Articles
  • Mesoporous carbon synthesized from sewage sludge and its electrochemical properties

  • Jonggil Kwon, Kue-Ho Kim, Hyo-Jin Ahn and Yeon Hwang*

  • Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, South Korea

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Activated carbon having high specific surface area was synthesized from sewage sludge by acid treatment and KOH activation process, and its electrochemical properties were measured to research the potential use as electrode material. All activated sludge samples were synthesized as graphitic-like phase. The optimum activation condition, where the specific surface area, cyclic voltametry (CV) characteristics and capacitance showed the best values, was at the weight ratio of WKOH/Wsludge = 3.5/1. Mesoporous carbon synthesized at this condition showed 1,617 m2g-1 of specific surface area and 134.6 Fg-1 of specific capacitance at the current density of 0.2 Ag-1. High specific surface area resulted in the high specific capacitance


Keywords: Sewage sludge, Mesoporous, KOH activation, Activated carbon

This Article

  • 2021; 22(2): 186-191

    Published on Apr 30, 2021

  • 10.36410/jcpr.2021.22.2.186
  • Received on Aug 27, 2020
  • Revised on Nov 1, 2020
  • Accepted on Nov 11, 2020

Correspondence to

  • Yeon Hwang

  • Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, South Korea
    Tel : +82-2-970-6517 Fax: +82-2-973-6657

  • E-mail: yhwang@seoultech.ac.kr