Cited by 67Soil Carbon and Nitrogen DynamicsThermochemical Biomass Conversion ProcessesAgricultural Science and Fertilization

Biochar from “Kon Tiki” flame curtain and other kilns: effects of nutrient enrichment and kiln type on crop yield and soil chemistry

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Pandit, Naba Raj, Mulder, Jan, Hale, Sarah Elisabeth, Schmidt, Hans Peter, Cornelissen, Gerard·2017·PLoS ONE

Abstract

Biochar application to soils has been investigated as a means of improving soil fertility and mitigating climate change through soil carbon sequestration. In the present work, the invasive shrub "Eupatorium adenophorum" was utilized as a sustainable feedstock for making biochar under different pyrolysis conditions in Nepal. Biochar was produced using several different types of kilns; four sub types of flame curtain kilns (deep-cone metal kiln, steel shielded soil pit, conical soil pit and steel small cone), brick-made traditional kiln, traditional earth-mound kiln and top lift up draft (TLUD). The resultant biochars showed consistent pH (9.1 ± 0.3), cation exchange capacities (133 ± 37 cmolc kg-1), organic carbon contents (73.9 ± 6.4%) and surface areas (35 to 215 m2/g) for all kiln types. A pot trial with maize was carried out to investigate the effect on maize biomass production of the biochars made with various kilns, applied at 1% and 4% dosages. Biochars were either pretreated with hot or cold mineral nutrient enrichment (mixing with a nutrient solution before or after cooling down, respectively), or added separately from the same nutrient dosages to the soil. Significantly higher CEC (P< 0.05), lower Al/Ca ratios (P< 0.05), and high OC% (P<0.001) were observed for both dosages of biochar as compared to non-amended control soils. Importantly, the study showed that biochar made by flame curtain kilns resulted in the same agronomic effect as biochar made by the other kilns (P > 0.05). At a dosage of 1% biochar, the hot nutrient-enriched biochar led to significant increases of 153% in above ground biomass production compared to cold nutrient-enriched biochar and 209% compared to biochar added separately from the nutrients. Liquid nutrient enhancement of biochar thus improved fertilizer effectiveness compared to separate application of biochar and fertilizer.

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Research works printed but not linked: 2

  1. [23]Schmidt HP, Taylor P. Kon-Tiki flame curtain pyrolysis for the democratization of biochar production. Biochar J. 2014; 1: 14– 24.
  2. [26]Cornelissen G, Martinsen V, Shitumbanuma V, Alling V, Breedveld GD, Rutherford DW, et al Biochar effect on maize yield and soil characteristics in five conservation farming sites in Zambia. Agronomy. 2013; 3(2): 256– 74.

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Authors
Pandit, N. R., Mulder, J., Hale, S. E., Schmidt, H. P., & Cornelissen, G.
Affiliations
  • Norwegian University of Life Sciences (NO)
  • Ithaka Institute for Carbon Strategies (CH)
  • Norwegian Geotechnical Institute (NO)
Corresponding author
Cornelissen, Gerard
Venue
PLoS ONE
Published
2017-04-27
Volume
12
Issue
4
Pages
e0176378
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2608994744
Cited by
67
References
63
Citations by year
2026: 7 · 2025: 7 · 2024: 6 · 2023: 8 · 2022: 6 · 2021: 12 · 2020: 7 · 2019: 9 · 2018: 3 · 2017: 2
FWCI
6.27
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • BIBSYS Brage (BIBSYS (Norway)) (acceptedVersion, cc-by)
  • BIBSYS Brage (BIBSYS (Norway)) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • NORA - Norwegian Open Research Archives (submittedVersion, other-oa)
  • NORA - Norwegian Open Research Archives (submittedVersion, cc-by)
Funders
Norges Forskningsråd (217918)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Agricultural Science and Fertilization
Keywords
biochar, Ageratina adenophora, nutrient enrichment, maize biomass, soil cation exchange capacity, soil organic carbon, soil amendment, soil fertility
MeSH terms
Charcoal, Zea mays, Fertilizers, Soil, Crops, Agricultural

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