RE: [geo]_Is_biochar_or_straw-bale_construction_a_better _carbon_storage_from_a_life_cycle_perspective?_Tuomas_Mattil a,_,_Juha_Grönroos,_Jachym_Judl,_Marja-Riitta_Korhonen

[markcapron]

Andrew,

 

Good catch.  Biochar-Straw is one of several interesting articles in the PSEP Special Issue - Negative Emission Technology. 

 

The most impactful article's lead author is Dr. Antoine N’Yeurt of the University of the South Pacific, Fiji.  “Negative carbon via Ocean Afforestation” and the supplementary data are available at www.sciencedirect.com/science/article/pii/S0957582012001206.

Other articles appearing in the "Negative Emissions Technology" issue include:

A comparative global assessment of potential negative emissions technologies
November 2012
Duncan McLaren

Ocean fertilization for geoengineering: A review of effectiveness, environmental impacts and emerging governance
November 2012
Phillip Williamson | Douglas W.R. Wallace | Cliff S. Law | Philip W. Boyd | Yves Collos | Peter Croot | Ken Denman | Ulf Riebesell | Shigenobu Takeda | Chris Vivian

Is biochar or straw-bale construction a better carbon storage from a life cycle perspective?
November 2012
Tuomas Mattila | Juha Grönroos | Jachym Judl | Marja-Riitta Korhonen

High-level techno-economic assessment of negative emissions technologies
November 2012
Niall McGlashan | Nilay Shah | Ben Caldecott | Mark Workman

Can boreal afforestation help offset incompressible GHG emissions from Canadian industries?
November 2012
J.-F. Boucher | P. Tremblay | S. Gaboury | C. Villeneuve

Special issue – Negative Emissions Technology
November 2012
Tim Kruger | Richard Darton  (Note: This is a one-page introduction, not the entire special issue.)

Mark E. Capron, PE
Oxnard, California
www.PODenergy.org

 

 

-------- Original Message --------
Subject: [geo]_Is_biochar_or_straw-bale_construction_a_better
_carbon_storage_from_a_life_cycle_perspective?_Tuomas_Mattil
a,_,_Juha_Grönroos,_Jachym_Judl,_Marja-Riitta_Korhonen
From: Andrew Lockley <andrew.lock...@gmail.com>
Date: Fri, January 04, 2013 2:43 am
To: geoengineering <geoengineering@googlegroups.com>

http://www.sciencedirect.com/science/article/pii/S0957582012001188

Is biochar or straw-bale construction a better carbon storage from a
life cycle perspective?
Tuomas Mattila, , Juha Grönroos, Jachym Judl, Marja-Riitta Korhonen
Finnish Environment Institute SYKE, Mechelininkatu 34a, 00251 Helsinki, Finland
http://dx.doi.org/10.1016/j.psep.2012.10.006, How to Cite or Link Using DOI


Abstract
Biochar has been presented as a key technology for avoiding dangerous
climate change. Pyrolysis converts part of the biomass feedstock into
a gaseous fraction, which can be used for energy production. The
remaining fraction is char, which is highly stable and resistant to
biodegradation. When char is added to soil it increases carbon
storage, reduces emissions and improves soil quality. Agricultural
residues such as straw, stover and hulls are seen as the most
accessible raw material. These residues could also be used as
insulation in passive energy housing. Straw bale construction is a
relatively simple technology, which has been applied for decades. It
can store the carbon of the straw material into walls structures and
in the process provides energy efficient housing. The climate benefits
from improved energy efficiency depend on local conditions and energy
production forms. In this study life cycle assessment was used to
compare the climate impacts of biochar production and straw bale
construction. On a life cycle perspective, straw bale construction
results in higher net carbon storage than biochar production (3.3 t
CO2eq vs. 0.9 t CO2eq/t of straw). However the result was found to be
highly dependent on the assumptions on the overall energy efficiency
of the replaced building stock.

Keywords
Carbon storage; Straw; Pyrolysis; Natural building; Life cycle assessment

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