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Gardening and Farming with Biochar Prevents Toxic Emissions from Soil – Green Building Elements

Biochar

For farmers, gardeners and those who are raising animals, information from a recent study about biochar may be of benefit when it comes to managing carbon footprints and greenhouse gases. Intensely grazed pastures held responsible for greenhouse gases by nitrous oxide emissions produced from animal excrement can be better managed through the use of biochar.

You can read more on healing toxic soil with biochar over on our sister site, Green Building Elements.

Photo Source: Lakshmi Mushunuri

3 comments
  1. Erich J. Knight

    All political persuasions agree, building soil carbon is GOOD.
    To Hard bitten Farmers, wary of carbon regulations that only increase their costs, Building soil carbon is a savory bone, to do well while doing good.

    Biochar provides the tool powerful enough to cover Farming’s carbon foot print while lowering cost simultaneously.

    Agriculture allowed our cultural accent and Agriculture will now prevent our descent.
    Wise Land management; Organic farming and afforestation can build back our soil carbon,
    Biochar allows the soil food web to build much more recalcitrant organic carbon, ( living biomass & Glomalins) in addition to the carbon in the biochar.

    Biochar, the modern version of an ancient Amazonian agricultural practice called Terra Preta (black earth, TP), is gaining widespread credibility as a way to address world hunger, climate change, rural poverty, deforestation, and energy shortages… SIMULTANEOUSLY!

    Every 1 ton of Biomass yields 1/3 ton Charcoal for soil Sequestration (= to 1 Ton CO2e) + Bio-Gas & Bio-oil fuels = to 1MWh exported electricity, so is a totally virtuous, carbon negative energy cycle.

    Biochar viewed as soil Infrastructure; The old saw;
    “Feed the Soil Not the Plants” becomes;
    “Feed, Cloth and House the Soil, utilities included !”.
    Free Carbon Condominiums with carboxyl group fats in the pantry and hydroxyl alcohol in the mini bar.
    Build it and the Wee-Beasties will come.
    Microbes like to sit down when they eat.
    By setting this table we expand husbandry to whole new orders & Kingdoms of life.

    This is what I try to get across to Farmers, as to how I feel about the act of returning carbon to the soil. An act of penitence and thankfulness for the civilization we have created. Farmers are the Soil Sink Bankers, once carbon has a price, they will be laughing all the way to it.
    Unlike CCS which only reduces emissions, biochar systems draw down CO2 every energy cycle, closing a circle back to support the soil food web. The photosynthetic “capture” collectors are up and running, the “storage” sink is in operation just under our feet. Pyrolysis conversion plants are the only infrastructure we need to build out.

    Another significant aspect of low cost Biomass cook stoves that produce char is removal of BC aerosols and no respiratory disease emissions. At Scale, replacing “Three Stone” stoves the health benefits would equal eradication of Malaria
    The Congo Basin Forest Fund (CBFF).recently funded The Biochar Fund $300K for these systems citing these priorities;
    (1) Hunger amongst the world’s poorest people, the subsistence farmers of Sub-Saharan Africa,
    (2) Deforestation resulting from a reliance on slash-and-burn farming,
    (3) Energy poverty and a lack of access to clean, renewable energy, and
    (4) Climate change.

    The Biochar Fund :
    Exceptional results from biochar experiment in Cameroon

    The broad smiles of 1500 subsistence farmers say it all ( that , and the size of the Biochar corn root balls )

    Recent NATURE STUDY;
    Sustainable bio char to mitigate global climate change

    Not talked about in this otherwise comprehensive study are the climate and whole ecological implications of new , higher value, applications of chars.

    First,
    the in situ remediation of a vast variety of toxic agents in soils and sediments.
    Biochar Sorption of Contaminants;

    Dr. Lima’s work; Specialized Characterization Methods for Biochar
    And at USDA;
    The Ultimate Trash To Treasure: *ARS Research Turns Poultry Waste into Toxin-grabbing Char

    Second,
    The uses as a feed ration for livestock to reduce GHG emissions and increase disease resistance.

    Third,
    Recent work by C. Steiner, at U of GA, showing a 52% reduction of NH3 loss when char is used as a composting accelerator. This will have profound value added consequences for the commercial composting industry by reduction of their GHG emissions and the sale of compost as a nitrogen fertilizer.

    Since we have filled the air , filling the seas to full, Soil is the Only Beneficial place left.
    Carbon to the Soil, the only ubiquitous and economic place to put it.

    Thanks for your efforts.
    Erich

    Erich J. Knight
    Chairman; Markets and Business Committee
    2010 US BiocharConference, at Iowa State University

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