• 文献标题:   Synthesis of magnetite/non-oxidative graphene composites and their application for arsenic removal
  • 文献类型:   Article
  • 作  者:   YOON YJ, ZHENG ML, AHN YT, PARK WK, YANG WS, KANG JW
  • 作者关键词:   arsenic, nonoxidative graphene, magnetite, adsorption, regeneration
  • 出版物名称:   SEPARATION PURIFICATION TECHNOLOGY
  • ISSN:   1383-5866 EI 1873-3794
  • 通讯作者地址:   Yonsei Univ
  • 被引频次:   34
  • DOI:   10.1016/j.seppur.2017.01.025
  • 出版年:   2017

▎ 摘  要

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.