BioEnergy Lists: Biochar Mailing Lists

The Soils Lab at UC Davis has put together an Online Biochar Database
http://biochar.ucdavis.edu/

he UCD Biochar Database has been established to present an online resource of biochar physical and chemical characterization data. The database exists only as resource, with the specific objectives to:

Kelpie Wilson has been playing with the Japanese Cone Kiln for Biochar see the latest on her site: http://www.greenyourhead.com/

She's finding that the Cone Kiln is easier to use than the alternatives and it produces more char too.

in her words:

I love my Japanese Cone Kiln. ... It is basically just a cone-shaped fire ring - a truncated cone. All you do is start a small fire in the bottom, and once that is all burned to glowing coals, you add small stick wood or branches on in layers. Each time the wood gets black and starts to ash, you add another layer. The layers underneath continue to cook out tar and gas, but they don't burn because air is excluded. When the cone is full you quench it with water. If you like, you can throw a grill on it and cook your dinner before you put it out.

I revisited an earlier secondary air concept that used 3 triangular ports at 120 degrees around the fuel can. Importantly, the the third side of the triangle was bent down into the fuel can to create a vane to increase turbulence.

What I did today was to add three deflectors above the secondary airports/vanes. The deflectors were positioned midway between the ports and just below the top of the fuel can. Thus when the draft can was added, there was effectively no secondary air gap at all.

While this is only one run to see if the would work, the results were very good. Lots of turbulence. Some good flame noise. At the 15 minute mark I put on a 19 oz can of very cold tap water to boil. It boiled in 15 minutes. After about 30 minutes over the flames and in the flue, there was only a small amount of soot on the "pot". The pot bottom was NOT black. Ambient air temp was about 45f. Little to no wind.

A few pictures:

The Re:Char team did a nice job synthesizing the results of the second test year on their plots in Bungoma County, Western Kenya.
http://www.re-char.com/2013/01/24/the-longterm-impact-of-biochar-in-soil...

All test plots are managed by local Kenyan farmers according to local customs and all plots have similar light and rainfall. The study is not scientific or peer reviewed, but it's a good on the ground demonstration of actual farming techniques practiced in that area of Kenya, and can be considered a practical model of biochar inputs.

In this part of Kenya, some farmers use chemical fertilizer, which helps the crops grow, but not as much as manure. However, the cows in this part of the world tend to be open grazed, and it's difficult and time consuming to clean up the manure.

Please do read the full report, these are highlights:

Kardinia College Trail
A comprehensive small-scale trial was implemented at Kardinia International College to investigate if biochar soil amendments have an effect on the aboveground biomass and growth response of a selection of native species indigenous to the Geelong region.

Rainfall was almost non-existent and average summer temperatures were the warmest on record from establishment (spring 2012) until autumn 2013. Addition of biochar appears to have had a positive effect on the growth response (canopy and height measurements) of Yellow Gum in this scenario. Data for Drooping Sheoak and Blackwood are encouraging with respect to seedling height, but not for canopy diameter to date (this will be monitored over time).

James Cook University in Australia are working on a research project where biochar is specifically mixed in at an early stage of the composting project, COMBI-mix, to determine the impact on carbon sequestration and model the impacts on the agricultural impacts.

direct link:
https://plone.jcu.edu.au/researchatjcu/research/tess/Projects/australia/...

TESS project leader: Michael Bird

Hope Mine was one of the first, and certainly the largest, whole-mine reclamation project using biochar. Hope Mine was formerly a silver mine and it's situated close to Aspen, Colorado.

The USFS took charge of it in 2003, and the grey rock taillings had no vegetation and posed a potential threat to Castle Creek, Aspen's water supply. With this project, there was no evidence of heavy metals leeching, but the the bare rock didn't support vegitation, and could potentially pose a threat to the aquifer.

the results are quoted:

The project proved to be incredibly successful. xx test plots were created to study different levels of biochar,compost, and mycorrhizal fungi mix. The preliminary year-one results showed:

http://www.lrrd.org/public-lrrd/proofs/lrrd2411/leng24199.htm

In their study in Honduras, the authors carefully mixed rice hull char (made in a TLUD stove) with cassava chips and foliage and fed that to cattle, while doing a careful control, and measuring the health of the cattle as well as their methane emissions. The results are encouraging.

Twelve local “Yellow” cattle with initial live weight ranging from 80 to 100 kg were assigned in a completely randomized block design to a 2*2 factorial arrangement of four treatments with three replications. The factors were: biochar at 0.6% of diet DM or none; and potassium nitrate at 6% of diet DM or urea at 1.83% of diet DM. The basal diet was cassava root chips fed ad libitum and fresh cassava foliage at 1% of LW (DM basis). Sodium sulphate and sodium chloride were added to the diet at the rate of 0.4% and 0.5% in the DM. The trial lasted 98 days following a 21 day adaptation to the diets.

Vuthisa Technologies in South Africa have been working on improving the Portable Metal Kiln Charcoal Making Method and using a retort design to reduce emissions and improve efficiency making charcoal.

They have a great description with lots of detail on their web site: http://vuthisa.com/biochar/
as well as a Google Group:
https://groups.google.com/forum/?hl=en-GB&fromgroups#!forum/portable-kiln

In short the system is composted of an outer drum, often fabricated of sheet steel enclosing an inner set of 30 gallon drums.

Antioch University's Seattle campus is hosting two more weekend workshops in making Biochar:

• November 17 and 18, 2012
• April 27 and 28, 2013

In the last workshop in August, AUS students and alumni made 6 biochar stoves out of 55 gallon drums.

They used himalayan blackberry and reed canary grass as feedstocks and made some biochar that they use dot amend the soil around several of the cherry trees on the farm. This would be a fun workshop to learn about making and using biochar.

For more information visit the Antioch University web site:
http://www.antiochseattle.edu/2012/09/workshops-make-biochar-as-part-of-...
Buy Kicks | 『アディダス』に分類された記事一覧

Greetings from Costa Rica,

We are now selling a 55-gallon drum J-RO style TLUD to farmers down here in the Talamanca, the 1st wave are now 4 months old and still holding up. Our price is $100 USD. (w/o transportation) Although the one picture( attached) shows us processing hay on a farm near Seattle, most of what farmers are charring in our area of C.R. is pruned branches from the cacao fincas. Our Estufa Finca stoves and our drums are really designed to accommodate irregular woody waste, bamboo, coconut shells and husks, etc... This is all natural draft. Our run temp. in both devices average between 650-800c. Run time with tightly loaded woody waste is approx. 2.5-3 hours.
We will soon be installing a prototype TLUD heat exchanger. It will supply the hot water for a hydronic cacao bean drying system. Parts are shipping from Seattle. I hope to be installing this within the month. Pictures to follow. Thanks to John Rogers, Dr.TLUD, Hugh McLaughlin and Doug Clayton for all the inspiration and advice.

Josh Kearns
Aqueous Solutions
http://www.aqsolutions.org

Contamination of drinking water sources by synthetic organic compounds (SOCs – e.g. pesticides, pharmaceuticals, fuel compounds) is a growing worldwide problem. Many of these chemicals bio-accumulate in the human body and cause cancer, birth defects and diseases of the reproductive system, and disrupt endocrine and neurological systems. However, few low-cost, sustainable and appropriate treatment technologies are available to rural and developing communities for SOC removal. Moreover, SOCs are rarely or not-at-all addressed in the majority of safe drinking water programs implemented by major international development NGOs and government agencies, university research programs, philanthropic organizations, non-profits, faith-based charities, etc.