Dissolved organic matter characterization of biochars produced from different feedstock materials

Anushka Upamali Rajapaksha, Yong Sik Ok, Ali El-Naggar, Hyojeon Kim, Fanhao Song, Seoktae Kang, Yiu Fai Tsang

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)


Fluorescence excitation-emission matrix (EEM) spectroscopy coupled with parallel factor analysis (PARAFAC) enables better understanding of the nature of dissolved organic matter (DOM). In the current study, we characterized 10 biochar samples produced from different feedstocks using EEM/PARAFAC analysis. The composition and distribution of DOM substances present in biochar varied significantly according to feedstock, activation, and pyrolysis temperature. The integration of proximate and ultimate analyses of the solid phase together with water extractable organic matter (WEOM) phase of biochar provided new insights into the characterization of biochars, including nature and functionality. Characterization of both WEOM and solid phases is recommended for biochar research before large-scale production for various environmental and industrial applications.

Original languageEnglish
Pages (from-to)393-399
Number of pages7
JournalJournal of Environmental Management
Publication statusPublished - 2019 Mar 1


  • Biochar
  • Dissolved organic matter
  • EEM spectra

ASJC Scopus subject areas

  • Environmental Engineering
  • Waste Management and Disposal
  • Management, Monitoring, Policy and Law


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