The Biochar Economy

The Biochar Economy offers a sustainable alternative to economic systems that fail to sufficiently take into account care for the environment and concerns for global warming.

Biochar is one of the products of pyrolysis, an oxygen-starved method of heating up biomass to (also) produce renewable energy.

The Australian Government plans to award carbon credits for the application of biochar to soil, for biochar's ability to abate greenhouse gases. As part of the Carbon Farming Initiative $AU2 million will be provided for a Biochar Capacity Building Program. This in addition to $AU1.4 million that is already being invested in the National Biochar Initiative as part of the Climate Change Research Program.

Carbon credits constitute just one way to support biochar. Ultimately, carbon credits are typically paid from profits on fossil fuel, which are scheduled to decrease over time. To develop more lasting support for biochar, alternatively policies should be considered.

The idea behind the "Biochar Economy" is to try to embed biochar production into as many processes as possible, as pictured on above image, from open source ecology.

In carbon-negative 'Biochar Economies', biochar is proposed to also act as a kind of local 'gold standard' for local currency supply. Biochar-based currency could strengthen local economies and shield them not only from the volatility of global currency fluctuations, but also from the danger of global warming causing the entire global financial system to collapse, as discussed back in 2007.

Biochar-based local currencies go well together with three types of local feebates: 

• Energy fees, imposed on polluting fuel and the equipment and appliances used to burn the fuel, to fund rebates on local clean energy programs.
• Fees on polluting cement, livestock products and nitrogen fertilizers, made payable in local currency, funding rebates on locally-produced biochar and olivine added to local soils.
• Local rates that incorporate feebates, i.e. higher fees the lower the soil's carbon content, with rebates for soils with the highest carbon content.

Since pyrolysis of surplus biomass can produce renewable energy, it can benefit from local energy feebates as pictured below. 

In addition, soil supplements that include biochar can benefit from feebates as pictured below. 

These policies will avoid emissions and effectively take greenhouse gases from the atmosphere. 

These policies will also create local employment and investment opportunities without having to borrow money elsewhere, and will increase local standards of living and health, as well as increase the quality and value of the land. 

All this can be achieved though mechanisms that work in parallel and are often complementary, e.g. pyrolysis of forest waste can stimulate forest growth, avoid termite infections and reduce the risk of wildfires; furthermore, when pyrolysis provides power that replaces the practice of burning firewood and fossil fuel to power lighting and cooking, this will also reduce the risk of lung infections.

To increase demand for the local currency, rebates on local clean energy programs and soil supplements could be paid out in local currency. Furthermore, a community can call for local rates and fees on products such as fuel, polluting cement, livestock products and nitrogen fertilizers to be paid in local currency.

Much crop is now used to grow feed for livestock ― less livestock could free up land that could be used to produce food & wood, and the associated organic waste. Furthermore, such feebates can avoid soil erosion and deforestation, and instead result in more vegetation, thus further increasing the amount of biomass available for pyrolysis.

Below are some further ways pyrolysis can be integrated in the local economy:

• Pyrolysis of biomass is an excellent way of handling organic waste, while producing useful products such as biochar, biooils and gases such as hydrogen. Biooil and hydrogen can be used to power aviation and shipping.  
• Bioasphalt^® is a type of asphalt made from bio-oil. According to its manufacturer, it can save energy and money, since it can be mixed and paved at lower temperatures than conventional asphalt. 
• Apart from burial of biochar to enhance soil fertility, biochar can also be used to manufacture a range of products, including vehicle bodies made of carbon fiber and capacitors. 
  
  A team at Stevens Institute of Technology has designed, fabricated, and tested a prototype supercapacitor electrode made from biochar. The team demonstrated biochar's feasibility as an alternative to activated carbon for supercapacitor electrodes. Currently, supercapacitors use activated carbon. The team estimates that biochar costs almost half as much as activated carbon, apart from being more sustainable. 
  
  Supercapacitors can be used to power electric buses. Ultracapacitor buses by Sinautecus have been operational in the Greater Shanghai area since August 2006, as mentioned under this post on electric bus systems.

More reading at:

Feebates

Biochar

Biomass

Vortex towers could vegetate deserts

Carbon-negative building

Towards a Sustainable Economy
Comprehensive Plan of Action

Carbon-negative technologies

The image below, adapted from Negative Emissions Technologies report by Duncan McLaren (version 2, 2011), pictures a number of carbon dioxide removal (CDR) methods. 

For further discussion of biomass use, see the post Biomass; for further discussion of policy issues, see The way back to 280 ppm and Towards a Sustainable Economy. 

