Hawaii

Josiah Hunt, Landscape Ecology July, 2010


Biochar Trials

In 2009 Landscape Ecology was awarded a grant to produce biochar amended compost and observe plant growth responses.

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Josiah Hunt, July, 2010

Josiah has a background in Agroecology and Ecology, and he has been working both in landscaping, and in making Biochar. See his web site for more details http://www.landscapeecology-hawaii.com/

His work is also noted in the July-August 2010 Audubon Magazine Field Notes: Please Smoke

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Ben Discoe, July, 2010

I have now done tests with a pit, and contrasted with the retort.

For information on the retort see: http://terrapreta.bioenergylists.org/content/small-kilnretort-my-farm-ahualoa-hawaii and http://tech.groups.yahoo.com/group/biochar/message/11011

Since the retort had issues, i looked for a way to get larger capacity and fewer parts to wear out. The idea: a pit lined with concrete blocks, which can be covered with a piece of sheet metal and soil.

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Ben Discoe, April 2010, update August,2010

I built a small kiln/retort on my farm in Ahualoa, Hawaii. Description, photos and observations from my first trial run at on my blog here:
http://washedashore.com/eggsntea/2010/04/biochar1/

Summary: it's a hybrid of the two-barrel and twin-oaks approaches, aiming for higher volume than the two-barrel and lower cost/complexity than the twin-oaks. My approach needs tuning, but it seems promising.

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Sewage Sludge Charcoal
Michael Antal,University of Hawaii, April 2008
Sewage Sludge Charcoal
Sewage Sludge Charcoal

I am pleased and somewhat surprised to report that raw sewage sludge is a good feedstock for charcoal production. Details are available on the HNEI website below.

www.hnei.hawaii.edu
Flash Carbonization

Regards, Michael.

Michael J. Antal, Jr.
Coral Industries Distinguished Professor of Renewable Energy Resources
Hawaii Natural Energy Institute
POST 109, 1680 East-West Rd.
Honolulu, HI 96822

phone: 808/956-7267
fax: 808/956-2336
www.hnei.hawaii.edu

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Integrated Strategies for Statewide Food and Energy Crop Production
THE SENATE, S.B. NO. 890 TWENTY-FOURTH LEGISLATURE, 2007 S.D. 1 STATE OF HAWAII
Description:
Appropriates funds for the center for conservation research and training at UH to develop best practices consistent with comprehensive agricultural management strategies to facilitate sustainable production of crops through long-term enhancement of soil quality using ecologically responsible means. Implements a pilot project demonstrating integrated strategies to enhance soil fertility for the production of clean energy feedstocks (agricultural crops used as the raw materials for biofuels or biomass-to-electricity production) and food crops. Establishes mechanisms by which stakeholders can work collaboratively in the development of best practices and to educate the public about sustainable agriculture issues faced by the state. (SD1)

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Biocarbons (Charcoal)
Hawaii Natural Energy Institute, January 2007

Consider the following riddle:

I am renewable;
I am a chemical element;
as a fuel I am often less expensive ($/GJ) than natural gas;
my energy density (GJ/m3) can exceed that of ethanol or LPG;
and my combustion does not add to the CO2 in the atmosphere;
I am easily stored and safe to transport;
I clean the water you drink and the air you breathe;
Plants grow best in soils that are enriched with me;
I am a key ingredient in the production of semiconductors;
When eaten I settle an upset stomach and clean the intestines; and
No one is afraid of me!
What am I?

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The Art, Science, and Technology of Charcoal Production
Michael Jerry Antal, Jr., Morten Gronli, Ind. Eng. Chem. Res., 42 (8), 1619 -1640, 2003. 10.1021/ie0207919 S0888-5885(02)00791-1 Web Release Date: March 14, 2003

Abstract:

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