The current solutions for climate change can be roughly divided into:
Renewable energy technologies
Moving to less-polluting energy
Bio-Energy Carbon Capture and Sequestration
Removing carbon from the atmosphere
Renewable energy technologies
Most of the world’s efforts and resources to fight climate change over the last few decades were focused on renewable energy solutions.
And while the energy sector is a major contributor, it is not the only one. We refer to hard-to-abate sectors in which we simply don’t have a solution yet like Aviation, shipping, cement production, steel production, agriculture fertilization and more.
And renewable energy is limited in space and time because of availability and our limited capacity to store and transfer it.
BECCS stands for Bio-Energy Carbon Capture and Sequestration. Usually this refers to capturing CO2 using plants growth for energy generation (through chemical processes of the plants).
The Chinese government had attempted to plant Billions of trees in 1978, and created a plane called "the great green wall", in order to perform natural carbon capture and sequestration.
The trial failed.
Both solution families hold a great potential to fight climate change. But, plants are generally limited by available fertile land and are prone to succumb to pathogens, fires and droughts. This is in direct competition to increasing food supply needs.
These facts have brought the world’s leaders to the conclusion that the only viable solution is to also capture the carbon directly from the sky.
The only way to stop global warming is by capturing Carbon directly from the air.
Who emits this Carbon?
According to the US EPA, emissions by sector include:
The sad truth:
Even if we’ll reach full possible assimilation of renewable energy and bio-energy solutions, we can solve at best ~50% of the problem (leaving the “second half” still the most urgent problem).
There are currently irreplaceable sectors that will continue to pollute Carbon and as for now can’t be replaced by renewable energy technologies.
It has become clear that moving to less-polluting technology is crucial, yet insufficient. Current emissions numbers are simply too high.
Direct Air Carbon Capture and Sequestration
Of the different solutions to the climate crisis, Direct Air Capture is the simplest to understand – there is pollution in the air around us, so if we could catch it back, we could reverse the harm.
The main challenge in DACCS was how to separate and capture carbon molecules from the air out of many other types of molecules which are rather similar to one another.
The available techniques include the use of chemical materials that react with CO2.
DACCS is the only relevant solution for the “second half” of the problem. It’s the simplest to track and it has the potential to turn the clock back.
Our older sisters, the pioneers of the DACCS domain have already been trying to capture Carbon over the past 10-15 years.