Effects of slow and fast pyrolysis biochar on soil C and N turnover dynamics

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Effects of slow and fast pyrolysis biochar on soil C and N turnover dynamics

Authors
Publisher
Pergamon
Keywords
  • 2
  • Respectively
  • 8)
  • 6 And 1
  • This Study Compared The Effect Of Two Principal Pyrolysis Methods On The Chemical Characteristics Of
  • Biochar Was Produced From Wheat Straw That Was Thermally Decomposed At 525 °C By Slow Pyrolysis (Sp)
  • After 65 Days Of Soil Incubation
  • 9% And 5
  • 5% Of The Sp- And Fp-Biochar C
  • Was Lost As Co2
  • Significantly Less Than The 53% C-Loss Observed When Un-Pyrolyzed Feedstock Straw Was Incubated
  • Whereas The Sp-Biochar Appeared Completely Pyrolyzed
  • An Un-Pyrolyzed Carbohydrate Fraction (8
  • 8% As Determined By Acid Released C6 And C5 Sugars) Remained In The Fp-Biochar
  • This Labile Fraction Possibly Supported The Higher Co2 Emission And Larger Microbial Biomass (Smb-C)
  • Application Of Fresh Fp-Biochar To Soil Immobilized Mineral N (43%) During The 65 Days Of Incubation
  • While Application Of Sp-Biochar Led To Net N Mineralization (7%)
  • In Addition To The Carbohydrate Contents
  • The Two Pyrolysis Methods Resulted In Different Ph (10
  • 1 And 6
  • Particle Sizes (113 And 23 μM)
  • And Bet Surface Areas (0
  • 6 M2 G−1) Of The Sp- And Fp-Biochars
  • The Study Showed That Independently Of Pyrolysis Method
  • Soil Application Of The Biochar Materials Had The Potential To Sequester C
  • While The Pyrolysis Method Did Have A Large Influence On The Mineralization-Immobilization Of Soil N

Abstract

Effects of slow and fast pyrolysis biochar on soil C and N turnover dynamics - DTU Orbit (18/04/14) Effects of slow and fast pyrolysis biochar on soil C and N turnover dynamics - DTU Orbit (18/04/14) Effects of slow and fast pyrolysis biochar on soil C and N turnover dynamics Bruun, E., Ambus, P., Egsgaard, H. & Hauggaard-Nielsen, H. 2012 In : Soil Biology & Biochemistry. 46, 4, p. 73-79 Publication: Research - peer-review › Journal article – Annual report year: 2011

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