 |
| Titel |
Life cycle assessment of biochar application in Vietnam using two pyrolysis technologies |
| VerfasserIn |
Ali Mohammadi, Annette Cowie, Thi Lan Anh Mai, Ruy Anaya de la Rosa, Paul Kristiansen, Miguel Brandão, Stephen Joseph |
| Konferenz |
EGU General Assembly 2016
|
| Medientyp |
Artikel
|
| Sprache |
en
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250131338
|
| Publikation (Nr.) |
 EGU/EGU2016-11736.pdf |
|
|
|
|
|
| Zusammenfassung |
| This study presents a comparative analysis of the environmental impacts of biochar systems
in Vietnam using household scale and district scale pyrolysis technologies. At the household
scale, pyrolytic cook-stoves were assumed to be used by households to produce biochar. The
pyrolytic cook-stoves burn pyrolysis gases and use the heat for cooking. At the district scale,
the BIGchar 2200 unit, a continuous operation system, is utilised to convert rice husk to
biochar. This unit allows for easy capture of produced gases, which can be used to generate
energy products, adding value to biochar production and decreasing environmental costs
through the displacement of fossil fuels. The biochar produced from each system was
assumed to be applied to paddy rice fields. Results from Life Cycle Assessment showed that
biochar production at the both scales for application to the soil significantly improved
environmental performance of 1 Mg of rice husk relative to the reference scenario
(open burning of husk) across a range of impacts including climate change (CC),
particulate matter and non-renewable energy (NRE) use. Net carbon abatement of
biochar systems ranged from 355 to 427 kg CO2-eq Mg−1 of spring rice husk at the
household scale and district scale, respectively. The district scale offered greater
carbon abatement primarily due to the higher rate of LPG displaced by this unit. |
|
|
|
|
|
|