CCUS for the Pulp and Paper Industry Webinars – Session 2 Video 1, a presentation by Malcom Wilson
Brief overview of the storage of carbon dioxide in the form or carbon as well as carbon dioxide. Carbon dioxide can be captured more or less easily, albeit at a cost, from any process that releases carbon dioxide from the chemical processes underway. This includes fossil fuel and biomass combustion and cement production. Once captured, it must be transported to a storage location. Western Canada is a good place to store CO2. Many aspects of the nature of our geology make us a first-class storage location – much of Alberta, southern Saskatchewan and northeastern British Columbia, although central BC has some potential. A second way of very long term storage is the use of biochar (essentially pure carbon) mixed into soil. Mixed in the soil, literature suggests a half-life of at least 550 years. Depending on soil type, the biochar has numerous benefits to the soil. The porous nature of the biochar is a good substrate for beneficial micro-organisms in the soil, it holds water reducing the wilt index for plants, it can help reduce N2O emissions, store nitrogen (reducing fertilizer requirements), extract contaminants and reduce soil density in more clayey soils. As a secondary area of interest, biochar mixed with compost is a good way to move the fertilizer to the soil. Biochar can also be used as animal feed to improve growth and reduce methane emissions.
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