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The incorporation of biochar into soil has been investigated to reduce nitrous oxide emissions from ruminant urine patches. Biochar is a carbon-rich compound manufactured from the thermal decomposition of organic matter in oxygen-deprived conditions at relatively low temperatures.
A 2010 report estimated that sustainable use of biochar could reduce the global net emissions of carbon dioxide (CO 2), methane, and nitrous oxide by up to 1.8 billion tonnes carbon dioxide equivalent (CO 2 e) per year (compared to the about 50 billion tonnes emitted in 2021), without endangering food security, habitats, or soil conservation. [51]
Biochar carbon removal (also called pyrogenic carbon capture and storage) is a negative emissions technology.It involves the production of biochar through pyrolysis of residual biomass and the subsequent application of the biochar in soils or durable materials (e.g. cement, tar).
A University of Florida student urges building industry to adopt use of biochar as way to reduce CO2 emissions, increase sustainable construction. Paving the way: Biochar research could help UF ...
Nitrous oxide emissions, driven primarily by the agricultural use of synthetic fertilizers and manure, have increased globally by 40% since 1980, and are on pace to rise 30% over 2020 levels by ...
In the soil, the biochar carbon is unavailable for oxidation to CO 2 and consequential atmospheric release. However concerns have been raised about biochar potentially accelerating release of the carbon already present in the soil. [99] [needs update] Terra preta, an anthropogenic, high-carbon soil, is also being investigated as a sequestration ...
Agricultural emissions of nitrous oxide make up 6% of the United States' greenhouse gas emissions; they have increased in concentration by 30% since 1980. [76] While 6% may appear to be a small contribution, nitrous oxide is 300 times more effective at trapping heat per pound than carbon dioxide and has a residence time of around 120 years. [76]
[3] Greenhouse gas (GHG) emissions arise from feed production (e.g. chemical fertilizer production, deforestation for pasture and feed crops, cultivation of feed crops, feed transport and soil erosion), animal production (e.g. enteric fermentation and methane and nitrous oxide emissions from manure) and as a result of the transportation of ...