• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Copper loaded on activated carbon as an efficient adsorbent for removal of methylene blue
【24h】

Copper loaded on activated carbon as an efficient adsorbent for removal of methylene blue

机译：铜负载活性炭作为高效吸附剂，用于去除亚甲基蓝色

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Copper loaded activated carbon (Cu-AC) was prepared by impregnating it with cupric nitrate followed by microwave heating and then used for removing dyes in wastewater. The Cu-AC was thoroughly characterized by N-2 adsorption and desorption isotherms, SEM, EDS, XRD, XPS, FT-IR, and Raman. It was proven that cupric nitrate was successfully loaded onto activated carbon with the resulting formation of copper, copper oxide, and cuprous oxide. The Cu-AC was used to treat five kinds of dyes in wastewaters (Rhodamine B, MB, Amaranth, Congo red, and Eosin-Y). Comparing the adsorption capacity of these five dye wastewaters, it was proven that copper and copper oxides have photocatalytic degradation ability that can improve dye removal efficiency. Experimental adsorption data of MB were fit using several kinetic and isotherm models. Kinetic studies indicated that a pseudo-second order is the most suitable model for the adsorption process with a correlation coefficient of R-2 > 0.999. The equilibrium adsorption data of MB showed that it followed the Langmuir isotherm; the Langmuir maximum adsorption capacity was 373 mg g(-1). Compared with ordinary activated carbon, the maximum adsorption capacity of Cu-AC increased by 37.8%. Additionally, through thermodynamic calculations the negative value of Delta G and positive value of DH showed that the adsorption was a spontaneous and endothermic process. All the above results reveal that Cu-AC can be an effective absorbent for removing dyes from wastewater.
机译：通过用硝酸铜浸渍，然后进行微波加热来制备铜负载活性炭（Cu-AC），然后用于除去废水中的染料。 Cu-AC通过N-2吸附和解吸等温，SEM，EDS，XRD，XPS，FT-IR和拉曼进行了彻底的特征。据证明，硝酸铜成功地装载到活性炭上，得到铜，氧化铜和氧化铜的形成。 Cu-AC用于处理废水中的五种染料（Rhodamine B，MB，苋菜，刚果红色和eosin-Y）。比较这五种染料废水的吸附能力，证明铜和氧化铜具有光催化降解能力，可提高染料去除效率。使用几种动力学和等温机型，MB的实验吸附数据适合。动力学研究表明，伪二次阶是一种最合适的吸附过程模型，具有R-2> 0.999的相关系数。 MB的平衡吸附数据表明它跟随Langmuir等温线; Langmuir最大吸附容量为373mg g（-1）。与普通活性炭相比，Cu-AC的最大吸附能力增加了37.8％。另外，通过热力学计算DH的DELA G和正值的负值表明吸附是自发性和吸热过程。所有上述结果表明，Cu-AC可以是用于从废水中除去染料的有效吸收剂。

著录项

  • 来源
    《RSC Advances》 |2017年第24期|共11页
  • 作者

    Shu Jianhua; Cheng Song; Xia Hongying; Zhang Libo; Peng Jinhui; Li Chunyang; Zhang Shengzhou;

  • 作者单位

    Kunming Univ Sci &

    Technol State Key Lab Complex Nonferrous Met Resources Cl Kunming 650093 Yunnan Peoples R China;

    Kunming Univ Sci &

    Technol State Key Lab Complex Nonferrous Met Resources Cl Kunming 650093 Yunnan Peoples R China;

    Kunming Univ Sci &

    Technol State Key Lab Complex Nonferrous Met Resources Cl Kunming 650093 Yunnan Peoples R China;

    Kunming Univ Sci &

    Technol State Key Lab Complex Nonferrous Met Resources Cl Kunming 650093 Yunnan Peoples R China;

    Kunming Univ Sci &

    Technol State Key Lab Complex Nonferrous Met Resources Cl Kunming 650093 Yunnan Peoples R China;

    Kunming Univ Sci &

    Technol State Key Lab Complex Nonferrous Met Resources Cl Kunming 650093 Yunnan Peoples R China;

    Kunming Univ Sci &

    Technol State Key Lab Complex Nonferrous Met Resources Cl Kunming 650093 Yunnan Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号