화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.89, 222-232, September, 2020
DOI10.1016/j.jiec.2020.05.017  Export Citation
Assessing the effect of surface hydrophobicity/hydrophilicity on pollutant leaching potential of biochar in water treatment
Nian Hong1, Qin Cheng1, Ashantha Goonetilleke2, Erick R. Bandala3, and An Liu1, 2, †
  • 1College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
  • 2School of Civil and Environmental Engineering, Queensland University of Technology (QUT), GPO Box 2434, Brisbane, Qld 4001, Australia
  • 3Division of Hydrologic Sciences, Desert Research Institute, 755 E Flamingo Rd., Las Vegas, NV 89119, USA
E-mail:
This study investigated the role of surface hydrophobicity/hydrophilicity of biochar on its pollutant leaching potential (pollutants originally in biomass feedstock), including nutrients, organic matter and metals, in water treatment applications. The study outcomes confirmed that biochar with greater hydrophilic surface leached comparatively higher loads of nutrients and organic matter compared to biochar with mostly hydrophobic surface, while biochar with greater hydrophilic surface leached lower metal loads. This trend is attributed to the changes to the physical and chemical properties of biochar including specific surface area and surface functional groups, as well as being related to the binding forces between the biochar surface and the different compounds. Further, the study results substantiated the significant influence of surface characteristics of biochar, and its preparation process on pollutant leaching potential. The study outcomes provide essential guidance on the appropriate use of biochar as an adsorbent in water treatment, including raw biomass selection and the production processes to be adopted.
Keywords:Biochar;Water treatment;Preparation processes;Surface characteristics;Pollutant leaching
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