Gasification biochar as a valuable by-product for carbon sequestration and soil amendment

Veronika Hansen, Dorette Müller-Stöver, Jesper Ahrenfeldt, Jens Kai Holm, Ulrik Birk Henriksen, Henrik Hauggaard-Nielsen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Thermal gasification of various biomass residues is a promising technology for combining bioenergy production with soil fertility management through the application of the resulting biochar as soil amendment. In this study, we investigated gasification biochar (GB) materials originating from two major global biomass fuels: straw gasification biochar (SGB) and wood gasification biochar (WGB), produced by a Low Temperature Circulating Fluidized Bed gasifier (LT-CFB) and a TwoStage gasifier, respectively, optimized for energy
conversion. Stability of carbon in GB against microbial degradation was assessed in a shortterm soil incubation study and compared to the traditional practice of direct incorporation of cereal straw. The GBs were chemically and physically characterized to evaluate their potential to improve soil quality parameters. After 110 days of incubation, about 3% of the added GB carbon was respired as CO2, compared to 80% of the straw carbon added. The stability of GB was also confirmed by low H/C and O/C atomic ratios with lowest values for
WGB (H/C 0.12 and O/C 0.10). The soil application of GBs exhibited a liming effect increasing the soil pH from ca 8 to 9. Results from scanning electron microscopy and BET analyses showed high porosity and specific surface area of both GBs, indicating a high potential to increase important soil quality parameters such as soil structure, nutrient and water retention, especially for WGB. These results seem promising regarding the possibility to combine an efficient bioenergy production with various soil aspects such as carbon
sequestration and soil quality improvements.
OriginalsprogEngelsk
TidsskriftBiomass & Bioenergy
Vol/bind72
Sider (fra-til)300-308
Antal sider8
ISSN0961-9534
DOI
StatusUdgivet - 2015

Citer dette

Hansen, Veronika ; Müller-Stöver, Dorette ; Ahrenfeldt, Jesper ; Holm, Jens Kai ; Henriksen, Ulrik Birk ; Hauggaard-Nielsen, Henrik. / Gasification biochar as a valuable by-product for carbon sequestration and soil amendment. I: Biomass & Bioenergy. 2015 ; Bind 72. s. 300-308.
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abstract = "Thermal gasification of various biomass residues is a promising technology for combining bioenergy production with soil fertility management through the application of the resulting biochar as soil amendment. In this study, we investigated gasification biochar (GB) materials originating from two major global biomass fuels: straw gasification biochar (SGB) and wood gasification biochar (WGB), produced by a Low Temperature Circulating Fluidized Bed gasifier (LT-CFB) and a TwoStage gasifier, respectively, optimized for energyconversion. Stability of carbon in GB against microbial degradation was assessed in a shortterm soil incubation study and compared to the traditional practice of direct incorporation of cereal straw. The GBs were chemically and physically characterized to evaluate their potential to improve soil quality parameters. After 110 days of incubation, about 3{\%} of the added GB carbon was respired as CO2, compared to 80{\%} of the straw carbon added. The stability of GB was also confirmed by low H/C and O/C atomic ratios with lowest values forWGB (H/C 0.12 and O/C 0.10). The soil application of GBs exhibited a liming effect increasing the soil pH from ca 8 to 9. Results from scanning electron microscopy and BET analyses showed high porosity and specific surface area of both GBs, indicating a high potential to increase important soil quality parameters such as soil structure, nutrient and water retention, especially for WGB. These results seem promising regarding the possibility to combine an efficient bioenergy production with various soil aspects such as carbonsequestration and soil quality improvements.",
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Gasification biochar as a valuable by-product for carbon sequestration and soil amendment. / Hansen, Veronika; Müller-Stöver, Dorette; Ahrenfeldt, Jesper; Holm, Jens Kai; Henriksen, Ulrik Birk; Hauggaard-Nielsen, Henrik.

I: Biomass & Bioenergy, Bind 72, 2015, s. 300-308.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Gasification biochar as a valuable by-product for carbon sequestration and soil amendment

AU - Hansen, Veronika

AU - Müller-Stöver, Dorette

AU - Ahrenfeldt, Jesper

AU - Holm, Jens Kai

AU - Henriksen, Ulrik Birk

AU - Hauggaard-Nielsen, Henrik

PY - 2015

Y1 - 2015

N2 - Thermal gasification of various biomass residues is a promising technology for combining bioenergy production with soil fertility management through the application of the resulting biochar as soil amendment. In this study, we investigated gasification biochar (GB) materials originating from two major global biomass fuels: straw gasification biochar (SGB) and wood gasification biochar (WGB), produced by a Low Temperature Circulating Fluidized Bed gasifier (LT-CFB) and a TwoStage gasifier, respectively, optimized for energyconversion. Stability of carbon in GB against microbial degradation was assessed in a shortterm soil incubation study and compared to the traditional practice of direct incorporation of cereal straw. The GBs were chemically and physically characterized to evaluate their potential to improve soil quality parameters. After 110 days of incubation, about 3% of the added GB carbon was respired as CO2, compared to 80% of the straw carbon added. The stability of GB was also confirmed by low H/C and O/C atomic ratios with lowest values forWGB (H/C 0.12 and O/C 0.10). The soil application of GBs exhibited a liming effect increasing the soil pH from ca 8 to 9. Results from scanning electron microscopy and BET analyses showed high porosity and specific surface area of both GBs, indicating a high potential to increase important soil quality parameters such as soil structure, nutrient and water retention, especially for WGB. These results seem promising regarding the possibility to combine an efficient bioenergy production with various soil aspects such as carbonsequestration and soil quality improvements.

AB - Thermal gasification of various biomass residues is a promising technology for combining bioenergy production with soil fertility management through the application of the resulting biochar as soil amendment. In this study, we investigated gasification biochar (GB) materials originating from two major global biomass fuels: straw gasification biochar (SGB) and wood gasification biochar (WGB), produced by a Low Temperature Circulating Fluidized Bed gasifier (LT-CFB) and a TwoStage gasifier, respectively, optimized for energyconversion. Stability of carbon in GB against microbial degradation was assessed in a shortterm soil incubation study and compared to the traditional practice of direct incorporation of cereal straw. The GBs were chemically and physically characterized to evaluate their potential to improve soil quality parameters. After 110 days of incubation, about 3% of the added GB carbon was respired as CO2, compared to 80% of the straw carbon added. The stability of GB was also confirmed by low H/C and O/C atomic ratios with lowest values forWGB (H/C 0.12 and O/C 0.10). The soil application of GBs exhibited a liming effect increasing the soil pH from ca 8 to 9. Results from scanning electron microscopy and BET analyses showed high porosity and specific surface area of both GBs, indicating a high potential to increase important soil quality parameters such as soil structure, nutrient and water retention, especially for WGB. These results seem promising regarding the possibility to combine an efficient bioenergy production with various soil aspects such as carbonsequestration and soil quality improvements.

U2 - 10.1016/j.biombioe.2014.10.013

DO - 10.1016/j.biombioe.2014.10.013

M3 - Journal article

VL - 72

SP - 300

EP - 308

JO - Biomass & Bioenergy

JF - Biomass & Bioenergy

SN - 0961-9534

ER -