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<p>Due to their availability, low-cost production, tunable porosity, large specific surface area, and reasonable conductivity, activated carbon (AC) powder derived from biomass has gained the attention of many researchers. Biomass, particularly invasive species like Mesquite trees (<i>Prosopis juliflora</i>) transformed to activated carbon, has many beneficial impacts on the environment and human society. In this paper, AC powder was prepared from the Mesquite tree, followed by sodium hydroxide activation at 800 °C. The fabricated AC achieved a surface area of approximately 640 m<sup>2</sup>/g. The prepared AC was further oxidized to produce oxidized activated carbon (OAC) and doped with urea to synthesize UAC. Different types of ACs were prepared as electrodes for applications using capacitive deionization (CDI). Pure AC exhibited the best performance over OAC and UAC in the CDI process. The electrowetting phenomenon was also studied on pure AC electrode surface. Furthermore, AC was mixed with synthesized graphene oxide (GO), reduced graphene oxide (RGO), and multi-walled carbon nanotubes (MWCNT) and used as electrodes in the CDI system. Amongst, AC-MWCNT electrodes exhibited the highest CDI performance with different concentrations of NaCl solution (100, 250, and 500 ppm). AC-MWCNT electrode performance was further evaluated using actual groundwater from the Al-Suwaiq region, Oman, in the CDI process. AC derived from the Mesquite tree has a double benefit for the environment and society.</p>

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Mesoporous conductive activated carbon derived from Mesquite tree for capacitive deionization

  • 期刊论文

  • 发表日期：

    2025年2月10日

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  • Shuhd Mohammed Al-Hamadani,
  • Htet Htet Kyaw,
  • Myo Tay Zar Myint,
  • Mohammed Al-Abri,
  • El-Said I. El-Shafey

摘要

Due to their availability, low-cost production, tunable porosity, large specific surface area, and reasonable conductivity, activated carbon (AC) powder derived from biomass has gained the attention of many researchers. Biomass, particularly invasive species like Mesquite trees (Prosopis juliflora) transformed to activated carbon, has many beneficial impacts on the environment and human society. In this paper, AC powder was prepared from the Mesquite tree, followed by sodium hydroxide activation at 800 °C. The fabricated AC achieved a surface area of approximately 640 m2/g. The prepared AC was further oxidized to produce oxidized activated carbon (OAC) and doped with urea to synthesize UAC. Different types of ACs were prepared as electrodes for applications using capacitive deionization (CDI). Pure AC exhibited the best performance over OAC and UAC in the CDI process. The electrowetting phenomenon was also studied on pure AC electrode surface. Furthermore, AC was mixed with synthesized graphene oxide (GO), reduced graphene oxide (RGO), and multi-walled carbon nanotubes (MWCNT) and used as electrodes in the CDI system. Amongst, AC-MWCNT electrodes exhibited the highest CDI performance with different concentrations of NaCl solution (100, 250, and 500 ppm). AC-MWCNT electrode performance was further evaluated using actual groundwater from the Al-Suwaiq region, Oman, in the CDI process. AC derived from the Mesquite tree has a double benefit for the environment and society.