Biomass

Traditionally, biomass has been used in four ways:

 1. For industrial purposes (shelter, building materials, furniture, utensils, etc)

 2. Burning (for domestic energy use such as heating, lighting and cooking, and for land clearance) 

 3. Conservation (left on land or added to soil as compost, to enrich soil and biodiversity, avoid erosion, etc.) 

 4. For food (including livestock feed, while using fertilizers and with waste dumped in landfills or sea)

In the light of rising costs of fossil fuel and climate change concerns, other uses are considered, specifically: 

 5. Low-footprint food (reduced meat and reduced use of chemical fertilizers, with waste processed)

 6. Commercial combustion in power plants, furnaces, kilns, ovens and internal combustion engines

 7. Burial 

 8. BECCS (Bio-Energy with Carbon Capture & Storage)

 9. Biochar (Pyrolysis resulting in biochar, syngas and bio-oils)

10. Biochar + BECCS (Biochar + Bio-Energy with Carbon Capture & Storage)

Table 1. Comparison of methods to process biomass (Energy and Carbon)

	Combustion	Burial	BECCS	Biochar	Biochar + BECCS
Energy - year 0	1.0	-0.1	0.8	0.5	0.5
Carbon - year 0	-0.1	1.0	0.8	0.5	0.9
Energy - out years				0.4	0.4
Carbon - out years				0.5	0.5
Total	0.9	0.9	1.6	1.9	2.3

Above table by Ron Larsen, from this message, shows five methods to process biomass, rated (with 1.0 being the highest score) for their ability to supply energy and for their ability to remove carbon from the atmosphere.  

Above table shows that each way to process biomass waste has advantages and disadvantages:

 6. Combustion may seem attractive for its supply of energy, while having negative impact due to emissions 

 7. Burial can minimize emissions, but it doesn't provide energy, in fact it costs energy

 8. BECCS can score high on immediate energy supply as well as on avoiding carbon emissions

 9. Biochar scores well regarding immediate energy supply and emissions, with additional future benefits

10. Biochar + BECCS has all the benefits of biochar, while also capturing and storing pyrolysis emissions

The table below also incorporates above-mentioned traditional use of biomass, while using a wider footprint, i.e. with scores not only reflecting the ability of the method to remove carbon from the atmosphere, but also looking at emissions other than carbon.

Table 2. Comparison of ten uses of biomass (Energy and Footprint)

	Energy - year 0	Footprint - year 0	Energy - out years	Footprint - out years	Total
Industrial	-0.1	0.1			0.0
Burning	1.0	-1.0			0.0
Conservation		-0.2			-0.2
Food		-0.3			-0.3
Low-footprint food					0.0
Combustion	1.0	-0.1			0.9
Burial	-0.1	1.0			0.9
BECCS	0.8	0.8			1.6
Biochar	0.5	0.5	0.4	0.5	1.9
Biochar +BECCS	0.5	0.9	0.4	0.5	2.3

Biochar gets its positive "out years" scores for increasing vegetation growth over time, as it improves soil's water and nutrients retention, while also reducing the need for chemical fertilizers. 

These qualities of biochar are also helpful in efforts to bring vegetation into the desert by means of desalinated water, as proposed by a number of scientists. A study by Leonard Ornstein, a cell biologist at the Mount Sinai School of Medicine, and climate modelers David Rind and Igor Aleinov of NASA's Goddard Institute for Space Studies, all based in New York City, concludes that it's worth while to do so.

They envision building desalination plants to pump seawater from oceans to inland desert areas using pumps, pipes, canals and aqueducts. The idea is that this would result in vegetation, with the tree cover also bringing more rain -- about 700 to 1200 millimeters per year -- and clouds, which would also help reflect sunlight back into space.

This would not only make these deserts more livable and productive, it would also cool areas, in some cases by up to 8°C .

Importantly, vegetation in the deserts could draw some 8 billion tons of carbon a year from the atmosphere -- nearly as much as people now emit by burning fossil fuels and forests. As forests matured, they could continue taking up this much carbon for decades.

The researchers estimate that building, running, and maintaining reverse-osmosis plants for desalination and the irrigation equipment will cost some $2 trillion per year.

Links
Forest a Desert, Cool the World - ScienceNow Daily News
Ornstein et al. 2009 in press - Goddard Institute for Space Studies
Animations of 10-year average precipitation anomalies - Goddard Institute for Space Studies
Irrigated afforestation of the Sahara and Australian Outback to end global warming - Springerlink
Sahara Forest Project
Green machine takes root in Jordan
Afforestation - bringing life into the desert - Sam Carana
Vortex Towers could vegetate deserts - Sam Carana
Biochar - Sam Carana