The love-hate relationship of pyrolysis biochar and water: A perspective

被引:131
作者
Das, Oisik [1 ]
Sarmah, Ajit K. [1 ]
机构
[1] Univ Auckland, Dept Civil & Environm Engn, Auckland 1142, New Zealand
关键词
Biochar; Hydrophobicity; Water; Aliphatic groups; Pores; Surface area; TEMPERATURE; CAPACITY; SOIL;
D O I
10.1016/j.scitotenv.2015.01.061
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Biochar is being considered for environmental sustainability by the scientific community and as a result is extensively investigated for various applications in agriculture, remediation and construction. Hence, a sound knowledge of biochar's physical and chemical properties is critical. However, the dynamics of biochar-water interaction remain ambiguous. We hypothesize that the hydrophobicity of a biochar made at low pyrolysis temperature is not permanent under water-rich conditions. Our results suggest that the aliphatic functional groups responsible for biochar's hydrophobicity are displaced when subjected to water which eventually increases the affinity of the biochar towards water. We envisage that commentary would stimulate researchers to investigate the biochar-water interaction in a new light and eventually help design a biochar which would be apt for their intended end use. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:682 / 685
页数:4
相关论文
共 20 条
  • [1] [Anonymous], CURR TRENDS BIOTECHN
  • [2] [Anonymous], CARBON SCI
  • [3] Batchelor GK, 1967, An introduction to fluid dynamics
  • [4] Downie A., 2009, BIOCHAR ENV MANAGEME, P13, DOI [10.4324/9780203762264, DOI 10.4324/9780203762264]
  • [5] Gaskin JW, 2008, T ASABE, V51, P2061, DOI 10.13031/2013.25409
  • [6] Water uptake in biochars: The roles of porosity and hydrophobicity
    Gray, Myles
    Johnson, Mark G.
    Dragila, Maria I.
    Kleber, Markus
    [J]. BIOMASS & BIOENERGY, 2014, 61 : 196 - 205
  • [7] Hydrologic properties of biochars produced at different temperatures
    Kinney, T. J.
    Masiello, C. A.
    Dugan, B.
    Hockaday, W. C.
    Dean, M. R.
    Zygourakis, K.
    Barnes, R. T.
    [J]. BIOMASS & BIOENERGY, 2012, 41 : 34 - 43
  • [8] Characterization of Slow Pyrolysis Biochars: Effects of Feedstocks and Pyrolysis Temperature on Biochar Properties
    Kloss, Stefanie
    Zehetner, Franz
    Dellantonio, Alex
    Hamid, Raad
    Ottner, Franz
    Liedtke, Volker
    Schwanninger, Manfred
    Gerzabek, Martin H.
    Soja, Gerhard
    [J]. JOURNAL OF ENVIRONMENTAL QUALITY, 2012, 41 (04) : 990 - 1000
  • [9] BIOCHAR APPLICATION TO SOIL: AGRONOMIC AND ENVIRONMENTAL BENEFITS AND UNINTENDED CONSEQUENCES
    Kookana, R. S.
    Sarmah, A. K.
    Van Zwieten, L.
    Krull, E.
    Singh, B.
    [J]. ADVANCES IN AGRONOMY, VOL 112, 2011, 112 : 103 - 143
  • [10] Black Carbon increases cation exchange capacity in soils
    Liang, B.
    Lehmann, J.
    Solomon, D.
    Kinyangi, J.
    Grossman, J.
    O'Neill, B.
    Skjemstad, J. O.
    Thies, J.
    Luizao, F. J.
    Petersen, J.
    Neves, E. G.
    [J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2006, 70 (05) : 1719 - 1730