-oxidative graphene with mass production and synthesis magnetite/non-oxidative graphene (M-nOG) composites for arsenic removal. The M-nOG showed great capacity for adsorption of arsenic against its low material cost. We found that the arsenite was more influenced by surface complexation and the arsenate was favorable for intraparticle diffusion in the adsorption process using M-nOG. To confirm the feasibility of M-nOG as adsorbents for arsenic removal, the effect of various conditions such as pH, temperature, competing anions, and humic acid on the arsenic removal were evaluated. Moreover, the repetitive reuse and regeneration of M-nOG were performed. In conclusion, the M-nOG was cost-effective and feasible to use practically as adsorbents for arsenic removal.",

author = "Yeojoon Yoon and Mengliang Zheng and Ahn, {Yong Tae} and Park, {Won Kyu} and Yang, {Woo Seok} and Kang, {Joon Wun}",

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AU - Yoon, Yeojoon

AU - Zheng, Mengliang

AU - Ahn, Yong Tae

AU - Park, Won Kyu

AU - Yang, Woo Seok

AU - Kang, Joon Wun

N1 - Funding Information: This work is supported by the National Research Foundation of South Korea (NRF) grant funded by the Korea Government (MSIP) (2016R1A2B4015598) and Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the South Korea Government Ministry of Knowledge Economy (20142010102690). Publisher Copyright: © 2017 Elsevier B.V.

PY - 2017

Y1 - 2017

N2 - Since graphene-based materials have been investigated to adsorb many kinds of contaminants such as heavy metals especially arsenic, the fabrication costs of them are critically important for their application to the practical adsorption process. Here, we fabricate a non-oxidative graphene with mass production and synthesis magnetite/non-oxidative graphene (M-nOG) composites for arsenic removal. The M-nOG showed great capacity for adsorption of arsenic against its low material cost. We found that the arsenite was more influenced by surface complexation and the arsenate was favorable for intraparticle diffusion in the adsorption process using M-nOG. To confirm the feasibility of M-nOG as adsorbents for arsenic removal, the effect of various conditions such as pH, temperature, competing anions, and humic acid on the arsenic removal were evaluated. Moreover, the repetitive reuse and regeneration of M-nOG were performed. In conclusion, the M-nOG was cost-effective and feasible to use practically as adsorbents for arsenic removal.

AB - Since graphene-based materials have been investigated to adsorb many kinds of contaminants such as heavy metals especially arsenic, the fabrication costs of them are critically important for their application to the practical adsorption process. Here, we fabricate a non-oxidative graphene with mass production and synthesis magnetite/non-oxidative graphene (M-nOG) composites for arsenic removal. The M-nOG showed great capacity for adsorption of arsenic against its low material cost. We found that the arsenite was more influenced by surface complexation and the arsenate was favorable for intraparticle diffusion in the adsorption process using M-nOG. To confirm the feasibility of M-nOG as adsorbents for arsenic removal, the effect of various conditions such as pH, temperature, competing anions, and humic acid on the arsenic removal were evaluated. Moreover, the repetitive reuse and regeneration of M-nOG were performed. In conclusion, the M-nOG was cost-effective and feasible to use practically as adsorbents for arsenic removal.

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Synthesis of magnetite/non-oxidative graphene composites and their application for arsenic removal

Abstract

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