62 results about "Negative carbon dioxide emission" patented technology

A negative carbon dioxide emission or negative emission or a process that is carbon negative gives a permanent removal of the greenhouse gas carbon dioxide from Earth's atmosphere. It is considered the direct opposite of carbon dioxide emission, hence its name. It is the result of carbon dioxide removal technologies, such as bio-energy with carbon capture and storage, biochar, direct air capture or enhanced weathering. Negative emissions is different from reducing emissions, as the former produces an outlet of carbon dioxide from Earth's atmosphere, whereas the latter decreases the inlet of carbon dioxide to the atmosphere. Both have the same momentary net effect, but for achieving carbon dioxide concentration levels below present levels, such as 350 ppm, negative emissions are critical. Also for meeting higher concentration levels, negative emissions are increasingly considered to be crucial as they provide the only possibility to fill the gap between needed reductions to meet mitigation targets and global emission trends.