Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 178, Issue -, Pages 40-48Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2017.01.025
Keywords
Arsenic; Non-oxidative graphene; Magnetite; Adsorption; Regeneration
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Funding
- National Research Foundation of South Korea (NRF) grant - Korea Government (MSIP) [2016R1A2B4015598]
- Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant - South Korea Government Ministry of Knowledge Economy [20142010102690]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20142010102690] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [21A20130011104, 2016R1A2B4015598] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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. (C) 2017 Elsevier B.V. All rights reserved.
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