• Surface Characteristics of Cattle Manure-derived Biochar: Effects of Manure Aging and Nitrogen/Phosphorus Leaching
  • Kim Naeun1·Lee Heuiyun2·Kwon Gihoon1·Song Hocheol1*

  • 1Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
    2Department of Environment and energy, Sejong University, Seoul 05006, Republic of Korea

  • 부숙도에 따른 우분유래 바이오차의 표면특성과 질소 및 인의 침출 거동 연구
  • 김나은1·이희연2·권기훈1·송호철1*

  • 1한양대학교 자원환경공학과
    2세종대학교 환경에너지융합학과

  • 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.


Continuous increase of domestic meat consumption has inevitably increased generation of livestock manure and caused severe environmental impacts on ecosystem and human beings. This work produced biochar from cattle manure samples with different composting aging stages and investigated the properties of the produced biochar. The result of thermogravimetric analysis showed that thermal decomposition of the manure initiated at <600oC. The biochar yield was higher for the manure with a longer pre-composting period due to the elimination of microbially metabolized carbons during composting process. The result of FT-IR analysis showed that the number of surface functional groups were reduced during pyrolysis while enhancing the graphitic structures of the carbon framework. Manure samples tended to leach out N and P in leaching tests, with its amount higher for aged one than fresh one. However, their leaching was substantially suppressed when the manure was produced into biochar. In XPS spectra, it was found that N and P in the manure incorporated into biochar surface to form N-doped graphitic carbon and P-N-moieties, respectively. The findings of this work suggest that the thermochemical process can be of a viable option to valorize into biochar for potential environmental applications as well as to alleviate undesired nutrients loading to the environment.

Keywords: 가축분뇨, 바이오차, 부영양화, 열분해, N-doped graphitic carbon

This Article

  • 2023; 28(6): 24-32

    Published on Dec 31, 2023

  • 10.7857/JSGE.2023.28.6.024
  • Received on Oct 17, 2023
  • Revised on Nov 8, 2023
  • Accepted on Nov 21, 2023

Correspondence to

  • Song Hocheol
  • Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea

  • E-mail: hcsong@hanyang.ac.kr